Description:FIELD OF THE INVENTION

[0001] The present invention relates to a wastewater filtering and recycling system for laundry washers that is capable of filtering and recycling wastewater generated during laundry washing by processing large volumes of water in an efficient manner and reducing the overall requirement for fresh water.

BACKGROUND OF THE INVENTION

[0002] Water is an essential resource in day-to-day life and is used extensively in households, industries, and commercial spaces. Among domestic uses, laundry washing consumes a significant quantity of water. Large volumes of wastewater are discharged from laundry machines on a daily basis, containing lint, fibres, detergents, chemicals, and suspended solids. This wastewater, if not properly treated, directly contributes to environmental pollution and increased water scarcity problems.

[0003] Traditional wastewater management methods for laundry washing mainly rely on direct drainage into municipal sewage systems without any intermediate treatment. In certain cases, simple sedimentation tanks or basic filters are used to separate large particles or lint. These approaches, however, do not effectively handle microfibers, detergent residues, or chemical pollutants. As a result, the water discharged remains contaminated and unsuitable for reuse in any domestic or industrial application.

[0004] The existing methods further face drawbacks such as limited filtration capacity, high manual maintenance requirements, and inability to adapt to varying water quality conditions. They often lack automated monitoring systems, making it difficult to assess pollution levels or optimize treatment. These limitations result in inefficient cleaning, wastage of reusable water, and dependency on fresh water supplies for laundry purposes, which ultimately increases both environmental and economic burdens.

[0005] US20220340466A1 discloses about apparatus and systems for laundry wastewater treatment are provided. Generally, systems include one or more grinder pumps for receiving raw wastewater from laundry operations, a lint remover in fluid communication with the grinder pumps, a sediment filter in fluid communication with the lint remover, an ozone treatment chamber in fluid communication with the sediment filter, and a carbon filter. Methods can provide for continuous treatment of laundry wastewater that can be reused in laundry operations, or passed to a wastewater stream (such as sewage).

[0006] WO2016095232A1 discloses about a water treatment system and a vortex sedimentation device therefor, the vortex sedimentation device (200) comprising a housing and a vortex generator arranged at an inner bottom portion of the housing, the vortex generator producing a vortex at the bottom portion of the housing, heavy solid particulate impurities in the water gathering towards the center of the bottom portion in a spiral shape under the effect of the vortex. The vortex sedimentation device (200) uses a driving unit to drive rotary blades to rotate and produce the vortex, so that the heavy solid particulate impurities in the water gather towards the center of the bottom portion in a spiral shape under the effect of the vortex, and the impurities are discharged via a waste pipe. Compared to filter core-type filtration devices in the prior art, the present invention does not require frequent replacement of a cleaning filter core and is simple to operate. The problem that remaining impurities breed bacteria at a filter core and thereby pollute water to be purified does not occur, said problem being caused by the filter core not being replaced in a timely manner.

[0007] Conventionally, many devices are available for filtering and recycling water. However, the cited invention shows certain limitation where system as partial treatment of wastewater, inability to effectively remove microfibers and chemical residues, and reliance on frequent maintenance. These systems often lack adaptability to varying wastewater conditions, resulting in incomplete purification, reduced reusability, and continued dependence on fresh water supplies.

[0008] In order to overcome the aforementioned drawbacks, there exists a need in the art to develop a system that requires to provide efficient wastewater treatment with improved reliability and adaptability. The system should ensure thorough removal of pollutants, minimize maintenance requirements, support reuse of treated water, and reduce dependency on fresh water resources for sustainable laundry operations.

OBJECTS OF THE INVENTION

[0009] The principal object of the present invention is to overcome the disadvantages of the prior art.

[0010] An object of the present invention is to develop a system that is capable of filtering and recycling wastewater generated during laundry washing in an efficient manner and reduce the overall requirement for fresh water and promoting sustainable water management.

[0011] Another object of the present invention is to develop a system that is capable of achieving effective removal of contaminants present in laundry wastewater, ensuring that the processed water is of a quality suitable for reuse in washing operations.

[0012] Another object of the present invention is to develop a system that is capable of optimizing water consumption in laundry applications by enabling repeated cycles of water reuse without compromising washing efficiency, thus providing reliable purification outcomes.

[0013] Yet another object of the present invention is to develop a system that is capable of ensuring consistent treatment performance under varying water quality conditions, thereby improving efficiency and reducing environmental pollution

[0014] The foregoing and other objects, features, and advantages of the present invention will become readily apparent upon further review of the following detailed description of the preferred embodiment as illustrated in the accompanying drawings.

SUMMARY OF THE INVENTION

[0015] The present invention relates to a wastewater filtering and recycling system for laundry washers that is capable of ensuring effective removal of impurities present in laundry wastewater and ensuring that the processed water achieves a level of cleanliness that makes it suitable for safe reuse, thus promoting sustainable water management.

[0016] According to an aspect of the present invention, a wastewater filtering and recycling system for laundry washers, comprising a vortex sedimentation tank configured with an inlet pipe directly connected to a washer drain, the inlet pipe is equipped with a sensor suite operatively for measuring pH levels, turbidity, pollution concentration, dissolved oxygen, and monitor quality of wastewater being received from the washer drain in real time, a circular coarse strainer integrated within the inlet pipe to capture larger debris from wastewater that enters tangentially in the tank to generate a vortex motion for centrifugal separation of heavier segments into a conical base of the tank, arranged with an underflow outlet for sediment discharge and an overflow outlet for clarified water, a lint and fiber separation chamber positioned adjacent to the vortex sedimentation tank, configured to receive the clarified water from the tank, the chamber including a rotary drum filter partially submerged in the water and a vacuum unit for capturing lint and fibers over meshed sections of the rotary drum filter.

[0017] According to another aspect of the present invention, the system further includes a centrifugal microfiber extractor connected adjacently with the chamber, configured to collect and rotate the partially filtered water to separate microfibers and suspended solids through centrifugal force, a foam reduction container arranged alongside the microfiber extractor to receive partly filtered water, the container including a cuboidal framework with a horizontal rotating paddle 109 embedded with upward facing air jets to destabilize and collapse foam bubbles, a foam level sensor for monitoring foam buildup, and a dispensing means for introducing hydrogen peroxide for de-colorization, a filter cartridge compartment arranged adjacent to the foam reduction container, configured to store and deploy filter cartridges for sequential filtration to transfer the filtered water into a final storage basin linked with the compartment for final quality check, including detection of foul odor by an integrated olfactory sensor a dispensing module integrated within the basin for introducing an aromatic liquid in the filtered water.

[0018] While the invention has been described and shown with particular reference to the preferred embodiment, it will be apparent that variations might be possible that would fall within the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:
Figure 1 illustrates a perspective view of a wastewater filtering and recycling system for laundry washers.

DETAILED DESCRIPTION OF THE INVENTION

[0020] The following description includes the preferred best mode of one embodiment of the present invention. It will be clear from this description of the invention that the invention is not limited to these illustrated embodiments but that the invention also includes a variety of modifications and embodiments thereto. Therefore, the present description should be seen as illustrative and not limiting. While the invention is susceptible to various modifications and alternative constructions, it should be understood, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention as defined in the claims.

[0021] In any embodiment described herein, the open-ended terms "comprising," "comprises,” and the like (which are synonymous with "including," "having” and "characterized by") may be replaced by the respective partially closed phrases "consisting essentially of," consists essentially of," and the like or the respective closed phrases "consisting of," "consists of, the like.

[0022] As used herein, the singular forms “a,” “an,” and “the” designate both the singular and the plural, unless expressly stated to designate the singular only.

[0023] The present invention relates to a wastewater filtering and recycling system for laundry washers that is capable of allowing repeated reuse of treated laundry water without affecting cleaning efficiency and ensuring effective removal of impurities, thus improving reliability of wastewater treatment.

[0024] Referring to Figure 1, a perspective view of a wastewater filtering and recycling system for laundry washers is illustrated, comprising of a vortex sedimentation tank 101 configured with an inlet pipe 102, a circular coarse strainer 103 integrated within the inlet pipe 102, a lint and fiber separation chamber 104 positioned adjacent to the vortex sedimentation tank 101, a rotary drum filter 105 partially submerged in the water and a vacuum unit 106, a centrifugal microfiber extractor 107 connected adjacently with the chamber, a foam reduction container 108 arranged alongside the microfiber extractor 107, a horizontal rotating paddle 109 embedded with upward facing air jets, a dispensing means 110 includes a vessel 110a, and an electronic sprayer 110b, a filter cartridge compartment 111 arranged adjacent to the foam reduction container 108 includes a hollow channel 111a, a final storage basin 112 linked with the compartment, a plurality of extendable arms 111b arranged on an inner wall of the compartment, each arm supporting a filter cartridges 111c, a series of equidistantly spaced slits 111d along walls of the hollow channel 111a, dispensing module 113 includes a receptacle 113a storing neutralizing liquid, equipped with an electronic spout 113b.

[0025] The system disclosed herein comprises of the vortex sedimentation tank 101 that is directly connected to a washer drain via the inlet pipe 102. The inlet pipes 102 mentioned herein is designed and positioned at a tangential angle relative to the cylindrical wall of the sedimentation tank 101. When wastewater is discharged from the washer drain, which enters through this pipe 102 and is directed along the inner circumference of the tank 101 rather than at its center. This orientation transforms the linear incoming flow into a swirling circular motion, initiating vortex formation. By controlling entry velocity and angle, the tangential inlet reduces turbulence, maintains laminar spiral flow, and increases centrifugal action.

[0026] The inlet pipes 102 is provided with the circular coarse strainer 103 for capturing larger debris. The circular coarse strainer 103 is positioned inside the inlet pipe 102 before water enters the tank 101 chamber. The strainer 103 is designed to intercept large debris such as hair, paper residues, or fragments of fabric that obstruct the sedimentation process. The strainer 103 uses a perforated or meshed circular structure that allows water to pass through while holding back larger solids. This captured debris is periodically flushed out or removed for maintenance. By preventing bulky contaminants from entering the sedimentation tank 101, the coarse strainer 103 protects downstream components from clogging, reduces mechanical strain, and enhances the efficiency of vortex separation.

[0027] In an embodiment of the present invention, the strainer 103 mentioned herein comprises a stainless steel or polymeric perforated disc having uniformly spaced apertures sized between 0.5 mm and 2 mm, configured to intercept hair, fabric threads, and paper residues while permitting water flow with minimal pressure loss. The strainer 103 is mounted in a removable cartridge frame to allow easy flushing or replacement during maintenance cycles. By eliminating bulky debris before water enters the sedimentation tank 101, the strainer 103 prevents clogging, ensures stable vortex flow.

[0028] The vortex sedimentation tank 101 mentioned herein is a cylindrical structure designed to induce centrifugal sediment separation. Wastewater enters tangentially through the inlet pipe 102, generating a spiraling vortex flow. This motion forces heavier suspended particles outward and downward toward the conical base of the tank 101. Lighter clarified water remains in the central region and rises toward the overflow outlet. The design maximizes gravitational and centrifugal forces for sediment separation without requiring moving parts. By combining coarse straining with vortex-induced sedimentation, the tank 101 ensures initial pollutant load reduction, making downstream filtration more effective and extending the lifespan of finer treatment components.

[0029] The inlet pipes 102 is equipped with a sensor suite comprising a pH sensor, a turbidity sensor, a dissolved oxygen sensor, an electrochemical sensor, and a pollution concentration sensor. The sensor suite is operatively linked to a microcontroller for real-time monitoring of wastewater quality parameters.

[0030] The pH sensor mentioned herein operates by measuring the hydrogen ion activity in the wastewater using an electrochemical probe, basically a glass electrode paired with a reference electrode. As the hydrogen ion concentration varies, the potential difference across the membrane changes, which is then converted into a pH value. In laundry wastewater, this allows detection of alkaline detergents, acidic residues, or neutralized states. Real-time pH measurement enables the microcontroller to determine chemical balance and trigger corrective treatment, such as dosing neutralizing agents. Continuous pH monitoring ensures compatibility with downstream filters and prevents damage to sensitive treatment components.

[0031] The turbidity sensor functions by projecting a beam of light, commonly infrared, through the wastewater and measuring the intensity of scattered light at a defined angle using a photodetector. Suspended solids and fine particles increase scattering and reduce light transmission, which correlates to turbidity levels. This measurement allows to quantify water clarity and particulate loading. In real time, the microcontroller processes turbidity data to regulate vortex sedimentation efficiency and determine. Consistent monitoring prevents clogging of fine filters and ensures treated water meets clarity standards for recycling.

[0032] The dissolved oxygen (DO) sensor mentioned herein operates using an electrochemical Clark cell probe to measure oxygen concentration dissolved in the wastewater. Oxygen from the water diffuses through a selective membrane and is reduced at the cathode, generating an electrical current proportional to the oxygen levels. Real-time monitoring of DO enables assessment of biodegradability, potential microbial growth, and treatment efficiency in laundry wastewater. The microcontroller processes the DO data to regulate aeration, oxidation, or chemical dosing, maintaining optimal conditions for subsequent biological or chemical purification stages.

[0033] The electrochemical sensor detects specific ionic or chemical contaminants in wastewater, such as chlorine, detergents, or heavy metals, through a working electrode, reference electrode, and electrolyte interface. When the target analytic interacts at the electrode surface, a measurable current or voltage shift is generated, proportional to its concentration. This sensor provides precise data on chemical pollution levels beyond turbidity or ph. Integrated with the microcontroller; the readings allow activation of neutralization, adsorption, or advanced oxidation processes. Continuous electrochemical monitoring ensures that harmful residues are identified and controlled before treated water is discharged or recycled.

[0034] The pollution concentration sensor mentioned herein employs multispectral optical detection, conductivity measurement, or chemical sensing arrays to quantify the overall pollutant load in wastewater. The sensor provides an aggregate index by analyzing multiple factors, such as organic matter, detergent concentration, and dissolved impurities. Using calibration curves, the sensor converts raw signals into pollution concentration values expressed in ppm or COD-equivalent units. This parameter gives a real-time estimate of water contamination severity. The microcontroller uses this data to optimize treatment intensity, adjust filtration cycles, and ensure that discharge or recycled water complies with environmental standards.

[0035] The inlet pipes 102 is further configured with a tangential inlet arrangement, such that wastewater enters the tank 101 tangentially, generating a vortex motion for centrifugal separation of heavier particles into a conical base of the tank 101. This arrangement converts the linear flow from the washer drain into angular motion, ensuring uniform distribution of velocity around the tank 101. The tangential configuration minimizes turbulence while enhancing rotational flow stability. By inducing a circular trajectory upon entry, the inlet pipes 102 creates the conditions necessary for a vortex. This engineered hydraulic orientation provides a controlled environment for centrifugal separation, allowing heavier particulates to migrate outward efficiently while maintaining continuous wastewater throughput.

[0036] When wastewater enters tangentially through the inlet pipe 102, the sudden angular deflection initiates a swirling flow inside the sedimentation tank 101. This hydrodynamic vortex is characterized by high rotational velocity near the wall and relatively lower velocity at the core. The gradient in velocity generates centrifugal force, acting radially outward on suspended solids. Heavier particles are pushed against the tank 101 walls, while lighter water remains concentrated near the center. This flow field enables stratification of suspended matter, with the vortex motion acting as the driving means for subsequent gravitational settling into the conical base of the tank 101

[0037] The lower portion of the sedimentation tank 101 is shaped as a conical base that naturally channel 111a is the heavier particles and sludge separated by vortex motion toward its tip. At the narrow end of the conical base, an underflow outlet is positioned for controlled sediment discharge. The geometry of the cone directs heavier solids, displaced by centrifugal action, toward the apex. As particles slide down the inclined surfaces under gravity, they accumulate near the underflow outlet. This design prevents resuspension of settled solids into the rising clarified water. The overflow outlet is carefully dimensioned to maintain the hydraulic balance of the tank 101, ensuring continuous separation while preventing re-entrainment of settled solids. The positioning above the vortex zone ensures that only clarified water flows out, leaving behind the denser sludge at the conical base.

[0038] The centrifugal separation relies on the combined effect of tangential inflow, vortex formation, and conical geometry. As wastewater spirals downward, centrifugal force drives denser particles toward the periphery, where they migrate to the sloped cone walls. Gravity assists in directing these solids into the conical apex. Meanwhile, clarified water, being lighter, rises centrally and exits through the overflow outlet. The microcontroller regulates discharge cycles based on turbidity data, ensuring accumulated sludge is purged without disturbing separation. This enables effective primary treatment of laundry wastewater without moving parts, reducing maintenance while improving sedimentation efficiency.

[0039] The conical base includes the underflow outlet fitted with an electronic valve that is periodically actuated by the microcontroller, based on sediment accumulation detected by the sensor suite. The electronic valve mentioned herein consists of a valve housing, a movable gate or diaphragm, and an actuator usually a solenoid or motorized drive, which is electrically connected to the microcontroller. During operation, the sensor suite monitors sediment buildup at the conical base and transmits data to the microcontroller. When the accumulation reaches a preset threshold, the microcontroller sends a signal to the actuator, causing the gate to shift and open the outlet. Sediment-laden water is discharged until the programmed cycle ends, after which the actuator re-seals the outlet.

[0040] The clarified water is directed into the lint and fiber separation chamber 104 positioned adjacent to the vortex sedimentation tank 101. The chamber houses a rotary drum filter 105 that is partially submerged in the clarified water. The rotary drum filter 105 includes a meshed section onto which lint and fibers are deposited.

[0041] The lint and fiber separation chamber 104 serves as a dedicated housing unit designed to receive clarified water from the vortex sedimentation tank 101. The chamber is constructed with an inlet port, chamber body, and outlet channel 111a. The chamber provides a controlled flow environment where clarified water passes through without turbulence, ensuring proper deposition of lint and fibers on the rotary drum filter 105. Its design maintains optimal water levels to keep the drum partially submerged, enabling continuous filtration. The chamber also allows for collection and removal of separated lint, ensuring downstream filtration units are protected from fiber clogging and excessive load.

[0042] The rotary drum filter 105 functions as a rotating cylindrical filtration medium, partially immersed in clarified water. The filter is fabricated with fine mesh sections that capture suspended lint and fibers as water passes through the drum wall. Driven by a motor, the drum rotates slowly, exposing the mesh alternately to water for collection and to air for cleaning or vacuum suction. Continuous rotation prevents excessive clogging, while maintaining filtration efficiency. Lint accumulation on the mesh surface forms a filter cake that enhances particle capture. The drum’s design enables continuous operation, ensuring uninterrupted flow of clarified water toward downstream treatment units.

[0043] The meshed section of the rotary drum filter 105 is a fine-perforated or woven filtration surface specifically engineered to trap lint, threads, and fibers present in the clarified water. The section pore size is optimized to allow water molecules and smaller dissolved substances to pass through, while intercepting fibrous contaminants. The mesh is reinforced on the drum surface to withstand continuous water flow and rotational stress. As the drum rotates, lint accumulates on the mesh surface, forming a removable layer. This ensures high surface area exposure for maximum capture efficiency, reducing the risk of clogging and protecting subsequent filtration components.

[0044] A vacuum unit 106 is provided for capturing and removing the accumulated lint cake without interrupting the filtration process. The vacuum unit 106 operates as a suction-based cleaning for removing lint cake from the rotary drum filter 105 without halting filtration. The vacuum unit 106 consists of a suction nozzle, vacuum pump, and discharge conduit. As the drum rotates, the lint-covered mesh surface passes under the suction nozzle, which applies negative pressure generated by the pump. This pressure detaches the accumulated lint fibers from the mesh and conveys them through the discharge conduit into a collection chamber or waste container. The continuous suction process ensures that the mesh remains unclogged, maintains filtration efficiency, and allows uninterrupted water flow through the separation chamber 104.

[0045] The rotary drum filter 105 in the lint and fibre separation chamber 104 includes a vacuum module for removal of accumulated lint cake without interrupting filtration. The vacuum module mentioned herein comprises a suction nozzle, vacuum pump, and discharge conduit. As the partially submerged drum rotates, lint and fibers accumulate on the meshed surface. The suction nozzle applies negative pressure generated by the vacuum pump directly onto the mesh, detaching the collected lint cake. This process operates continuously without stopping the drum, ensuring uninterrupted filtration.

[0046] Additionally, the rotary drum filter 105 is integrated with a flow rate sensor, which monitors the volume of water being processed. The flow rate sensor mentioned herein works on the ultrasonic principle. The sensor consists of a pair of transducers mounted across the flow path that alternately transmit and receive ultrasonic signals through the moving water. The sensor calculates the time difference between upstream and downstream signal transmission, which directly corresponds to the velocity of water flow. By multiplying this velocity with the known cross-sectional area of the chamber, the volumetric flow rate is determined. The sensor continuously transmits this data to the microcontroller, enabling precise monitoring of water throughput and assisting in regulating filtration efficiency.

[0047] From the lint and fiber separation chamber 104, the partially filtered water is conveyed into the centrifugal microfiber extractor 107. The microfiber extractor 107 is constructed as a cylindrical drum arranged to rotate at variable speeds. The centrifugal microfiber extractor 107 functions as a separation unit designed to remove suspended microfibers and fine particles that escape initial filtration. It receives partially filtered water from the lint and fiber chamber and directs it into a rotating cylindrical drum. As the drum spins, centrifugal force acts on the water, forcing denser microfibers and solids outward toward the drum wall, while clarified water remains closer to the center. The separated contaminants are collected at peripheral discharge outlets, while the clarified stream flows toward the next treatment stage. This process significantly reduces microfiber load, ensuring higher downstream treatment efficiency.

[0048] The cylindrical drum serves as the primary rotating body of the microfiber extractor 107. The drum is mounted on a central shaft driven by a motor, allowing variable rotational speeds controlled by the microcontroller. During operation, incoming water enters the drum and is subjected to centrifugal force generated by high-speed rotation. Microfibers and suspended solids, being denser than water, migrate radially outward to the drum wall, where they are trapped or diverted to a sludge outlet.

[0049] Simultaneously, clarified water moves inward and is discharged through a central outlet. The adjustable speed enables optimization of separation efficiency for varying wastewater conditions. The rotational speed is modulated by the microcontroller, to maximize the separation efficiency of microfibers and suspended solids from the wastewater. The centrifugal force generated within the extractor 107 ensures effective removal of fine pollutants that escape the previous filtration stages.

[0050] The system further comprises a foam reduction container 108, which is positioned alongside the microfiber extractor 107. The foam reduction container 108 includes a cuboidal framework and is fitted with the horizontal rotating paddle 109 that is embedded with upward-facing air jets.

[0051] The foam reduction container 108 operates as a specialized treatment chamber designed to break down excessive foam generated in wastewater due to detergents and surfactants. Constructed in a cuboidal framework, it provides a stable enclosure where partially filtered water enters and maintains a controlled liquid level. The shape allows uniform distribution of turbulence created by the rotating paddle 109 and air jets, ensuring foam bubbles are destabilized efficiently. The container is also integrated with an outlet to discharge defamed water to the next stage. Its structured design ensures long residence time for effective foam collapse while preventing overflow or reformation.

[0052] The rotating paddle 109 is activated upon detection of foam levels exceeding a predefined threshold by a foam level sensor. The foam level sensor is mounted inside the foam reduction container 108 to continuously monitor the height of foam buildup. It operates using an ultrasonic detection principle, where high-frequency sound pulses are emitted toward the foam surface. The pulses reflect back to the sensor, and the time delay between emission and reception is measured to calculate the foam height. This real-time data is transmitted to the microcontroller, which compares the foam level with predefined thresholds. When excessive foam is detected, the microcontroller activates the rotating paddle 109 and upward-facing air jets, ensuring timely foam collapse and efficient operation.

[0053] The air jets are controlled such that their intensity is modulated to minimize energy consumption while efficiently destabilizing and collapsing foam bubbles. The upward-facing air jets embedded in the horizontal paddle 109 are designed to inject controlled streams of air into the foam layer on the water surface. Each jet is connected to an electronically controlled air supply regulated by the microcontroller. Based on real-time foam height data from the foam level sensor, the microcontroller modulates air pressure and pulse frequency to deliver only the required airflow for effective foam destabilization. This targeted injection collapses foam bubbles by breaking the liquid films while minimizing energy consumption.

[0054] The container is also equipped with dispensing means 110 consisting of the vessel 110a storing hydrogen peroxide and an electronic sprayer 110b. The dispensing means 110 introduces a calibrated quantity of hydrogen peroxide into the wastewater in response to detected color levels obtained from the sensor suite, thereby ensuring de-colorization without excessive chemical consumption.

[0055] Following foam reduction and de-colorization, the wastewater passes into a filter cartridge compartment 111, which is arranged adjacent to the foam reduction container 108. The compartment is structured with a hollow channel 111a for receiving processed water. The electronic sprayer 110b functions as a precision delivery system that introduces a measured quantity of hydrogen peroxide into the foam reduction container 108. It consists of a pump, nozzle, and electronic control interface connected to the microcontroller. Upon receiving a signal indicating high color levels from the sensor suite, the microcontroller activates the sprayer 110b to release a calibrated chemical dose. The nozzle atomizes the hydrogen peroxide to ensure uniform distribution in the wastewater, enhancing oxidation of color-causing compounds. Controlled operation prevents excessive chemical usage, maintains water safety, and integrates seamlessly with the automated foam reduction and water treatment process.

[0056] Along the inner walls of the compartment, a plurality of extendable arms 111b is provided, each arm supporting a different type of filter cartridge, including a fine mesh filter, an activated carbon filter, a Nano-membrane filter, and a UV (ultraviolet) filter. The extendable arms 111b mentioned herein is powered by a pneumatic unit that embodies an air compressor, air cylinder, air valves, and piston which work in collaboration to perform the extension and retraction of the arms 111b. The arms 111b comprise a nested tube arrangement that contains multiple hollow tubes connected concentrically.

[0057] The air cylinder is attached to the bottom of the nested tube arrangement and further consists of an air piston attached to the topmost part of the nested tube arrangement from the inside. The air cylinder is integrated with one inlet and one outlet valve that is connected to an air compressor. The air compressor draws air from the surroundings and compresses it to form pressurized air which enters the inlet valve and creates a force that pushes the piston in the forward direction. As the piston moves in the forward direction, it leads to the sequential opening of the concentrically connected tubes from the top toward the bottom. This leads to the extension of the arms 111b for supporting the filter cartridge.

[0058] The fine mesh filter operates as a physical barrier to remove suspended solids, fine particles, and residual fibers from the partially treated water. It is constructed from corrosion-resistant materials such as stainless steel or polymer mesh, with pore sizes optimized to capture particles while maintaining water flow. Water passes through the mesh, and trapped solids accumulate on the surface, forming a filter cake that enhances further particle retention. Periodic cleaning or replacement prevents clogging. By removing remaining suspended matter, the fine mesh filter ensures downstream filters operate efficiently, protecting more sensitive membranes and chemical or UV treatment stages from fouling.

[0059] The activated carbon filter functions as an adsorptive purification stage that removes dissolved organic compounds, chlorine, and other contaminants affecting water taste, odor, and color. Water flows through granular or block-structured activated carbon, where pollutants adhere to the highly porous surface through physical adsorption and chemical interactions. The filter reduces residual detergents, pigments, and odorous molecules that were not eliminated by previous mechanical filtration. Real-time sensor data from the system ensures that flow rate and contact time are sufficient for effective adsorption. This stage enhances water quality, protects downstream Nano-membranes and UV treatment, and contributes to safe and reusable water.

[0060] The Nano-membrane filter serves as an advanced filtration stage that removes sub-micron particles, microorganisms, and colloidal matter. Water is forced through a semi-permeable nanostructured membrane with pore sizes typically between 1–100 nanometers. Suspended solids, bacteria, and fine particulates are retained on the upstream side, while clarified water passes through. The microcontroller monitors flow and pressure differentials to prevent fouling or excessive backpressure. This high-precision separation ensures water meets stringent quality standards and protects downstream UV treatment from turbidity or microbial contamination. The Nano-membrane filter is critical for achieving near-complete removal of microscopic contaminants.

[0061] The UV filter acts as a disinfection stage to inactivate pathogenic microorganisms and bacteria remaining after prior filtration. Water passes through a chamber containing a UV-C lamp emitting radiation at 254 nm, which disrupts microbial DNA and RNA, preventing replication. The flow rate is regulated to ensure sufficient exposure time for complete disinfection. The system continuously monitors lamp intensity and water clarity, allowing the microcontroller to adjust operational parameters for optimal microbial inactivation. This stage provides chemical-free sterilization, ensuring the treated water is hygienically safe for reuse while maintaining its physical and chemical properties.

[0062] The hollow channel 111a includes series of equidistantly spaced slits 111d, each equipped with a spring-loaded flap designed to open selectively when the extendable arms 111b are actuated by the microcontroller. The hollow channel 111a functions as a conduit for directing partially treated water through the filter compartment. The channel 111a is constructed as a corrosion-resistant tubular or rectangular passage that ensures uniform flow distribution to the engaged filter cartridges 111c. The channel 111a is dimensioned to maintain optimal hydraulic pressure and prevent turbulence that could compromise filtration efficiency. Water enters the channel 111a from the upstream treatment stages and is guided sequentially through the activated filters. Its design allows integration with slits 111d and spring-loaded flaps, enabling selective routing of water through specific cartridges 111c while maintaining continuous flow, thereby supporting automated and adaptive filtration.

[0063] The series of equidistantly spaced slits 111d are openings along the hollow channel 111a wall, precisely positioned to align with each extendable filter arm. These slits 111d act as selective access points through which water can pass into a filter cartridge when the corresponding flap is opened. Their spacing ensures even distribution of water across all cartridges 111c, prevents bypassing, and avoids flow interference. The slits 111d are reinforced to maintain structural integrity under pressurized flow.

[0064] Each slit is covered by a spring-loaded flap that remains normally closed, preventing water from entering an unengaged cartridge. When the microcontroller actuates a specific extendable arm, the corresponding flap opens against spring tension, allowing water to flow through the selected filter. Upon deactivation, the spring automatically returns the flap to its closed position, sealing the slit and preventing backflow or cross-contamination. This enables automated, sequential filtration based on real-time sensor data, ensuring that only the necessary filters are engaged at any time. This arrangement permits sequential engagement of the required filter cartridges 111c based on the pollutant concentration detected by the sensor suite, thereby enabling tailored multi-stage filtration of the wastewater.

[0065] The filtered water is subsequently directed into a final storage basin 112 that is linked to the filter cartridge compartment 111. The final storage basin 112 is integrated with an olfactory sensor configured to detect foul odor in the processed water. The olfactory sensor is mounted inside the final storage basin 112 to detect the presence of foul odors or volatile compounds in the treated water. The sensor typically operates using a metal-oxide semiconductor or electronic nose principle, where chemical interactions with sensor surfaces generate measurable electrical signals proportional to odor concentration. The sensor continuously transmits real-time data to the microcontroller, which compares readings with predefined thresholds.

[0066] Upon detection of undesirable odor, the basin 112 activates a dispensing module 113 that includes the receptacle 113a storing a neutralizing liquid, together with an electronic spout 113b for releasing the neutralizing liquid into the water. The electronic spout 113b functions as a precision dispensing interface for introducing neutralizing liquid into the final storage basin 112. It is connected to the receptacle 113a via a pump or solenoid-controlled conduit. When the olfactory sensor detects undesirable odor above a set threshold, the microcontroller signals the spout 113b to release a calibrated dose of neutralizing liquid into the water. The liquid is distributed evenly across the basin 112 volume, neutralizing odor-causing compounds and restoring water to a safe, neutral condition. The electronic control allows automated, accurate dosing, minimizing chemical waste while maintaining water quality for reuse or downstream applications. This ensures that the stored water is preserved in a neutral, reusable condition.

[0067] The microcontroller further activates an inbuilt communication module for
establishing a wireless connection between the microcontroller and a computing
unit that is inbuilt with a user-interface and accessed by the user that utilizes data from the microcontroller to forecast filter replacement needs and estimate future environmental savings based on usage patterns. The user interacts with the interface through a touch screen, keyboard, or other input methods available on the computing unit. The computing unit mentioned herein includes, but not limited to smartphone, laptop, tablet.

[0068] The communication module mentioned herein includes, but not limited to Wi-Fi (Wireless Fidelity) module, Bluetooth module, GSM (Global System for Mobile Communication) module. The communication module used in the system is preferably the Wi-Fi module. The Wi-Fi module enables wireless communication by transmitting and receiving data over radio frequencies using IEEE 802.11 protocols. It connects to a network via an access point, converting digital data into radio signals. The module processes TCP/IP protocols for data
exchange, interfaces with microcontrollers through UART/SPI, and ensures
encrypted communication using WPA/WPA2 security standards for secure and
efficient wireless connectivity.

[0069] For example, the microcontroller in the laundry wastewater recycling system can send real-time sensor data, including turbidity, pH, and filter status, via the Wi-Fi module to the user’s tablet. Using a dedicated app, the user can monitor water quality and filter performance while away from the facility. The application analyzes the data to predict when the Nano-membrane or UV filters need replacement and provides estimates of water and energy saved over the month, enabling proactive maintenance and improved operational efficiency.

[0070] The present invention works best in the following manner, where the system includes vortex sedimentation tank 101 that is directly connected to the washer drain via the inlet pipe 102. The inlet pipes 102 is equipped with the sensor suite operatively linked to the microcontroller for real-time monitoring of pH levels, turbidity, pollution concentration, and dissolved oxygen, allowing immediate assessment of wastewater quality. Wastewater passes through the circular coarse strainer 103, which captures larger debris and directs the flow tangentially into the tank 101, generating vortex motion. Centrifugal force separates heavier particles into the conical base, from which the electronic valve periodically discharges accumulated sediment based on sensor feedback. Clarified water exits through the overflow outlet into the lint and fiber separation chamber 104, where the partially submerged rotary drum filter 105 captures residual fibers. The vacuum unit 106 continuously removes accumulated lint cake without interrupting filtration, while the flow rate sensor monitors water volume to track filtration efficiency. Partially filtered water is conveyed to the centrifugal microfiber extractor 107, where the cylindrical drum rotates at variable speeds controlled by the microcontroller, separating microfibers and suspended solids through centrifugal action. The water then enters the foam reduction container 108, comprising the cuboidal framework and horizontal rotating paddle 109 embedded with upward-facing air jets. The foam level sensor triggers paddle 109 rotations, and air jets are modulated to collapse foam efficiently while minimizing energy consumption. The dispensing means 110 injects calibrated hydrogen peroxide in response to color detection. The water flows into the filter cartridge compartment 111, where extendable arms 111b deploy fine mesh, activated carbon, Nano-membrane, and UV filters sequentially through spring-loaded flaps along the hollow channel 111a. Finally, water enters the storage basin 112, where the olfactory sensor detects foul odor and activates the dispensing module 113 to release neutralizing liquid, preserving water in a neutral, reusable condition. The microcontroller communicates wirelessly with the predictive analytics interface to forecast filter replacement and estimate environmental savings, completing automated, high-efficiency wastewater recycling.

[0071] Although the field of the invention has been described herein with limited reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternate embodiments of the invention, will become apparent to persons skilled in the art upon reference to the description of the invention. , C , Claims:1) A wastewater filtering and recycling system for laundry washers, comprising:
a) a vortex sedimentation tank 101 configured with an inlet pipe 102 directly connected to a washer drain, the inlet pipes 102 is equipped with a sensor suite operatively linked to an inbuilt microcontroller for measuring pH levels, turbidity, pollution concentration, dissolved oxygen, and monitor quality of wastewater being received from the washer drain in real time;

b) a circular coarse strainer 103 integrated within the inlet pipe 102 to capture larger debris from wastewater that enters tangentially in the tank 101 to generate a vortex motion for centrifugal separation of heavier segments into a conical base of the tank 101, arranged with an underflow outlet for sediment discharge and an overflow outlet for clarified water;

c) a lint and fiber separation chamber 104 positioned adjacent to the vortex sedimentation tank 101, configured to receive the clarified water from the tank 101, the chamber including a rotary drum filter 105 partially submerged in the water and a vacuum unit 106 for capturing lint and fibers over meshed sections of the rotary drum filter 105;

d) a centrifugal microfiber extractor 107 connected adjacently with the chamber, configured to collect and rotate the partially filtered water to separate microfibers and suspended solids through centrifugal force;

e) a foam reduction container 108 arranged alongside the microfiber extractor 107 to receive partly filtered water, the container including a cuboidal framework with a horizontal rotating paddle 109 embedded with upward facing air jets to destabilize and collapse foam bubbles, a foam level sensor for monitoring foam buildup, and a dispensing means 110 for introducing hydrogen peroxide for de-colorization; and

f) a filter cartridge compartment 111 arranged adjacent to the foam reduction container 108, configured to store and deploy filter cartridges 111c for sequential filtration based on detected pollutant concentration in the processed water, and to transfer the filtered water into a final storage basin 112 linked with the compartment for final quality check, including detection of foul odor by an integrated olfactory sensor that triggers activation of a dispensing module 113 integrated within the basin 112 for introducing an aromatic liquid in the filtered water.

2) The system as claimed in claim 1, wherein the vortex sedimentation tank 101 further includes a tangential inlet configuration that optimizes centrifugal force for sediment separation and the underflow outlet includes an electronic valve controlled by the microcontroller for periodic underflow discharge based on sediment accumulation detected by the sensor suite.

3) The system as claimed in claim 1, wherein the rotary drum filter 105 in the lint and fibre separation chamber 104 includes a vacuum module for removal of accumulated lint cake without interrupting filtration, and a flow rate sensor for monitoring of the volume of water being processed, indirectly aiding in assessing pollutant load by tracking filtration efficiency.

4) The system as claimed in claim 1, wherein the centrifugal microfiber extractor 107 includes a cylindrical drum that rotates at variable rotational speeds controlled by the microcontroller, adjusting based on feedback from the sensor suite to maximize microfiber separation efficiency.

5) The system as claimed in claim 1, wherein the foam reduction chamber's rotating paddle 109 is activated only upon detection of the foam level exceeding a predefined threshold by the level sensor, and the air jets are modulated in intensity to minimize energy consumption while effectively collapsing foam bubbles.

6) The system as claimed in claim 1, wherein the dispensing means 110 includes a vessel 110a storing a hydrogen peroxide, and an electronic sprayer 110b for releasing a calibrated amount of hydrogen peroxide into the partially filtered filter, in response to detected colour levels via the sensor suite, thus ensuring de-colourization without excess chemical usage.

7) The system as claimed in claim 1, wherein the filter cartridge compartment 111, includes:
a) a hollow channel 111a for receiving the processed water;

b) a plurality of extendable arms 111b arranged on an inner wall of the compartment, each arm supporting a filter cartridges 111c including fine mesh, activated carbon, Nano-membrane, and UV (ultraviolet) filters; and

c) a series of equidistantly spaced slits 111d along walls of the hollow channel 111a, each slit equipped with a spring-loaded flap designed to open when the extendable arms 111b are selectively actuated to position the corresponding filter cartridges 111c within the hollow channel 111a allowing sequential passage of water through the engaged filters for wastewater filtration.

8) The system as claimed in claim 1, wherein the dispensing module 113 includes a receptacle 113a storing neutralizing liquid, equipped with an electronic spout 113b for dispensing the neutralizing liquid upon detection of foul odour, thereby preserving water neutrality for reuse.

9) The system as claimed in claim 1, wherein the sensor suite includes a pH sensor, a turbidity sensor, a Dissolved Oxygen (DO) sensor and an electrochemical sensor.

10) The system as claimed in claim 1, wherein the microcontroller is integrated with a communication module for establishing a wireless connection with a computing unit featuring a user interface integrated with predictive analytics features, that utilizes data from the microcontroller to forecast filter replacement needs and estimate future environmental savings based on usage patterns.