DESC:This patent application claims priority benefit of Indian Provisional Patent Application No: 202141062128 entitled “INTEGRATED AERATION SYSTEM FOR WASTEWATER TREATMENT AND METHOD EMPLOYED THEREOF”, filed on 31st Dec 2021. The entire contents of the patent application is hereby incorporated by reference herein in its entirety.

TECHNICAL FIELD
[001] The disclosed subject matter relates generally to wastewater treatment system. More particularly, the present disclosure relates to an integrated aeration system and method for treating wastewater to optimize internal recirculation pumping cycles.

BACKGROUND
[002] The treatment of wastewater requires the removal of organic and inorganic contaminants present in solid or dissolved form. Organic contaminants include proteins, lipids and polysaccharides as well as hazardous compounds such as aromatic and aliphatic hydrocarbons. Nitrogen-based and phosphorus-based compounds, which have been recognized as major contributors to eutrophication, also need to be removed during the treatment process.

[003] Biological wastewater treatment systems are being capable of removing nitrogen and phosphorus generally include alternating anoxic and oxic environments, such as alternating tanks or zones configured to receive different amounts of air (i.e., oxygen) via blowers. The effectiveness of such systems depends on the ability to control the amount of dissolved oxygen within each environment, while still providing for adequate biomass growth, maintenance of different microbial species, effective solid-liquid separation, sludge stabilization, and proper optimization and control of environmental conditions in the multiple zones of the treatment system. Existing systems have attempted to achieve the best conditions for nitrogen removal, but generally introduce too much dissolved oxygen into the various zones (thereby inhibiting denitrification and phosphorous removal), and often require substantial amounts of energy, mechanical equipment and/or physical space. Further, the existing treatment plants are designed for treating the parameters such Total Suspended Solids (TSS) and Biochemical Oxygen Demand (BOD). Most of the conventional treatment plants fails to design for handling high amount of Phosphorous and Ammonical Nitrogen and total nitrogen. All the existing treatment plants must be upgraded in addition to Total Suspended Solids (TSS) and Biochemical Oxygen Demand (BOD), Ammonia and Total nitrogen with the recent guidelines. Hence, the Hydraulic retentions times are designed accordingly, to meet the additional quantity treatment as well as the quality. Thus, there remains a need for a new and improved wastewater treatment system based on Integrated Fixed Film Activated Sludge (IFFAS) technology that resolves old technical issues. Further, there is a need to build new civil structures or modify the existing structure to meet the treatment goals in terms of quality and quantity.

[004] The existing treatment facilities are designed to handle the peak flow in tune of 2.0 to 2.5 times of average flow. The conventional treatment plants are designed to meet BOD and TSS as per earlier treatment standards BOD <30, TSS<30. The new guidelines says BOD <10, TSS <10, Total Nitrogen <10 are the recent guidelines issued by the central pollution control board for all on going and existing treatment plants. In view of upgrading the existing treatment plants with very less construction destruction, there is a need to develop a system to upgrade the quantity as well as the quality of the existing treatment facility.

[005] In the light of the aforementioned discussion, there exists a need for a system and method that would overcome or ameliorate the above-mentioned limitations.

SUMMARY
[006] The following presents a simplified summary of the disclosure in order to provide a basic understanding of the reader. This summary is not an extensive overview of the disclosure and it does not identify key/critical elements of the invention or delineate the scope of the invention. Its sole purpose is to present some concepts disclosed herein in a simplified form as a prelude to the more detailed description that is presented later.

[007] An objective of the present disclosure is directed towards integrating a floating/fixed media with an aeration system integrated option and as a stand alone opion.

[008] Another objective of the present disclosure is directed towards the system helps to deploy floating/fixed media into the existing aeration system in plug and play option in the entire wastewater treatment plant in all zones.

[009] Another objective of the present disclosure is directed towards the wastewater treatment system upgrades the existing wastewater treatment plants to meet the increased flow requirements and the updated discharge guidelines.

[0010] Another objective of the present disclosure is directed towards the system helps in designing new A20 (Anerobic, Anoxic and Oxic) plants using internal recirculation (IR) mixers to optimize an internal recirculation cycles.

[0011] Another objective of the present disclosure is directed towards the system is capable of increasing the existing wastewater treatment capacity up to 100% without any major downtime.

[0012] Another objective of the present disclosure is directed towards the system upgrades the existing activated sludge process plants or extended aeration plants into A20 ( Anerobic, Anoxic and Oxic) plants by avoiding the IR mixers as an alternative options to conventional pumps.

[0013] Another objective of the present disclosure is directed towards the system helps to upgrade any existing wastewater treatment plant without much downtime by using the aerators/IFFAS/IR Mixers.

[0014] Another objective of the present disclosure is directed towards the system also helps in increasing the existing treatment capacity of the wastewater treatment plants.

[0015] Another objective of the present disclosure is directed towards the system helps to implement even for new treatment plants in less footprint area thus result in huge land savings.

[0016] Another objective of the present disclosure is directed towards the system is to provide such an improved trioval wastewater treatment system that is easier and more efficient to operate.

[0017] Another objective of the present disclosure is directed towards the system provides a Biological/Chemical/Carbon type odour control unit to handle the existing odour issued by removing the H2S in the inlet waste water.

[0018] Another objective of the present disclosure is directed towards the system provides an inlet flowmeter at the inlet flow, with integrated sensors in Aeration tank, anoxic tank and the outlet for controlling the plant numerous functions in Automode using a software via a PLC or SCADA.

[0019] Another objective of the present disclosure is directed towards the system upgrades the existing screens to the latest multi-rake screens to improve the screening capabilities.

BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In the following, numerous specific details are set forth to provide a thorough description of various embodiments. Certain embodiments may be practiced without these specific details or with some variations in detail. In some instances, certain features are described in less detail so as not to obscure other aspects. The level of detail associated with each of the elements or features should not be construed to qualify the novelty or importance of one feature over the others.

[0021] FIG. 1A is an example diagram depicting an integrated aeration system for wastewater treatment, in accordance with one or more exemplary embodiments.

[0022] FIG. 1B is an example diagram depicting an integrated aeration system for wastewater treatment with floating/fixed IFFAS module, in accordance with one or more exemplary embodiments.

[0023] FIG. 1C is an example diagram depicting an integrated aeration system for wastewater treatment system without floating/fixed IFFAS module, in accordance with one or more exemplary embodiments.

[0024] FIG. 2A is an example diagram depicting a collection tank, in accordance with one or more exemplary embodiments.

[0025] FIG. 2B is an example diagram depicting an Odour control unit, in accordance with one or more exemplary embodiments.

[0026] FIG. 2C is an example diagram depicting an inlet water quality analyzer and/or an outlet water quality analyzer, in accordance with one or more exemplary embodiments.

[0027] FIG. 2D is an example diagram depicting a vortex grit mechanism, in accordance with one or more exemplary embodiments.

[0028] FIG. 2E, FIG. 2F are example diagrams depicting Stamford Baffles and with or without Tube settlers, in accordance with one or more exemplary embodiments.

[0029] FIG. 2G is an example diagram depicting the IFFAS (Integrated Fixed Film Activated Sludge) modules, in accordance with one or more exemplary embodiments.

[0030] FIG. 2H, FIG. 2I are example diagram depicting the IR mixers, in accordance with one or more exemplary embodiments.

[0031] FIG. 2J is an example diagram depicting the aerators, in accordance with one or more exemplary embodiments.

[0032] FIG. 2K is an example diagram depicting the disc filter, in accordance with one or more exemplary embodiments.

[0033] FIG. 2L, FIG. 2M, FIG. 2N are example diagrams depicting the Belt filter press, a screw dehydrator and sludge dryer, in accordance with one or more exemplary embodiments.

[0034] FIG. 2O is an example diagram depicting the sludge digesters, in accordance with one or more exemplary embodiments.

[0035] FIG. 2P is an example diagram depicting the UV disinfection unit, in accordance with one or more exemplary embodiments.

[0036] FIG. 3 is an example of flow diagram depicting a method for treating wastewater, in accordance with one or more exemplary embodiments.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS
[0037] It is to be understood that the present disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The present disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.

[0038] The use of “including”, “comprising” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Further, the use of terms “first”, “second”, and “third”, and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

[0039] Referring to FIG. 1A, FIG. 1A is an example diagram 100a depicting an integrated aeration system for wastewater treatment, in accordance with one or more exemplary embodiments. The integrated aeration system 100a includes a grit removal unit 101, out launder 102, a primary classifier 103a, a secondary classifier 103b, a tank 105, a disc filter 107, a sludge holding tank 109, and a belt filter press 111a. The integrated aeration system 100a includes an out launder 102, aerators 104a, 104b, 104c and 104d, IR (internal recirculation) mixers 106a 106b, 106c, 106d and 106e, IFFAS(Integrated Fixed Film Activated Sludge) modules/media 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k (as shown in FIG. 1B), an Anaerobic partition wall 114a and an anoxic partition wall 114b, sensors 120a-120b, a control unit 122 (not shown), and a motor 124 (not shown). The IFFAS (Integrated Fixed Film Activated Sludge) modules 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k may also be represented as a floating media. The primary classifier 103a includes Stamford Baffles 130a and Tube settlers 132a and the secondary classifier 103b includes Stamford Baffles 130b and Tube settlers 132b (as shown in FIG. 2E and FIG. 2F).

[0040] The grit removal unit 101 may be upgraded to a vortex type grit mechanism for most optimum results. The vortex type grit mechanism may also come with grit washing facility as an attachment which is more effective for handling the grit and solids. The grit removal unit 101 may be configured to use an oil and grease removal trap for removing the floating oil in the incoming wastewater.

[0041] In the existing wastewater treatment plants, some of the treatment plants are provisioned with the primary clarifier 103a and some or not provisioned with the primary clarifiers. The primary clarifier 103a may be configured to upgrade the quantity and quality by installing Stamford baffles 130a along with or without Lamells tube settlers 132b (as shown in FIG. 2E and FIG. 2F) or Bio lace Media for increasing the existing wastewater treatment capacity. The integrated aeration system may be installed with a sludge level monitoring station along with a total suspended solids sensor (TSS) for optimizing and automation.

[0042] The tank 105 may be made into three partitions based on the treatment goals. The three partitions of tank 105 may include an anaerobic zone 118a, an Anoxic zone 118b and an Aerobic/Oxic/Aeration zone 118c. The tank 105 further includes the anaerobic partition wall 114a and the anoxic partition wall 114b may be configured to separate the anaerobic zone 118a and the anoxic zone 118b. The anaerobic partition wall 114a with over flow launder may allow the water to flow from the anaerobic zone 118a to Anoxic zone 118b. The anoxic partition wall 114b may be a permanent/temporary partition wall positioned between the anoxic zone 118b and aerobic zone 118c. However, the flow pattern of water between the anaerobic zone 118a to the anoxic zone 118b and the anoxic zone 118b to the aerobic zone 118c may be chosen based on the process requirement. The integrated aeration system 100a may include the floating/fixed media integrated with the aeration system, the floating media may be deployed into the existing aeration system in plug and play option in entire plant in all zones. The zones may include, but not limited to, the anaerobic zone 118a, the anoxic zone 118b and the aerobic zone 118c. The anaerobic zone 118a may be configured to remove the Phosphorous present in the incoming wastewater.

[0043] The IR mixers 106a 106b, 106c, 106d and 106e may be configured to keep the mixing liquor in suspend motion by creating the anaerobic zone 118a for handling the Biological Phosphorus. The primary clarifier 103a may return the activated sludge falls in the Anaerobic zone 118a for treating the Biological Phosphorous present in the incoming wastewater. The anaerobic zone 118a may not include any dissolved oxygen and may include retention time from 30 minutes to one hour. The IFFAS Bio lace Media 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k may be installed in the anaerobic zone 118a to increase the Hydraulic Retention time (HRT) by creating more surface area, where the existing aeration tank do not have enough Hydraulic Retention time.

[0044] The anoxic zone 118b is basically for handling the Biological Nitrogen Removal. The Anoxic zone 118b may be configured to remove biological nitrogen and total nitrogen. The wastewater enters from the Anaerobic Zone 118a to Anoxic Zone 118b. In this Anoxic Zone 118b, maintaining the dissolved oxygen levels between 0.2ppm to 0.5ppm. Further, installing the aerators 104a, 104b, 104c, and 104d and/or the IR mixers 106a 106b, 106c, 106d and 106e for maintaining the desired oxygen levels. Transferring the suspended solids from Aeration zone 118c to Anoxic zone 118b using the IR mixer 106e without any major pumping cost. The partition walls in the existing tank may be proposed using the civil structure or FRP walls for saving time. The IFFAS Bio lace Media 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k (as shown in FIG. 1B) may be installed in the anoxic zone 118b to increase the HRT by creating more surface area, where the existing aeration tank do not have enough Hydraulic Retention time. The cyclic denitrification process using the aerators 104a, 104b, 104c, and 104d may be installed in the existing aeration tank if there is no possibility of making partition in the existing tanks. The system 100a includes a dissolved oxygen (DO) meter and an oxidation reduction potential (ORP) meter for optimizing the process.

[0045] The aerators 104a, 104b, 104c, and 104d may be configured to add the oxygen in the aeration zone 118c. The aeration zone 118c may be configured to remove Biochemical oxygen demand (BOD) and Ammoniacal nitrogen in the nitrification process.

[0046] The IFFAS Bio lace Media 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k (as shown in FIG. 1B) may be installed in the Aeration zone 118c to increase the HRT by creating more surface area if the existing aeration zone is not having enough Hydraulic Retention time. The IR mixers106a 106b, 106c, 106d and 106e installed in the Aeration zone 118c configured to recirculate the MLSS (Mixed Liquor suspended solids) based on the ORP levels in the Anoxic zone 118b. The IR mixers106a 106b, 106c, 106d and 106e may be activated and deactivated automatically. The aerators 104a, 104b, 104c, and 104d may go as deep as 10 meters.

[0047] The secondary classifier 103b may be configured to receive the wastewater from the Aeration zone 118c. Installing the Stamford baffles 130a along with or without the Lamells tube settlers 132b (as shown in FIG. 2E and FIG. 2F) or Bio lace Media for increasing the existing capacity to improve the water quality and quantity. Furthermore, installing the sludge level monitoring station along with the total suspended Solids (TSS) sensor for optimizing and automation. The RAS (Return activated sludge) pump and piping arrangements are need to be upgraded if the existing quantity is increased.

[0048] The disc filter 107 may be configured to perform territory treatment. The disc filter 107 may be required for achieving less than <5 or 10 TSS. The disc filter 107 may use dose precipitating chemicals for removing the phosphorous in case of a higher amount of a phosphorous level more than 5ppm.

[0049] The sludge holding tank 109 may be configured to install a Belt filter press 111a or screw dehydrator 111b along with the sludge dryer 111c (as shown in FIG. 2L, FIG. 2M, FIG. 2N) for handling the waste sludge. The existing treatments includes conventional sludge beds and wherein the waste sludge is dried using the sludge beds. The integrated aeration system 100b may be equipped with sludge/anaerobic digesters 134 for sludge digestion thereby generating the gas. The gas generated may be used for generating power by a gas engine. The UV disinfection unit 136 (as shown in FIG. 2P) may be configured to perform UV disinfection to kill the Pathogens and coliforms present in the treated waste water. The treated outlet water may include a complete water quality measuring station. The sensor 120a may be a water quality inlet sensor and the sensor 120b may be a water quality outlet sensor.

[0050] The sensors 120a-120b may be disposed in the aerobic/anoxic zone. The sensors 120a-120b may include, but not limited to, a water quality sensor, a nitrate sensor, a dissolved oxygen sensor, an ammonia sensor, and/or an ORP sensor nitrate sensors, orthophosphate sensors, and a velocity sensor. The ORP sensor/TN/Nitrate sensor 120 may monitor the denitrification levels and to control using the software.

[0051] The control unit 122(not shown) may be operatively connected to the sensors 120a-120b (as installed) and the motor 124(not shown) for regulating a position of flow-diversion gate at least partially in accordance with input from the sensors 120a-120b. The control unit 122 may be operatively connected to the sensors 120a-120b and the motor 124 for regulating or adjusting a flow state or configuration of said flow-diversion mechanism at least partially in accordance with input from the sensors 120a-120b.

[0052] Referring to FIG. 1B, FIG. 1B is an example diagram 100b depicting an integrated aeration system for wastewater treatment with floating/fixed IFFAS module, in accordance with one or more exemplary embodiments. The integrated aeration system 100b includes the out launder 102, the aerators 104a, 104b, 104c and 104d, the IR (internal recirculation) mixers 106a 106b, 106c, 106d and 106e, the IFFAS(Integrated Fixed Film Activated Sludge) modules 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k, the anaerobic partition wall 114a and the anoxic partition wall 114b, and the tank 105. The IFFAS (Integrated Fixed Film Activated Sludge) modules 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k may also be represented as a floating media.

[0053] The tank 105 may be made into three partitions based on the treatment goals. The three partitions of tank 105 may include an anaerobic zone 118a, an anoxic zone 118b and an aerobic/oxic/aeration zone 118c. The tank 105 further includes the anaerobic partition wall 114a and the anoxic partition wall 114b may be configured to separate the anaerobic zone 118a and the anoxic zone 118b. The anaerobic partition wall 114a with over flow launder may be configured to transmit water from the anaerobic zone 118a to anoxic zone 118b. The anoxic partition wall 114b may be a permanent/temporary partition wall positioned between the anoxic zone 118b and aerobic zone 118c. However, the flow pattern between the anaerobic zone 118a to the anoxic zone 118b and the anoxic zone 118b to the aerobic zone 118c may be selected based on the process requirement. The system 100b may include the floating media integrated with the aeration system, the floating/fixed media may be deployed into the existing aeration system in plug and play option in entire plant in all the zones. The anaerobic zone 118a may be configured to remove the Phosphorous present in the incoming wastewater.

[0054] The installation of the IR mixers 106a 106b, 106c, 106d and 106e and the angle of the IR mixers 106a 106b, 106c, 106d and 106e may be adjusted based on the need and requirement. The need and requirement may include, but not limited to, the Anaerobic zone 118a of the tank 105 may be installed with or without IFFAS module 108a, the Anoxic Zone 118b of the tank 105 may be installed with or without IFFAS modules 108b, 108c, 108d, 108e, 108f, 108g, and the Aerobic/Oxic/Aeration zone 118c of the tank 105 may be installed with or without IFFAS modules 108h, 108i, 108j, and 108k.

[0055] The IR mixers 106a installed in the anaerobic zone 118a may be represented as anaerobic mixers. The IR mixers 106b and 106c installed in the anoxic zone 118b may be represented as anoxic mixers. The IR mixers 106b and 106c installed in the anoxic zone 118b may be configured to mix the suspended solids in the anoxic zone 118b. The IR mixers 106d and 106e installed in the anaerobic zone 118a may be configured to mix the suspended solids in the anaerobic zone 118c.

[0056] The aerators 104a, 104b, 104c and 104d may be installed to perform the mixing and aeration for nitrification/denitrification. The aerators 104a, 104b, 104c and 104d may mix up to 10 meter therefore results huge land area savings. The aerators 104c and 104d based on the organic loads aeration and mixing may take place in the Aeration zone 118c. The dissolved oxygen in this Aeration zone 118c may be maintained between 1.5mg/l.to 2.0mg/l. The aerators 104a, 104b, 104c and 104d may also be configured to turn on/off based on the level of nitrification and denitrification required in the integrated aeration system 100 thus the required velocities are maintained throughout all the zones.

[0057] The IR (internal recirculation) mixers 106a 106b, 106c, 106d and 106e may be activated based on the denitrification level requirement. The IR (internal recirculation) mixers 106a 106b, 106c, 106d and 106e may transfer the mixed liquor suspended solids from the aeration zone 118a to the anoxic zone 118b.

[0058] The IR mixers 106a 106b, 106c, 106d and 106e may be provided in stages or compartments for enhancing the efficiency of the denitrification and phosphorous release processes. It is possible to alter the operating state of the IR mixers 106a 106b, 106c, 106d and 106e in accordance with the changes in the flow state or configuration of gate and/or changes in one or more sensed process parameters. Specifically, the IR mixers 106a 106b, 106c, 106d and 106e may be actuated from the activated position to the deactivated position or from the deactivated position to the activated position in accordance with a pre-determined position change of the flow diversion gate or by a detection by the sensor 120a of a predetermined magnitude of a preselected control parameter. For example, the control unit 122 may be configured to deactivate the IR mixers 106a 106b, 106c, 106d and 106e when the gate closes and activates the IR mixers 106a 106b, 106c, 106d and 106e when the gate opens. This synchronicity results in improved phosphorous release.

[0059] The floating IFFAS (Integrated Fixed Film Activated Sludge) modules 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k may be configured to upgrade the existing wastewater treatment plants. The floating/fixed IFFAS(Integrated Fixed Film Activated Sludge) modules 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k may be configured to treat wastewater in the existing treatment plants or to increase the efficiency of the existing treatment plants. The IFFAS modules 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k may consists of a textile media which helps bacteria to grow for increasing more surface area in the given space.

[0060] In an exemplary embodiment, the influent may first enter into the Anaerobic zone 118a for the removal of phosphorous by using the anaerobic bacteria, in this the aerator 104a may be operated as just mixer for keeping the mixed liquor in suspension. The influent may include, but not limited to, water, wastewater, fluid, other liquid flowing into a reservoir, basin or treatment plant, and so forth.

[0061] The biological phosphorous removal may be achieved in the anaerobic zone 118a. The sensor 120a may be configured to transmit one or more signals to the IR mixer 106a installed in the Aerobic zone 118c based on the nitrate loads for inter circulating the activated sludge via a baffle wall opening. Further, the IR mixers 106b and 106c installed in the anoxic zone 118b may be configured to mix the incoming sludge in the anoxic zone 118b from the aeration zone 118c.

[0062] The HRT (Hydraulic Retention time) of zone may be designed based on the phosphorus loads and desired outlet goals. The floating/fixed IFFAS module 108a may be deployed to increase the surface area/Hydraulic Retention time (HRT) of the Anaerobic zone118a in case of upgrading the existing treatment plant based on the existing Hydraulic Retention time (HRT) available. Over flow from this Anaerobic zone 118a may enter into Anoxic zone 118b. They are operated and considered by using modified Ludzack-Ettinger (MLE) Process.

[0063] The aerators 104a, 104b may be configured to maintain the dissolved oxygen level between 0.2ppm to 0.5ppm in the anoxic zone 118b. Bacteria feed on the carbon-rich influent, using molecular oxygen from the abundant nitrate to drive metabolic reactions. Nitrate is first reduced to nitrite, and then to nitrogen gas, which is subsequently stripped in the aeration basin. In the process, portions of the alkalinity and oxygen consumed during nitrification are restored. The floating/fixed IFFAS modules 108b, 108c, 108d, 108e, 108f, 108g may be deployed to increase the surface area/HRT of the anoxic zone 118b in case of upgrading the existing treatment plant based on the existing Hydraulic Retention time (HRT) available. Over flow from the anoxic zone 118b may enter into the Oxic zone/Aeration Zone 118c.

[0064] The IR mixers 106c, 106d are placed in the anoxic opening zone 118b to circulate/Internal transfer the activated sludge. The IR mixers 106c, 106d may be operated based on the output of the sensor 120a for the nitrate levels or time based controller system. The IR mixers 106c, 106d in the anoxic zone and the IR mixer in the Aeration zone 106e may operate with a complete sync. The RPM(Revolutions per minute) of the IR mixers 106c, 106d, and 106e may be controlled between the aeration zone 118c and the anoxic zone 116b based on the nitrate levels. The angles of the IR mixers 106a, 106b, 106c, 106d and 106e may be adjusted based on the flow requirement. The floating/fixed IFFAS modules 108h, 108i, 108j, and 108k may be deployed to increase the surface area/HRT of the Aeration zone 118c in case of upgrading the existing treatment plant based on the existing Hydraulic Retention time (HRT) available. Over flow from the Aeration zone 118c may enter into the secondary classifier 103b.

[0065] The integrated aeration system 100b may have the process control to do a simultaneous aeration and mixing, based on the requirement and with the help of ORP (Oxidation-reduction potential) system the program may help in controlling the aeration/mixing. The integrated aeration system 100b may be configured to increase the existing treatment capacity up to 100% without any major downtime.

[0066] The integrated aeration system 100b may be configured to operate in all three zones without any physical partition by adjusting the angle of the aerators 104a, 104b, 104c and 104d. The integrated aeration system 100b may be configured to control the mode of aeration/mixing. The integrated aeration system 100b may be adopted wherein the physical partition is not possible. The integrated aeration system 100b may configured to add the IFFAS modules 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k for increasing the capacity.

[0067] The integrated aeration system 100b may be a ditch activated sludge system which incorporates the IR mixers106a 106b, 106c, 106d and 106e in a continuous flow ditch to operate the aeration system independently. This enables the entire ditch to cycle between aerobic and anoxic conditions, and this capability, when used in conjunction with a control strategy which maximizes the assimilation of influent BOD under anoxic conditions, results in improved SVI control, improved total nitrogen removal, energy savings and alkalinity recovery. During an anoxic cycle, nitrate may be produced in the system through the biological oxidation of ammonia, is used as the electron acceptor instead of oxygen. The implementation of this control strategy to achieve these objectives involves the control of the time, duration and frequency of the anoxic periods.

[0068] The most basic control strategy would utilize simple program timers to activate the aerators 104a, 104b, 104c, and 104d and the IR mixers 106a 106b, 106c, 106d and 106e and deactivate at preselected times. The activating and deactivating times may be selected based on knowledge of the diurnal loading variations for a specific treatment plant along with the site-specific treatment requirements. The out launder 102 may be configured to allow the treated water to overflow from the Aeration zone 118c.

[0069] Referring to FIG. 1C, FIG. 1C is an example diagram 100c depicting an integrated aeration system for wastewater treatment system without floating/fixed IFFAS module, in accordance with one or more exemplary embodiments. The diagram 100c includes the out launder 102, the aerators 104a, 104b, 104c and 104d, the IR (internal recirculation) mixers 106a, 106b, 106c, 106d and 106e, the anaerobic partition wall 114a and the anoxic partition wall 114b, the tank 105.

[0070] The out launder 102 may be configured to allow the treated water to overflow from the Aeration zone 118c. The aerators 104a, 104b, 104c and 104d may be installed to perform the Mixing and Aeration for Nitrification/Denitrification. The aerators 104a, 104b, 104c and 104d may mix up to 10 meter therefore results huge land area savings.

[0071] The IR (internal recirculation) mixers 106a 106b, 106c, 106d and 106e may turn on based on the denitrification level requirement. The IR (internal recirculation) mixers 106a 106b, 106c, 106d and 106e may transfer the mixed liquor suspended solids from the Aeration zone to the Anoxic zone. An ORP Sensor/TN/Nitrate Sensor may monitor the denitrification levels. The anaerobic partition wall 114a with over flow launder may be configured to transmit water from the Anaerobic zone 118a to Anoxic zone 118b. The anoxic partition wall 114b may be a permanent /temporary partition wall between the anoxic zone 118b and aerobic zone 118a. However, the flow pattern between the Anaerobic zone 118a to Anoxic zone 118b and Anoxic zone 118b to Aerobic zone 118c may be chosen based on the process requirement. The installation of IR mixers 106a, 106b, 106c, 106d and 106e and their angle may be adjusted based on the need and requirement.

[0072] Referring to FIG. 2A, FIG. 2A is an example diagram 200a depicting a collection tank, in accordance with one or more exemplary embodiments. The diagram includes a collection tank 201.

[0073] Referring to FIG. 2B, FIG. 2B is an example diagram 200b depicting an Odour control unit, in accordance with one or more exemplary embodiments. The diagram 200b includes a Biological/Chemical/Carbon type Odour control unit 124 may be configured to handle the existing Odour issues by removing the H2S in the water quality.

[0074] Referring to FIG. 2C, FIG. 2C is an example diagram 200c depicting an inlet water quality analyzer and/or an outlet water quality analyzer, in accordance with one or more exemplary embodiments. The diagram 200c depicts an inlet water quality analyzer 128a may be configured to measure the quality of the wastewater at the inlet and an outlet water flow meter 128b may be configured to measure the outlet flow of wastewater.

[0075] Referring to FIG. 2D, FIG. 2D is an example diagram 200d depicting a vortex grit mechanism, in accordance with one or more exemplary embodiments. The diagram 200d depicts the vortex grit removal unit 101. The vortex grit removal unit 101 may include a grit washing facility as an attachment which is more effective for handling the grit and solids.

[0076] Referring to FIG. 2E, FIG. 2F, FIG. 2E, FIG. 2F are example diagrams 200e and 200f depicting Stamford Baffles and with or without Tube settlers, in accordance with one or more exemplary embodiments. The diagram 200e and 200f depicts Stamford Baffles 130a, 130b and Tube settlers 132a and 132b. The Stamford Baffles 130a and Tube settlers 132a may be installed in the primary classifier 103a and the secondary classifier 103b along with or without Lamells tube settlers or Bio lace Media to increase the existing capacity of the primary classifier 130a and the secondary classifier 130b.

[0077] Referring to FIG. 2G, FIG. 2G is an example diagram 200g depicting the IFFAS (Integrated Fixed Film Activated Sludge) modules, in accordance with one or more exemplary embodiments. The diagram 200g depicts the IFFAS (Integrated Fixed Film Activated Sludge) modules 108a, 108b, 108c, 108d, 108e, 108f, 108g, 108h, 108i, 108j and 108k may be deployed to increase the surface area/HRT of the Anaerobic zone 118a, the anoxic zone 118b, and the Aeration zone 118c in case of upgrading the existing treatment plant based on the existing Hydraulic Retention time (HRT) available.

[0078] Referring to FIG. 2H, FIG. 2I, FIG. 2H, FIG. 2I are example diagram 200h and 200i depicting the IR mixers, in accordance with one or more exemplary embodiments. The diagram 200h and 200i depicts the IR mixers 106a installed in the anerobic zone 118a may be represented as anerobic mixers. The IR mixers 106b and 106c installed in the anoxic zone 118b may be represented as anoxic mixers. The IR mixers 106b and 106c installed in the anoxic zone 118b may be configured to mix the suspended solids in the anoxic zone 118b. The IR mixers 106d and 106e installed in the anerobic zone 118a may be configured to mix the suspended solids in the anerobic zone 118c.

[0079] Referring to FIG. 2J, FIG. 2J is an example diagram 200j depicting the aerators, in accordance with one or more exemplary embodiments. The diagram 200j depicts the aerators 104a, 104b may be configured to maintain the dissolved oxygen level between 0.2ppm to 0.5ppm. The aerators, 104c and 104d in the anoxic zone 118b.may be installed to perform the Mixing and Aeration for Nitrification/Dentification. The aerators 104a, 104b, 104c and 104d may mix up to 10 meter therefore results huge land area savings.

[0080] Referring to FIG. 2K, FIG. 2K is an example diagram 200k depicting the disc filter, in accordance with one or more exemplary embodiments. The diagram 200k depicts the disc filter 107. The disc filter 107 may be configured to perform territory treatment. The disc filter 107 may be required for achieving less than <5 or 10 TSS. The disc filter 107 may be required to dose precipitating chemicals for removing the phosphorous using the dosage in case of a higher amount of a phosphorous level more than 5ppm.

[0081] Referring to FIG. 2L, FIG. 2M, FIG. 2N, FIG. 2L, FIG. 2M, FIG. 2N are example diagrams 200l, 200m, and 200n depicting the Belt filter press, a screw dehydrator and sludge dryer, in accordance with one or more exemplary embodiments. The diagram 200k depicts the Belt filter press 111a, a screw dehydrator 111b and a sludge dryer 111c. The Belt filter press 111a or screw dehydrator 111b along with a sludge dryer 111c may be configured to handle the waste sludge.

[0082] Referring to FIG. 2O, FIG. 2O is an example diagram 200o depicting the sludge digesters, in accordance with one or more exemplary embodiments. The diagram 200o depicts the sludge digesters 134. The sludge digesters 134 may also be represented as anaerobic digesters for sludge digestion and gas generation. The gas generated may be used for generating power by a gas engine.

[0083] Referring to FIG. 2P, FIG. 2P is an example diagram 200o depicting the UV disinfection unit, in accordance with one or more exemplary embodiments. The diagram 200o depicts the UV Disinfection unit 136. The UV Disinfection unit 136 may be configured to perform the UV disinfection to kill the Pathogens and coliforms present in the treated waste water. The outlet water quality analyzer may be configured to measure the quality of the treated outlet water

[0084] Referring to FIG. 3, FIG. 3 is another example of flow diagram 300 depicting a method for treating wastewater, in accordance with one or more exemplary embodiments. The method 300 may be carried out in the context of the details of FIG. 1A, FIG. 1B, FIG. 1C, FIG. 2A, FIG. 2B, FIG. 2B, FIG. 2C, FIG. 2D, FIG. 2E, FIG. 2F, FIG. 2G, FIG. 2H, FIG. 2I, FIG. 2J, FIG. 2K, FIG. 2L, FIG. 2M, FIG. 2N, FIG. 2O, and FIG. 2P. However, the method 300 may also be carried out in any desired environment. Further, the aforementioned definitions may equally apply to the description below.

[0085] The method commences at step 302, removing hydrogen sulfide in the wastewater by an odour control unit. Thereafter at step 304, measuring the inlet flow of wastewater using a flow meter at water quality measuring station. Thereafter at 306, measuring bod/cod/toc,ph, ammonia using multi-parameter sensor to know the water quality of the inlet water parameters. Thereafter at 308, removing floating oil in the incoming wastewater by an oil and grease removal trap. Thereafter at 310, handling grit and solids in the incoming wastewater by a vortex grit mechanism. Thereafter at 312, improving the water quantity and quality by installing stamford baffles along with or without lamells tube settlers or bio lace media. Thereafter at 314, monitoring sludge level by installing a sludge level monitoring station along with total suspended solids (TSS) sensor. Thereafter at 316, falling wastewater from a primary classifier to an anaerobic zone. Thereafter at 318, removing biological phosphorus present in the incoming wastewater and keeping the mixing liquor in suspend motion using IR mixers. Thereafter at 320, installing IFFAS(integrated fixed film activated sludge) bio lace media in the anaerobic zone for increasing the hydraulic retention time by creating more surface area.

[0086] Thereafter at 322, entering wastewater from the anaerobic zone to an anoxic zone. Thereafter at 324, removing biological nitrogen in the anoxic zone and maintaining the dissolved oxygen levels between 0.2ppm to 0.5ppm using aerators. Thereafter at 326, transferring the suspended solids from an aeration zone to the anoxic zone using the IR mixers. Thereafter at 328, installing (integrated fixed film activated sludge) IFFAS bio lace media in the anoxic zone for increasing the hydraulic retention time by creating more surface area. Thereafter at 330, performing a cyclic denitrification process using the aerators. Thereafter at 332, adding the oxygen in an aeration zone by using the aerators. Thereafter at 334, installing (integrated fixed film activated sludge) IFFAS bio lace media in the aeration zone for increasing the hydraulic retention time by creating more surface area.

[0087] Thereafter at 336, installing the IR mixers in the aeration zone for recirculating the MLSS ( mixed liquor suspended solids) based on the ORP levels in the anoxic zone. Thereafter at 338, falling the wastewater from the aeration zone to a secondary clarifier. Thereafter at 340, improving the water quantity and quality by installing stamford baffles along with or without lamells tube settlers or bio lace media. Thereafter at 342, achieving less than <5 or 10 TSS by performing the territory treatment. Thereafter at 344, handling waste sludge using a belt filter press or screw dehydrator along with a sludge dryer. Thereafter at 346, absorbing sludge from the wastewater and generating gas by anerobic digesters. Thereafter at 348, generating power by a gas engine using the gas generated by the anerobic digesters. Thereafter at 350, killing pathogens and coliforms present in the treated waste water using UV disinfection. Thereafter at 352, measuring the quality of treated water at a treated water outlet by a water quality analyzer.

[0088] Reference throughout this specification to “one embodiment”, “an embodiment”, or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, appearances of the phrases “in one embodiment”, “in an embodiment” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.

[0089] Although the present disclosure has been described in terms of certain preferred embodiments and illustrations thereof, other embodiments and modifications to preferred embodiments may be possible that are within the principles of the invention. The above descriptions and figures are therefore to be regarded as illustrative and not restrictive.

[0090] Thus the scope of the present disclosure is defined by the appended claims and includes both combinations and sub-combinations of the various features described hereinabove as well as variations and modifications thereof, which would occur to persons skilled in the art upon reading the foregoing description.
,CLAIMS:We Claim:
1. An integrated aeration system for waste water treatment, comprising:

a water tank is partioned into three partions based on one or more treatment goals, the three partions comprises an Anerobic zone, an Anoxic zone, and an Aerobic zone, whereby the water tank is installed with at least one of: the Anerobic zone with an Integrated (IFFAS) Bio lace media; the Anerobic zone without the IFFAS media; the Anoxic zone with the IFFAS Bio lace media; the Anoxic zone without the IFFAS Bio lace media; the Aerobic zone with the IFFAS Bio lace media; and the Aerobic zone without the IFFAS Bio lace media, wherein the IFFAS Bio lace Media installed in the Anerobic zone, the Anoxic zone, and the Aerobic zone to increase Hydraulic Retention time (HRT) by creating more surface area, the flow pattern of influent between the Anerobic zone to the Anoxic zone and the Anoxic zone to the Aerobic zone is chosen based on the process requirement,

an aerator is operated as a mixer for keeping the Mixed liquor in suspension, the influent enter into the Anerobic zone for the removal of biological phosorphus using the anerobic bacteria, the over flow of the influent from the Anerobic zone enter into the Anoxic zone and the Anoxic zone, the aerator configured to maintain dissolved oxygen level of the influent between 0.2ppm to 0.5ppm;

a nitrate sensor configured to send signals to a IR mixer installed in the Aerobic zone for Inter circulating the activated sludge via a baffle wall opening, the IR mixer is installed in the Anoxic zone configured to mix the incoming sludge in the Anoxic zone, Over flow from this tank enter into the Aeration Zone, the aerators in the Aeration Zone configured to perfrom aeration and mixing based on the organic loads; and

the IR mixer placed in the anoxic opening zone configured to circulate/Internal transfer the activated sludge, whereby the IR mixer is worked based on the sensor output for the nitrate levels or time based controller system, the IR mixer placed in the Anoxic zone and the IR mixer placed in the Aeration zone works with a complete synchronization, the IR mixers RPM is controlled between the Anoxic zone and the Aeration zone based on the nitrate levels, the IR mixer angles are adjusted based on the flow requirement.

2. The system as claimed in claim 1, comprising a grit removal unit is configured to use an oil and grease removal trap for removing the floating oil in the incoming wastewater.

3. The system as claimed in claim 1, wherein the dissolved oxygen in the Aeration zone is maintained between 1.5mg/l.to 2.0mg/l.

4. The system as claimed in claim 1, wherein the IFFAS Bio lace media is a floating/fixed media integrated with aeration system, wherein the floating/fixed media is deployed into the aeration system by deploying in plug and play option in the Anerobic zone, the Anoxic zone, and the Aerobic zone.

5. The system as claimed in claim 1, wheren the aerator activates and deactivates based on the level of nitrification and denitrification required in the aeration system thus the required velocities are maintained thoughout all the Anerobic zone, the Anoxic zone, and the Aerobic zone.

6. The system as claimed in claim 1, wherein the aerator is configured to perform the Mixing and Aeration for Nitrification and Dentification.

7. The system as claimed in claim 1, wherein the aerator is able to mix upto 10 meter thus result huge land area savings.

8. The system as claimed in claim 1, comprising an out launder is configured to allow the treated water to overflow from the Aeration Tank.

9. The system as claimed in claim 1, wherein the IR Mixer is monitored by the ORP Sensor/TN/NitrateSensor and is activated based on the denitrification level requirement and transfer the Mixed Liquor suspended solids from aeration zone to Anoxic zone.

10. The system as claimed in claim 1, wherein the Anerobic zone comprising a partition wall with over flow launder configured to transfer water from the Anerobic zone to the Anoxic zone.

11. The system as claimed in claim 1, comprising a primary classifier and a secondary classifier with Stamford Baffles and Tube settlers.

12. The system as claimed in claim 11, wherein the secondary classifier with Stamford Baffles and Tube settlers are configured to receive the wastewater from the Aeration zone and increase the existing capacity to improve the water quality and quantity.

13. The system as claimed in claim 1, comprising a disc filter is configured to perform territory treatment and is required for achieving less than <5 or 10 total suspended solids, wherein the disc filter is configured to use dose precipitating chemicals for removing the phosphorous in case of a higher amount of a phosphorous level more than 5ppm.

14. The system as claimed in claim 1, comprising an ultraviolet (UV) disinfection unit is configured to perform UV disinfection to kill the Pathogens and coliforms present in the treated waste water.

15. A method for treating waste water using an integrated aeration system, comprising:
partioning a water tank into three partions based on one or more treatment goals, the three partions comprises an Anerobic zone, an Anoxic zone, and an Aerobic zone;

installing the water tank with at least one of: the Anerobic zone with IFFAS Bio lace media; the Anerobic zone without IFFAS Bio lace media; the Anoxic zone with IFFAS Bio lace media; the Anoxic zone without IFFAS Bio lace media; the Aerobic zone with IFFAS Bio lace media; and the Aerobic zone without IFFAS Bio lace media;

selecting the flow pattern of influent between the Anerobic zone to the Anoxic zone and the Anoxic zone to the Aerobic zone based on the process requirement;

operating an aerator as a mixer for keeping the Mixed liquor in suspension and the influent enter into the Anerobic zone for the removal of biological phosorphus using the anerobic bacteria;

entering the over flow of the influent from the Anerobic zone into the Anoxic zone and the Anoxic zone maintaining dissolved oxygen level of the influent between 0.2ppm to 0.5ppm by the aerator;

sending signals from a nitrate sensor to a IR mixer installed in the Aerobic zone for Inter circulating the activated sludge via a baffle wall opening;

mixing the incoming sludge in the Anoxic zone using the IR mixer is installed in the Anoxic zone, the Over flow from the Anoxic zone enter into the Aeration Zone;

perfroming aeration and mixing based on the organic loads by the aerators in the Aeration Zone.

16. The method of claim 15, comprising a step of circulating and/or internal transferring the activated sludge using the IR mixer placed in the anoxic opening zone.

17. The method of claim 15, comprising a step of functioning of the IR mixer placed in the Anoxic zone and the IR mixer placed in the Aeration zone works with a complete synchronization.

18. The method of claim 15, comprising a step of controlling the IR mixers revolutions per minute between the Anoxic zone and the Aeration zone based on the nitrate levels and adjusting the IR mixer angles based on the flow requirement.