Field of the Invention

The present invention relates to a non-woven fabric filter cartridge for water purification system. More particularly, the present invention relates to a non-woven fibrous media which may be utilized in drinking water purifiers that works on water supply fed through plumbing or gravity. Furthermore, this invention also relates to a non-woven fabric filter cartridge in which the variants include multilayers of pleated or flat nonwoven media in various shape, size and configuration. Further this invention also relates to a method of preparing the non-woven fabric filter cartridge for water purification system.

Background of the invention and related prior Art

Various filters for clarifying a fluid are presently developed and produced. Among them, cartridge-type filters (hereinafter called filter cartridges) are widely used in the industrial field, for example, for removing suspended particles in industrial liquid materials, removing cakes flowing out of a cake filtering apparatus and clarifying industrial water. Several kinds of structures of a filter cartridge have so far been proposed. The most typical one is a bobbin winder-type filter cartridge, which is a cylindrical filter cartridge prepared by winding a spun yarn as a filter material on a perforated cylindrical core in a twill form and then fluffing the spun yarn. This type has long been used due to inexpensiveness and easiness in production. Another type of structure includes a non-woven fabric-laminated type filter cartridge. This is a cylindrical filter cartridge prepared by winding several kinds of non-woven fabrics such as a carding non-woven fabric stepwise and concentrically on a perforated cylindrical core. A recent advanced technique in a non-woven fabric production has allowed some of them to be put to practical use.

Well water contains many contaminants. If not removed from the water, these contaminants may present health risks, may damage plumbing and personal property and may adversely affect the taste of the water. The principal contaminants naturally occurring in well water are iron, sulphur and manganese. Many man-made contaminants are also now found in well water. These man-made contaminants, generically defined as halogenated organics, may be introduced into the water supply as part of or as byproducts of herbicides, pesticides, fertilizers and the like placed on and into the ground. These halogenated organics are believed to be carcinogenic and may present serious long term health risks to users of this contaminated water. Many different systems have been developed in an attempt to remove contaminants from our water supply, be it a central water system or a well system. The three main system types for contaminant removal consist of chlorination, ion exchange and filtration.

Normally household storage water purifier will have two containers placed one above the other with suitable filtration and purification method. The top container is meant for pouring unpurified water which is to be filtered the bottom container is meant to collect the purified water.

The necessity has been occurred for filtering water for use, drinking, and consumption to remove impurities has long been recognized. The traditional method of purifying water is, of course, to pass the water through a water treatment facility. Such purified water is, however, often unavailable for persons engaged in international travel and for persons traveling through the back country. Although water may macroscopically appear clean and pure, it may nevertheless contain such impurities as bacteria, pesticides etc. For backpackers and persons traveling abroad, it is also desirable that the filter be small and easily portable, yet capable of separating such impurities from water drawn from a body of water, such as a lake or stream.

Another problem with respect to the intake of water into water filter relates to dynamic bodies of water. In rivers and streams, the opening of an inlet hose on the filter may bob up and down in the water and remain, at least momentarily, above the surface of the water which prevents drawing a full stream of water into the intake hose.

There are so many researchers who have tried to invent many system to purify water. A few of their effort have been described below.

The document CN201618466 describes a water bucket with an active carbon filter consists of a water bucket, a water bucket cover and a filter, wherein a trumpet-shaped water connection port is nested in the opening of the water bucket, a gauze filter is arranged in the water connection port, the internal layer of the gauze filter is a non-woven fabric filter cartridge, granular active carbon is placed in the non-woven fabric filter cartridge, a micro bore filtrating membrane is arranged on the non-woven fabric filter cartridge, and a round fiber sheet is arranged on the micro bore filtrating membrane.

The other document RU74822 describes to obtain of high-quality drinking water can be used as the change filter cartridge at the point of the purification of drinking water with the increased content of iron before the everyday filters. An increase in reliability and convenience in its operation and the guarantee of purification of water with the increased content of iron. Filter cartridge contains of supply of cleaned water before the filter, filtration, conclusions of purified water, additional filtration, of supply of cleaned water is executed in the form cone-shaped shell with the radial cut, the before the filter is executed in the form cylindrical shell with thread beyond the external surface, the filtration is executed in the form shell, filled for the sake of the mixture of adsorbing components, above the mixture of the adsorbing components is located grid, the unit of conclusions of purified water is executed in the form funnel with the obtuse angle and opening in the center. Before funnel the edges of hardness are established. If the shell of units of filtration is executed in the form cylinder, then the base of funnel before the conclusions of purified water is executed in the form circle. Grid before the filtration is executed flat. The additional filtration is executed in the form grid the layers of non-woven filter fabrics.

During the production of potable water clays, particulates and pathogenic organisms are removed by coagulation with coagulants such as ferric chloride or alum, followed by the addition of polyelectrolytes as coagulant aids and in some cases high molecular polymeric organic filter aids. The coagulated material is removed by either sedimentation or filtration through sand filters.

Grey water treatment is of increasing importance due to the large quantities produced by industrial laundries and households. Grey water is waste water which is not grossly contaminated by urine and generally arises from plumbing fixtures not designed to receive human excrement or discharges. Grey water includes bath tub, shower, hand basin, laundry tub, spa bath, washing machine and kitchen discharges. Grey water characteristics vary between households and depend upon the dynamics of the household, the age and number of occupants, the lifestyle of the occupant and water usage characteristics of the occupant.

Grey water contains variable quantities of inorganics (e.g. dissolved salts such as phosphates, nitrates etc), organics (e.g. oils, greases, soap, toothpaste, shampoo/conditioner, hair dyes, surfactants and cleaning chemicals), physical impurities (e.g. dirt, food, sand, lint, hair, blood, urine, fasces etc) and micro organisms (e.g. bacteria, viruses, protozoa etc) which arise from household and personal hygiene practices. As grey water accounts for the majority of waste water produced by each household it is desirable to purify this water for further use in a manner that protects public health and meets health guidelines.

Grey water treatment reuse can range from simple grey water diversion devices (GDD) to sophisticated treatment systems. The grey water diverting devices do not treat the grey water waste but divert the discharge through coarse screens to remove materials which would clog pumps, block pipes and burden the pollutant load before it is used for sub-surface irrigation.

Currently there are a number of processes used to treat grey water discharge. These include primary treatment which reduces the gross primary pollutant load of the waste water through the settling of solids, flotation, anaerobic digestion, filtration, aeration, clarification and finally disinfection. Secondary pollutants such as nitrates, phosphates, boron, sodium etc are not reduced by this type of treatment.

Water treatment processes are not completely reliable for the removal of pathogenic micro-organisms. Accordingly, as a final stage in the treatment of grey water and other water treatment processes, conventional chemical disinfectants, such as chlorine or ozone, are added to the treated water in order to destroy common water borne pathogenic microorganisms. Some microorganisms, however, are unaffected by such conventional treatments and the potential of such microorganisms entering water destined for human contact and/or consumption poses serious public health concerns.

Thus, whilst there are a number of processes well recognized for the treatment of water sources, especially grey water, a significant problem remains in the ability to selectively remove a range of contaminants, such as surfactants, organic, inorganic and/or biological contaminants, from water to meet extremely strict regulatory requirements in relation to pH, turbidity, thermo tolerant coliforms for suitability in surface irrigation, reuse and/or consumption. Conventional water treatment practices have proven ineffective in the selective removal of such a cocktail of contaminants.

It is also to be noted that the knowledge that, filtration is the process of separating particles, or contaminants from a fluid (liquid or gas), and can be accomplished by passing the fluid through a porous filter medium that stops or captures the particles while permitting the fluid to pass there through, is well known from historical times, yet the refinements and innovative improvements are a regular process on the development front. Such fluid filtering is used extensively in the manufacture of polymer products, medicinal products, mineral and metallurgical processing, petroleum refining, water purification, emissions control, and in beverage and food preparation.

Most conventional filter media may be categorized into two broad categories: a surface-type filter medium and a depth-type filter medium. As its name implies, the surface-type filter medium stops fluid contaminants on its surface. Examples of surface-type filter media are calendared melt-blown material, cellulose and/or paper, membranes, woven screen, porous metal, and porous non-woven material. In contrast, a depth-type filter medium captures contaminants within the medium, i.e. between an upstream surface and a downstream surface of the medium. An example of a depth-type filter medium is a resin bonded filter.

In general, as a fluid is forced through the filter medium and filtered, over time the pressure drop across the filter medium will gradually increase. Such increase is due to the collection of particles, or contaminants on the filter medium, i.e., the filter medium gradually becomes loaded with the contaminants trapped or stopped thereby. An increasing pressure drop across the filter medium, however, translates into an increasing load on the means (such as a blower or pump) employed to force the fluid through the filter medium. In addition, since the life of a filter is generally defined by a maximum allowable pressure drop, a slower increase in pressure drop translates into a longer filter life.

When a surface-type filter medium is used, one method of minimizing the pressure drop across the filter medium is to maximize the available surface area of the filter medium. In order to increase the surface area in a surface-type filter, pleated filter media have been developed. Pleated surface-type filters typically include relatively thin cellulosic or synthetic filter media that is folded in an accordion-like fashion to produce a plurality of pleats. Each pleat is typically made up of a pair of rectangular panels, with fold lines separating the panels.

In a cylindrical pleated filter element, the short sides of the rectangular panels of the pleats usually extend radially outwardly with respect to the axis of the filter element, and thus provide the radial height of the pleats, while the long sides of the rectangular panels of the pleats extend axially between ends of the filter element. The maximum number of full pleats (i.e., pleats that extend between the inner and outer diameters of the filter element) is determined by an inner circumference of the filter element divided by the thickness of the pleats.

Because of the radial geometry of the pleats in a cylindrical pleated filter element, however, there is a significant degree of spacing between outer tips of the pleats. In order to minimize the spacing between outer tips of the pleats, filter elements having larger inner diameters and, thus, shorter pleat heights have been used. Furthermore, spiral pleat filters and "W-pleat" filters have been developed in order to minimize pleat spacing and provide even more filtering surface area.

A W-pleat filter element is comparable to a standard pleated filter element in that it includes a plurality of longitudinal pleats disposed in a cylindrical configuration. The W-pleat filter element, however, also includes relatively short pleats extending radially inward from the outer periphery of the filter between the pleats I of standard height. The short pleats are the same height and arise at a uniform frequency about the circumference of the filter, i.e., there is one short pleat between every two full-length pleats. Examples of W-pleat filters can be found in U.S. Pat. Nos. 2,627,350 (1953) to Wicks; U.S. Pat. No. 3,002,861 (1962) to Harms; 3,799,354 (1974) to Buckman et al.; and German Patent No. 3,935,503 (1991) to Nick et al. Most W-pleat filters are made using cam-actuated pleating machines that only provide repetitive and uniform pleat patterns, resulting in short pleats of the same height and arising at a uniform frequency.

The US Patent No. 7491337 issued in favor of Karaman discloses an invention pertaining to a method and apparatus for removing contaminants from water wherein is provided a method and apparatus for the purification of water, in particular to the removal of surfactants and optionally organic, inorganic and/or biological contaminants from water using adsorption filtration techniques.

The US Patent No. 6582873 issued in favor of Jiang et al discloses an invention wherein is described a toner process including, for example, mixing a latex with a colorant wherein the latex contains resin and an ionic surfactant, and the colorant contains a surfactant and a colorant; adding a polyaluminum chloride; affecting aggregation by heating; adding a chelating component and a base wherein the base increases the pH of the formed aggregates; heating the resulting mixture to accomplish coalescence; and isolating the toner.

In US6132924 the disclosure of which is totally incorporated herein by reference, there is illustrated a process for the preparation of toner comprising mixing a colorant, a latex, and two coagulants, followed by aggregation and coalescence and wherein one of the coagulants may be polyaluminum chloride.

In US6268102 there is disclosed a process for the preparation of toner comprising mixing a colorant, a latex, and two coagulants, followed by aggregation and coalescence, and wherein one of the coagulants is a polyaluminum suifosilicate.

The US5994020 discloses an invention wherein the disclosure is a toner preparation processes, and more specifically, a process for the preparation of toner comprising: (i) preparing, or providing a colorant dispersion; (ii) preparing, or providing a functionalized wax dispersion comprised of a
functionalized wax contained in a dispersant mixture comprised of a nonionic surfactant, an ionic surfactant, or mixtures thereof; (iii) shearing the resulting mixture of the functionalized wax dispersion (ii) and the colorant dispersion (i) with a latex or emulsion blend comprised of resin contained in a mixture of an anionic surfactant and a nonionic surfactant; (iv) heating the resulting sheared blend of (iii) below about the glass transition temperature (Tg) of the resin particles; (v) optionally adding additional anionic surfactant to the resulting aggregated suspension of (iv) to prevent, or minimize additional particle growth of the resulting electrostatically bound toner size aggregates during coalescence (iv); (vi) heating the resulting mixture of (v) above about the Tg of the resin; and optionally, (vii) separating the toner particles; and a process for the preparation of toner comprising blending a latex emulsion containing resin, colorant, and a polymeric additive: adding an acid to achieve a pH of about 2 to about 4 for the resulting mixture; heating at a temperature about equal to, or about below the glass transition temperature (Tg) of the latex resin; optionally adding an ionic surfactant stabilizer; heating at a temperature about equal to, or about above about the Tg of the latex resin; and optionally cooling, isolating, washing, and drying the toner.

The US6315130 issued in favor of Olsen discloses an invention wherein is described a pleated filter element whose disclosure includes a plurality of longitudinally extending pleats including outwardly radiating primary pleats and inwardly radiating secondary pleats, with at least one secondary pleat positioned between two adjacent primary pleats. Each primary pleat has a predetermined radial height, and each secondary pleat has a radial height that is less than the radial height of each primary pleat and different from the radial height of at least one other secondary pleat. A filter element according to the present disclosure provides greater filter area, an increased overall filter density, and access to more radial flow paths at the outer diameter of the filter element.

The other document RU2326715 states the material for cartridge filter for water purification is proposed, which comprises the layers of the fibrous polymeric material with different packing compactness of interconnected microfibers in layers, formed at the porous frame and containing the sorbent particles in one of fibrous layers where the first layer along the purified water stream has the compactness of fiber packing to withhold the 10-20 micron particles; the second layer contains the sorbent particles and supplementary chemical reagents to transfer the ferrous iron in ferric iron, hydrolysis and coagulation of hydrolised forms, the third layer has the compactness of fiber packing to withhold the 5-20 mem particles; the fourth layer has the compactness of fiber packing to withhold the 1-2 mem particles; and the fifth layer comprises the fibrous bottom layer upon the porous frame. The method of preparation of the filter containing the invented sorption-filtering material is proposed.

The devices of the invention for cleaning of liquids, in particular, to the filters for the purification of drinking water, and it can be used in the food and medical industry. The task of utility model is the development of change filter cell for the effective removal from the water of the negatively charged particles, including of microbiological pollution, predominantly bacteria and viruses. Are Proposed two versions of cartridge filter cell, the first version of cartridge filter cell contains the perforated tube and the laminar filtering material formed around it, connected by end components, the filtering material, formed around the perforated tube in the form of cylindrical cylinder, is executed in the form 'the sandwich', whose lower and upper layers are the synthetic material, which freely passes water, between which is located the inner layer of sorption material on the basis of the fibrous sheet material of the organic or inorganic origin, modified by the nano-dimensional particles of hydrate of the oxide of aluminum, intended for the fine purification of water and removal of microorganisms from water, in this case inner layer is executed in the form the smooth tape, formed from many layers of sorption material. The Second version of cartridge filter cell contains the perforated tube and the laminar filtering material formed around it, connected by end components, the filtering material, formed around the perforated tube in the form of cylindrical cylinder, is executed in the form 'the sandwich', whose lower and upper layers are the synthetic non- woven material, which freely passes water, between which is located the inner layer of sorption material on the basis of the fibrous sheet material of the organic or inorganic origin, modified by the nano-dimensional particles of hydrate of the oxide of aluminum, intended for the fine purification of water and removal of microorganisms from water, in this case inner layer is executed in the form corrugated tape, formed from many layers of sorption material which has been described in the document RU60874.

The other document RU2240854 states the invention which is dealt with a field of separation of oil-water emulsions and purification of water, in particular, with installations used for purification of industrial, natural and waste waters from petroleum, oil products and mechanical impurities and for separation into the component materials of the stable emulsions. The installation contains: a cage; a vertical filtering member of a cartridge type with a cover, a bottom and a grid mounted between them; a central perforated pipe and a coaxially placed fibrous filtering material; a cavity for collection of the lubricated product and branch-pipes for feeding of an emulsion and a withdrawal of products of separation. The first on a course of a divided emulsion running layer of the filtering material is made out of a hydrophobic polymeric fiber in the form of a non-woven linen of a volumetric corrugated structure, and the second is made out of a
hydrophilic superfine basalt fibers. Ribs of the volumetric corrugated structure of the first layer are oriented along the central pipe and the cavity for collection of the lubricated product is placed under the cover of the filtering member. The invention allows to conduct efficiently agglomeration and separation of the finely dispersed particles of oil products at the stage of purification up to the level of maximum permissible concentration (MPC) and also from industrial waters and waste waters.

According to the document KR20020094450 directs a tap connection type water purifier employing antibiosis filter which has a good mobility and makes it possible to select purified or unpurified water by operating the valve lever of purifier and uses activated carbon fiber membrane that has superior adsorption efficiency for filter cartridge is provided to improve purification efficiency. The purifier comprises a body; a connection in which a flexible pipe is connected; a three way valve for controlling the current type of water as purified water or straight water and showering water; a filtering part in which filter cartridge is installed; an inlet for purified water and an inlet for straight water and showering water. The filter cartridge is composed of non- woven fabric layer for pretreatment , activated carbon fabric layer , silver adsorbed activated carbon layer, activated carbon fabric layer and non- woven fabric layer for post treatment.

The other document IL87157 a filter cartridge assembly incorporating a filter medium arranged between upper and lower pads of light, fluffy, loosely, packed fibrous matter comprising commingled, non- woven fibers of significant length relative to their diameter. The pads and filter medium are arranged within a cylindrical-shaped housing having top and bottom covers with openings sufficient to permit the free passage of both liquids and gases while substantially preventing the upper and lower pads from being dislodged from their operating positions under normal flow rate. The filter medium is preferably granulated carbon of a relatively fine grain size on the order of 20 x 50 mesh said filter medium being loosely packed in the housing. The filter layers are formed from flossy fibers. The upper and lower filter pads and filter medium extend over the entire inner diameter of the cartridge, which diameter is sufficiently large relative to the thickness of the cartridge so as to produce a small pressure drop at the rated flow nominal of fluid through the cartridge.

The document JP1115423 states a filter in which strings obtained by slitting a cellulose spun bonded non-woven fabric into strips and passing them through narrow holes to twist them are wound around a bobbin having a lot of drilled pores. It is considered that this method shall make it possible to prepare a filter having a higher mechanical strength and being free of dissolution in water and elution of a binder, as compared with a conventional roll tissue filter prepared by winding tissue paper in a roll form, which is produced from a-cellulose prepared by refining a coniferous pulp.

However, the cellulose spun bonded non-woven fabric used for this filter has a papery form and thus a too high rigidity, so that it is less expected to trap foreign matters by the filter material itself as is the case of a conventional bobbin winder type filter using spun yarns which traps foreign matters by means of fluffs. Further, the cellulose spun bonded non-woven fabric is liable to swell in a liquid due to its papery form. Swelling may bring about various problems such as a decrease in a filter strength, a change in a filtering accuracy, a deterioration in a liquid-passing property, a reduction in a filter life and the like. Adhesion at fiber intersections of the cellulose spun bonded non-woven fabric are mostly conducted by a certain chemical treatment. Such adhesion is often unsatisfactory, causing a change in a filtering accuracy or falling of fiber chips, so that a stable filtering performance is difficult to achieve.

Furthermore, another document JP445810 describes a filter prepared by winding a slit non-woven fabric comprising composite fibers in which 10% by weight or more of structural fibers is divided ones of 0.5 denier or less on a porous core cylinder to provide the fiber density of 0.18 to 0.30. This method is advantageously used to trap fine particles contained in a liquid by means of fibers having a high fineness. However, in order to divide the composite fibers, a stress needs to be applied using, for example, high-pressure water, and it is difficult to evenly divide the fibers all over the non-woven fabric by means of high-pressure water processing. If not evenly divided, there occurs a difference in a trapped particle diameter between a well-divided portion and an insufficiently divided portion of the non-woven fabric, and this may lower the filtering accuracy. Further, the stress applied for dividing sometimes lowers the strength of the non-woven fabric, and this may cause reduction of the resulting filter strength and frequent deformation of the filter during use; or possible change of the void ratio of the filter may reduce the liquid-passing property.

There is a large amount of activity in the general field of water purifiers and water purification systems. The prior art profile on the subject matter reveals the gradual improvement from initial devices targeting only separation of particulate impurities by following sedimentation and filtration, to modern day water purifiers and water purification systems addressing the problems of chemical contaminants and/or microbial as well as viral contaminants. The use of non-conventional filter materials to create filters and/or filter cartridges has often been put up as a probable viable alternative to improving the efficiency of water purification processes.

It is a known fact that, High quality drinking water is becoming scarce in many areas of the world. With little scope for expanding water supply catchments and increasing consumption, the purification of water is of great importance. The degree of water purification will depend on the extent to which the water is contaminated and the ultimate use of the water. Water intended for human or animal consumption and/or contact will require a higher degree of purification than water that is intended for the purpose of toilet flushing, laundry use, garden and agricultural irrigation, and industrial processes.

There exists a number of water treatment practices used to render contaminated water safe for human contact and/or consumption.

However, the above-mentioned filter cartridges have several defects. For example, in the bobbin winder-type filter cartridge for trapping foreign matters by means of fluffs of fluffed spun yarns and also in gaps of the spun yarns, it is difficult to control the size and form of the fluffs and gaps. This limits size and amount of the foreign matters that can be trapped.

With increasing awareness of safe drinking water there is a need based demand for quality water purifiers in India. The present invention described herewith deals with the design of the compact water purification cartridge for use in water purification systems and method of preparation for same.

It is a general object of the present invention to a non-woven fabric filter cartridge for water purification system in which the above-mentioned problems are eliminated.

Summary of the invention

The present invention relates to a non-woven fabric filter cartridge for water purification system. More particularly, the present invention relates to a non-woven fibrous media which may be utilized in drinking water purifiers that works on water supply fed through plumbing or gravity. Further this invention also relates to a non-woven fabric filter cartridge in which the variants include multilayers of pleated or flat Nonwoven media in various shape, size and configuration. Further this invention also relates to a method of preparing the non-woven fabric filter cartridge for water purification system. The water purification system with a non-woven fabric effectively purifying and neutralizing toxic gases such as odors, fumes or various volatile organic compounds generated by research laboratories, chemical processing factories or hospitals where medicinal products are handled.

Detailed description of the invention with accompanying drawings

A more complete understanding of the present invention and its attendant advantages and features thereof will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings.
It is therefore an object of the present invention to provide a non-woven fabric filter cartridge for water purification system.

The principal object of the present invention is to provide a non-woven fibrous media which may be utilized in drinking water purifiers that works on water supply fed through plumbing or gravity.

The other embodiment of the invention is to provide a non-woven fabric filter cartridge in which the variants include multilayers of pleated or flat nonwoven media in various shape, size and configuration.

The other embodiment of the invention is to provide water purification system with a non-woven fabric which effectively purifying and neutralizing toxic gases such as odors, fumes or various volatile organic compounds generated by research laboratories, chemical processing factories or hospitals where medicinal products are handled.

The other embodiment of the invention is to provide water purification system with a non-woven fabric in which on the usage of multiple purification stages at least two with different Nonwoven Filter media layer in an inventive pleated form. The pleated form (hereinafter called as "multi pleat") relies on two layers of nonwoven fabric first to filter out particulate matter, sediment and suspended solids in water, and later to trap microbes efficiently.

The other embodiment of the invention is to provide a non-woven fabric cartridge which is excellent in a liquid-passing property, a filter life and stability of a filtering accuracy.

Another embodiment of the present invention is to solve the problems described above. It has been found, as a result of investigations, that a non-woven fabric cartridge which is excellent in a liquid-passing property, a filter life and a stability of a filtering accuracy can be obtained by winding a long fiber non-woven fabric comprising fibers.

The other embodiment of the invention is to provide a water purification system that includes a lever-action handle for pumping water through the filter that is efficient, requires few parts, is more economic, and is less susceptible to breakdown.

The other embodiment of the invention is to provide non-woven fabric cartridge that is easily removable and economical to replace.

The other embodiment of the invention is its application water purification in combination with Ultraviolet, Reverse Osmosis, ultra filtration, nanofiltration resin treatment, to provide to a water purification system that requires only one person to operate.

The foregoing advantageous features will be described in detail and others will be made apparent from the following detailed description of a preferred embodiment of the invention that is given with reference to the several figures of the drawing.

The variants are categorized in two form depending on the process 1) Pleated Surface Variants and 2) Flat or Plane Surface Variants.

The Pleated Surface Variants are:

a) Cylindrical Pleated.
b) Rectangular / Square Pleated.
c) Horizontal.
d) Vertical.
e) Conical Pleated
f) Spiral Pleated

The Flat or Plane Variants are:
g) Rectangle / Square,
h) Cylindrical.
i) Spiral.

Figure 1 is a schematic depiction of the process of external features of the invention.

Figure 2 is a schematic depiction of the internal features in accordance with the present invention.

Figure 3 is a diagrammatic depiction of the working of the present invention in accordance with one of its preferred embodiment of working.

In one of the other contemplated embodiments of the present invention is that proprietary non-woven filtration media is pleated into an ingenuous form and rolled into a cartridge.

The limiting ends of the cartridge are sealed with end caps. At least one outlet is provided to facilitate the flow. The disclosed purification cartridge with various size and shape may be utilized in water purifiers that work on water fed through mains and storage containers, under gravity or pumped up pressure or suction, to provide enhanced purification performance. The increased performance can be judged by the increase in media area, improved clarity and higher throughput.

The multi pleat design minimizes design complexity and provides better economies of scale. It provides more surface area of nonwoven media for filtration compared to existing cartridges in identical space thus greatly increasing the flow rate and life of the product. It reduces the void space between the purification stages that acts as breeding ground for microbes in water. It reduces amount of plastics and glue which is used for structural strength of the cartridge and thus reducing the material consumption to produce and avoid shortages in high volume production.

The advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjugation with accompanying drawings and these drawings are illustrative in explaining the constructional details of the system of the invention. Such drawings are shown in sheets.

Although, a particular exemplary embodiment of the invention has been disclosed in detail for illustrative purposes, it will be recognized to those skilled in the art that numerous variations or modifications of the disclosed invention, including the rearrangement in the configuration of the scheduling aspects of the present invention as well as its method of use being amenable to modifications on account of emerging needs in different types of settings are possible.

Accordingly, the invention is intended to embrace all such alterations, modifications and variations as may fall within the spirit and scope of the present invention.

We claim:

1) A non-woven fabric filter cartridge for water purification system which comprises,

Non-woven filtration media is pleated into an ingenuous form and the limiting ends of the cartridge are sealed with end caps. At least one outlet is provided to facilitate the flow;

characterized in that the purification cartridge with various size and shape is utilized in water purification system that work on water fed through mains and storage containers, under gravity or pumped up with pressure or suction, alone or in combination with other water purification technologies to provide enhanced purification performance.

2) The non-woven fabric filter cartridge as claimed in claim 1 in which provides more surface area of nonwoven media for filtration compared to existing cartridges in identical space thus greatly increasing the flow rate and life of the product.

3) The non-woven fabric filter cartridge as claimed in claim 1 which reduces the void space between the purification stages that acts as breeding ground for microbes in water.

4) The non-woven fabric filter cartridge as claimed in claim 1 in which multi pleated forms of Nonwoven Filter media layer relies on two layers of nonwoven fabric first to filter out particulate matter, sediment and suspended solids in water, and later to trap microbes efficiently.

5) The non-woven fabric filter cartridge as claimed in claim 1 in which multilayers of pleated or flat Nonwoven media is in various shape, size and configuration.

6) The water purification system consisted with a non-woven fabric filter cartridge as claimed in claim 1.

7) A method of preparing the non-woven fabric filter cartridge for water purification system as claimed in claim 6.

8) The non-woven fabric filter cartridge where in substantially as hereinbefore described and illustrated with particular reference to the accompanying drawings.

9) The water purification system where in substantially as hereinbefore described and illustrated with particular reference to the accompanying drawings.

10) A method of preparing the non-woven fabric filter cartridge for water purification system as hereinbefore described and illustrated with particular reference to the accompanying drawings.