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WO2022086458A1 - Filtre industriel pour réduire la turbidité et les solides en suspension - Google Patents

Filtre industriel pour réduire la turbidité et les solides en suspension Download PDF

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Publication number
WO2022086458A1
WO2022086458A1 PCT/TR2020/050965 TR2020050965W WO2022086458A1 WO 2022086458 A1 WO2022086458 A1 WO 2022086458A1 TR 2020050965 W TR2020050965 W TR 2020050965W WO 2022086458 A1 WO2022086458 A1 WO 2022086458A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter apparatus
screen
woven fabric
filter screen
Prior art date
Application number
PCT/TR2020/050965
Other languages
English (en)
Inventor
Osman Oguz Tameroglu
Original Assignee
Antel Aritma Tesisleri Insaat Sanayi Ve Ticaret A.S.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Antel Aritma Tesisleri Insaat Sanayi Ve Ticaret A.S. filed Critical Antel Aritma Tesisleri Insaat Sanayi Ve Ticaret A.S.
Priority to PCT/TR2020/050965 priority Critical patent/WO2022086458A1/fr
Publication of WO2022086458A1 publication Critical patent/WO2022086458A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/23—Supported filter elements arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6438—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles
    • B01D29/6446—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles with a rotary movement with respect to the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6438—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles
    • B01D29/6461—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles with a combination of movements with respect to the filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B01D39/06—Inorganic material, e.g. asbestos fibres, glass beads or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B01D2239/0478—Surface coating material on a layer of the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0654—Support layers

Definitions

  • the present invention relates to a novel filter apparatus for the separation of very fine particles creating turbidity in water either suspending or forming a cake therein. More particularly, the present invention provides an industrial filter apparatus which carries out backwashing and effectively reduces turbidity and suspended solids inside an aqueous media. Further, the present invention presents methods for producing such a filter apparatus as well as further methods for carrying out filtration and converting existing industrial filters to the filter apparatus according to the present invention.
  • Filtration assemblies are commonly used in different areas such as well water applications, water treatment plants, swimming pools, cooling towers, manufacturing plants and supply of mains water. These filters mostly include a tubular filter screen having a certain mesh size depending on particle size of dirtiness and substances coming through the liquid. Therefore, these filters are expected to clean themselves periodically according to predetermined parameters such as pressure drop through the filter, or otherwise are cleaned manually by labour which is cumbersome and not feasible in the plants of industrial scale.
  • EP 3044165 Bl discloses a filter screen located in a filter housing, which is provided also with a combined nozzle and brush back-flush device for effectively removing dirtiness accumulated on inner surface of the filter screen.
  • EP 3110521 Bl discloses another type of an industrial filter for gradually screening of fine and coarse particles in a single system by using different filtration screens concentrically formed in a single filter body.
  • WO 2018/188934 Al discloses a method for a filter arrangement and a backwashing arrangement. This document is based on the principle of aligning a plurality of nozzles along a straight line such that they all project in the same direction in a back-washing arrangement, allowing for a more efficient backwashing of a folded filter and thereby an efficient backwashing of a compact filter.
  • the mechanical filters of the foregoing types being suitable for removing dirtiness up to a certain level, are still insufficient for reducing turbidity and very fine particles suspended in the liquid.
  • CA 2792609 provides a process and a backwash filter apparatus equipped with a filter fabric, as the filter material, having an air permeability of 700-1300 1/m 3 at pressure differential 200 Pa. There is, however, no information about specific type of the filter material which is important for backwash cleaning capacity of the filter after accumulation of the particles and dirtiness on its surface.
  • particles and agglomerates are absorbed/adsorbed through the texture of the filter material, and then backwashing is initiated automatically or manually for cleaning inner surface of the filter material.
  • the particles and cake forming agglomerates clogging the very fine pores of said filter material are removed usually with nozzles sucking said agglomerates and discharging the same in order to reduce the pressure drop (AP).
  • the present invention provides a filter apparatus (2) of industrial type for reducing turbidity and suspended solids in a liquid, comprising a filter housing (23), a filter screen (1) of hollow shape concentrically located in said filter housing (23), an inlet (21) for supplying liquid to be filtered on inner surface (14) of the filter screen (1), an outlet (22) cariying filtrated liquid out of the filter housing (23), and a backwash equipment(3) for cleaning the inner surface (14) ofthe filter screen (1).
  • the filter screen (1) comprises at least two screen layers (11, 11’) and a filter layer (13) disposed therebetween.
  • Said filter layer (13) is composed of a non-woven fabric which is made up by polymer or copolymer fibers.
  • the filter layer (13) made of a non-woven fabric has a density value between 200 and 1500 g/m 2 , and said non-woven fabric has a structure which is needle punched and surface modified with calendering before being disposed into the filter screen (1).
  • Density of the non-woven fabric is preferably at least 500 g/m 2 , and more preferably from 500 g/m 2 to 1500 g/m 2 .
  • Calendering of the filter material is quite important as it reduces pore sizes, thereby reducing permeability of the material for increasing filtration efficiency. More importantly, surface modification with calendering flattens the surface such that it can be more easily and quickly cleaned with the backwash equipment (3).
  • the calendering as mentioned herein can be carried out at a roller pressure of 2 to 1000 kPa, but best results were obtained at a roller pressure between 100 kPa and 1000 kPa.
  • the calendering is preferably carried out with he habring at a temperature between 100 °C and 250 °C.
  • both sides of the filter layer (13) is treated with calendering which advantageously improve filtration of very fine particles.
  • the filter layer (13) is also coated with a reinforcing polymer for improving agility and endurance thereof.
  • the fibers of the non-woven fabric in the filter material are made of polyester or polypropylene.
  • the polyester is preferably ethylene polyester (PET) or PCDT polyester. Polyester and derivatives thereof are preferred.
  • the filter layer (13) can be divided into two separate layers (13, 13’). For example, if the density of the non-woven fabric is determined as 1000 g/m 2 , it can be divided into two layers with SOO- SOO g/m 2 density values.
  • the filter screen (1) may further comprise at least one support layer (12, 12’, 12”) forming a mesh for supporting filter material of the filter layer (13).
  • each of said filter layer can be entrapped between two support layers (12, 12’, 12").
  • the support layer (12, 12’, 12”) comprises holes having dimensions less than those ofthe screen layers (11, 11’).
  • the filter screen (1) can be embodied with at least one further filter layer (13 ’) provided with activated carbon and/or sand.
  • the backwash equipment (3) may comprise a plurality of nozzles (31) disposed in close proximity to the inner surface (14) of the filter screen (1) and a collecting pipe (32) in fluid communication with said nozzles (31).
  • the collecting pipe (32) is connected to a discharge valve (26) such that a negative pressure is created in opening ends of the nozzles (31) for sucking dirtiness accumulated on said inner surface (14).
  • the filter apparatus (2) may also comprise an actuation unit (25) driven by a motor (24) for rotatably moving the collecting pipe (32) and nozzles (31).
  • the collecting pipe (32) is configured to have a helical movement along the inner surface (14) of the filter screen (1).
  • the filter apparatus (2) is advantageously configured to activate the backwash equipment (3) at a pressure drop level of adjustable values of AP such as AP 0.8 bar, more preferably AP ⁇ 0.4 bar.
  • a control unit (not shown) detecting the fluid pressure at the inlet (21) and at the outlet (22), and determining the pressure drop (AP) can be provided to actuate the backwash equipment (3). This can be, for instance, by actuation of the motor (24) for rotating the collecting pipe (32) having nozzles (31) and opening of the discharge valve (26).
  • the present invention provides a method for filtrating a liquid containing fine particles comprising the steps of: providing a filter apparatus (2) as explained above, supplying the liquid to be filtered through the inlet (21) of the filter apparatus (2) and filtrating the liquid through the filter screen (1) followed by discharging the filtrated liquid through the outlet (22), measuring the pressure difference between inlet (21) and outlet (22) of the filter apparatus (2), and activating the backwash equipment (3) once the pressure difference reaches to a predetermined value.
  • the present invention provides a method for producing a filter apparatus (2) as defined above, comprising the steps of: providing a filter housing (23) having an inlet (21) and outlet (22), providing a filter screen (1) and a backwash equipment (3) for cleaning the inner surface (14) of the filter screen (1), wherein the filter screen (1) comprises at least two screen layers (11, 11’) and a filter layer (13) disposed therebetween, and said filter layer (13) is composed ofa non-woven fabric which is made up by polymer or copolymer fibers, whereby, the filter layer (13) made of a non-woven fabric has a density value between 200 and 1500 g/m 2 , and said non-woven fabric has a structure which is needle punched and surface modified with calendering before being disposed into the filter screen (1), mounting said filter screen (1) concentrically into the filter housing (23).
  • the present invention provides a method for converting an industrial filter apparatus having a filter housing with an inlet and outlet, a filter screen and a backwash equipment, to a filter apparatus (2) according to the present invention, comprising the steps of: replacing the filter screen of the filter apparatus with a filter screen (1) comprising at least two screen layers (11, 11’) and a filter layer (13) disposed therebetween, and said filter layer (13) is composed of a non-woven fabric which is made up by polymer or copolymer fibers, whereby, the filter layer (13) made of a non-woven fabric has a density value between 200 and 1500 g/m 2 , and said non-woven fabric has a structure which is needle punched and surface modified with calendering before being disposed into the filter screen (1).
  • the present invention provides a novel use of the filter apparatus (2) according to the present invention in treatment of a liquid in a drinking water treatment plant, biomass energy plant, mineral water bottling plant, tire production plant, metal pipe and profile production plant, well water filtration, and tap water filtration.
  • the liquid to be filtered can be a washing, cooling or even drinking water used in these applications .
  • domestic use is possible by the use of the filter apparatus (2) in conventional buildings for improving quality of tap water.
  • Figure 1 is a general view of a structure of the filter apparatus (2) comprising a filter screen (1) according to the present invention.
  • Figure 2 provides a detailed view of the filter screen (1) and filter apparatus (2) according to the present invention.
  • Figures 3 a and 3b show cross-sectional view (Section A- A) of a nozzle (31) according to a preferred embodiment of the present invention.
  • a filter apparatus (2) of this type typically comprises an inlet (21) and outlet (22), a filter housing (23) accommodating the filter screen (1) and backwash equipment (3).
  • the filter apparatus (2) may further comprise a motor (24) and an actuation unit (25) for driving of the backwash equipment (3).
  • the performance of the filter apparatus (2) designed for filtration of veiy fine particles might be seriously affected by the filter material, especially the type of said filter material as well as density and surface characteristics thereof.
  • the material, permeability and surface characteristics of the filter structure are noted to be determining the quality of the water, pressure drop (AP) profile during filtration, and more importantly cleaning performance of the backwash equipment
  • the present invention provides a high performance filter screen (1) and a filter apparatus (2) comprising the same which is capable of carrying out deep filtration and advantageous in terms of operation.
  • the filter screen (1) used in the filter apparatus (2) comprises various layers depending on specific needs of the application area.
  • “Detail A” shows details of said layers comprising at least one filter layer (13) disposed inbetween two screen layers (11, 11’).
  • the filter layer (13, 13’) is composed of a non-woven fabric, as explained in greater detail hereinbelow.
  • non-woven fabric refers to a fibrous material which is not knitted as conventionally known, and is made of a polymer or copolymer, for instance, polypropylene (PP) or polyester.
  • the filter material is made of polyester which is found to be advantageous as it is cost effective, having good absorption/adsorption properties, being durable and capable of being easily cleaned in backwashing.
  • the polyester material is preferably composed of staple fibers.
  • Said polyester can be of the type, for instance, ethylene polyester (PET) or PCDT polyester.
  • the density of the non-woven fabric plays an important role in determining permeability of the filter which in turn affects the level of turbidity and total suspended solids as well as the pressure profile throughout the filter apparatus. It also affects performance of the filter in removing very fine particles.
  • the inventor has also found out that the density of the non-woven filter material may advantageously be adjusted to a value between 200 and 1500g/m 2 .
  • a density value of at least 500 g/m 2 has provided advantageous results such that turbidity and total suspended solids in water are substantially eliminated with a deep filtration while pressure drop (AP) of the filter apparatus is kept at optimum. Additionally, this effect is observed up until 1500 g/m 2 with excellent results in filtration.
  • a lower density value of 200-400 g/cm 2 was useful and advantageous for treatment of water with lower amount of fine particles such as mains water, and it can be easily cleaned with conventional backwash equipment.
  • the non-woven fabric is needle punched for improving permeability of the filter material.
  • This specific form of the fabric helps the liquid to pass through the filter material without causing a higher pressure drop.
  • the pore size is reduced as explained below.
  • the non-woven fabric as the filter material serves for collection of small and big size particles and agglomerates on its surface. A certain fraction of said particles and agglomerates penetrate through the pores in texture of the filter material. It is important to revert them with negative pressure during backwashing procedure for regeneration of the filter and eliminate the pressure drop (AP). Very fine particles, however, are prone to remain in texture of the filter material even if a strong negative pressure is applied through the fabric surface. This problem shortens the service life of the filter material which in turn lowers the filter performance and necessitate replacement of the filter screen. In order to solve this problem, the inventor made trials with different surface characteristics and noted that a calendering treatment of the non-woven fabric ensures better cleaning properties in backwashing.
  • Calendering can be applied to one or both sides of the flattened filter layer (13).
  • both sides of the filter layer (13) is treated with calendering which advantageously improve filtration of very fine particles.
  • the filter layer (13) is also coated with a reinforcing polymer for improving agility and endurance thereof. Coating is preferably applied prior to calendering. Reinforcing polymer is applied to the surface of the filter layer (13) as a hot melt at a high temperature (ca. 400 °C). Said polymer may, for instance, be selected from the group consisting of PE, PP and PVC. It was observed that coating of only one surface of the filter layer (13) is generally sufficient even at high pressure values inside the filter apparatus (2).
  • the calendering process is carried out at a roller pressure of 2 to 1000 kPa, which is more preferably between 100 kPa and 1000 kPa.
  • the calendering process is preferably carried out along with finishing heat tentering at a temperature between 100 °C and 250 °C.
  • the calendering process changes density and stiffness besides the surface characteristics. Therefore, the density value wherever it appears along with calendering is indeed the density of the raw non-woven fabric before treatment with rollers of the calendering step.
  • the screen layers (11, 11’) of the filter screen (1) can be determined depending on chemical and physical properties of the fluids to be filtered.
  • the material of said screen layers (11, 11’) can be selected from carbon steel, all types of stainless steel, duplex, super duplex, bronze, GRP, or polymer structures.
  • the filter screen (1) according to the present invention may further comprise one or more support layer (12, 12’) in the form of a mesh for supporting filter material of the filter layer (13).
  • the support layer (12, 12’) is preferably provided with a thickness less than that ofthe screen layers (11, 11’).
  • the size ofthe holes on the support layer (12, 12’) is less than the size of the holes on the screen layers (11, 11’).
  • the filter screen (1) according to the present invention further comprises at least one further filter layer (13’) which can be made of the same or a different material than the filter layer (13) explained above. If the filter layers (13, 13’) are made of the same material, i.e. non-woven fabric, the desired density of the material can be divided and apportioned to these two layers. For instance, instead of using a single filter layer (13) with a density of 1000 g/cm 2 , two filter layers (13, 13’) with 500 - 500 g/cm 2 density values can be used in the filter screen (1). Both layers (13, 13’) can be separated by a support layer (12").
  • This embodiment is advantageous particularly if the liquid to be filtered contains very fine particles easily penetrating through the filter material which can hardly be removed in backwashing. Deep penetration of very fine particles is thereby interrupted inbetween the both layers (13, 13’). It is also advantageous to divide a thick filter material into two thinner layers with support layers (12, 12’, 12”) as they may then be more rigidly withstand against high pressure of the fluid inside the filter. Therefore, the second filter layer (13’) may preferably be supported by an additional support layer (12’, 12”).
  • the second filter layer (13’) can be provided with a different material such as activated carbon and/or sand.
  • a different material such as activated carbon and/or sand.
  • the second filter layer (13’) is provided with activated carbon.
  • the second filter layer (13’) is provided with sand, such as a sand pack.
  • the second filter layer (13’) is provided with activated carbon and sand either as a mixture or separate layers.
  • the filter screen (1) as explained above is placed into a filter apparatus (2) having an inlet (21) and outlet (22).
  • the liquid to be filtered enters into the filter apparatus (2) through the inlet (21) and then passes through the filter material(s) of the filter layer(s) (13, 13’) whereby the liquid is treated with deep filtration in order to reduce turbidity and leaving suspended solids/agglomerates on the filter material.
  • backwash equipment (3) is activated with an actuation unit (25) driven by a motor (24).
  • the backwash equipment (3) comprises a plurality of nozzles (31) in fluid communication with a collecting pipe (32) which in turn is connected to a discharge valve (26), preferably on the bottom side of the filter apparatus (2).
  • a negative pressure is applied on the nozzles (31) such that the dirtiness accumulated on the filter layer (13) is eradicated with vacuum and is discharged by means of the collecting pipe (32) and the discharge valve (26).
  • the backwash equipment (3) may also comprise auxiliary brushes (not shown) as disclosed in EP 3044165 Bl for effectively scratchingthe dirtiness adhered on the filter layer (13).
  • the nozzles (31) as used in the backwash equipment (3) has a specific structure as shown in Figures 3a and 3b. Accordingly, the nozzles (31) having a tubular body have a sucking end portion (312) and a narrowing portion (311) which has a cross-sectional area smaller than that of said sucking end portion (312). With this specific arrangement, the negative pressure at the sucking end portion (312) increases which eventually causes a stronger suction capability and better cleaning performance over the filter material. This also ensures less amount of drainage liquid to be discharged from the filter apparatus (2).
  • Filter screens used in the test sites were prepared with filter material of the following types:
  • Two filter apparatus prepared with Type-1 and Type-2 filter materials were skid mounted in a water treatment plant supplying mains water to the city whereby dam water is processed with aeration - agitation - settling - sand filtration - final disinfection.
  • the dirty water used for backwashing of the sands was treated with the filters prepared for the tests. Effluent of the sand backwashing process was connected to the inlet of the filter apparatus.
  • a filter apparatus prepared with Type-1 filter material was skid mounted in a Biomass Energy generating plant using of well water whereby said well water is normally treated with Turbidex - softening and further treatment steps.
  • the filter apparatus was connected to treat raw well water.
  • the filter apparatus has been designed to work at 100 m 3 /h and 5 bar. Samples were taken at the inlet, outlet and drainage line of the filter apparatus. Turbidity (NTU) and Total Suspended Solids (TSS) were measured at various times of the operation as shown in Table 5.
  • NTU Turbidity
  • TSS Total Suspended Solids
  • a filter apparatus prepared with Type-1 filter material was skid mounted in a mineral water bottling plant.
  • the filter apparatus was mounted to treat mineral water.
  • the filter apparatus has been designed to work at 7 m 3 /h.
  • Samples were taken at the inlet, outlet and drainage line of the filter apparatus.
  • Turbidity [NTU] and Total Suspended Solids [TSS] were measured at various times of the operation as shown in Table 6, and surprisingly, mineral water which normally appeared very clear at first sight gave very dirty liquid in the drainage line connected to the backwash equipment
  • a filter apparatus prepared with Type-1 filter material was skid mounted to the cooling water of the extruder line of a tire company.
  • the filter apparatus has been designed to work at 7 m 3 /h. Samples were taken at the inlet, outlet and drainage line of the filter apparatus. Turbidity [NTU] and Total Suspended Solids [TSS] were measured at various times of the operation as shown in Table 7. Table 7
  • a filter apparatus prepared with Type-1 filter material was skid mounted in a cleaning water supply system used for washing of pipes and metal profiles produced in a metal factory.
  • the production plant was comprising a process having sections of: product washing - drum filter - FeCh dosing in water tank - settling tank - water tank.
  • the dirty water accumulated in the water tank was treated with the filter prepared for the tests.
  • Water to be filtered was fed to the filter apparatus with a flow rate of 2 m 3 /h. Samples were taken at the inlet and outlet of the filter apparatus. Turbidity (NTU) and Total Suspended Solids (TSS) were measured as shown in Table 8.
  • a filter apparatus prepared with Type-1 filter material was skid mounted to a water pipeline of a well at a flow rate of 20-25 m 3 /h. Turbidity (NTU) and Total Suspended Solids (TSS) were measured as shown in Table 10.
  • the filter material was easily cleaned with backwash equipment of the filter apparatus within a short period in order and AP was brought to the desired level ( ⁇ 0.1 bar).
  • the filters provided highest efficiency when AP ⁇ 0.8 bar, and more particularly when AP ⁇ 0.4 bar.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Filtering Materials (AREA)

Abstract

La présente invention concerne un appareil de filtration (2) de type industriel pour réduire la turbidité et les solides en suspension dans un liquide, comprenant un boîtier de filtre (23), un tamis filtrant (1) de forme creuse disposée de manière concentrique dans ledit boîtier de filtre (23), une entrée (21) pour fournir du liquide à filtrer sur la surface interne (14) du tamis filtrant (1), une sortie (22) transportant le liquide filtré hors du boîtier de filtre (23), et un équipement de lavage à contre-courant (3) pour nettoyer la surface interne (14) du tamis filtrant (1). Le tamis filtrant (1) comprend au moins deux couches de tamis (11, 11') et une couche filtrante (13) disposée entre celles-ci, et ladite couche filtrante (13) est composée d'un non-tissé qui est constitué de fibres de polymère ou de copolymère. La couche filtrante (13) constitué d'un tissu non tissé ayant une valeur de densité comprise entre 200 et 1500 g/m2, et ledit tissu non tissé a une structure qui est aiguilletée et modifiée en surface par calandrage avant d'être disposée dans le tamis filtrant.
PCT/TR2020/050965 2020-10-20 2020-10-20 Filtre industriel pour réduire la turbidité et les solides en suspension WO2022086458A1 (fr)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001012293A1 (fr) * 1999-08-11 2001-02-22 Odis Irrigation Equipment Ltd. Appareil de filtrage continu pour liquides, presentant un element de filtrage fritte a plusieurs couches qui est pourvu d'un systeme d'autonettoyage electromecanique
US20040083697A1 (en) * 2002-11-01 2004-05-06 Niakin Shahriar Nick High capacity hybrid multi-layer automotive air filter
CA2792609A1 (fr) 2010-03-12 2011-09-15 Lenzing Technik Gmbh Procede de filtration de fluides, ainsi qu'appareil de filtration pour la mise en oeuvre du procede
WO2011133394A1 (fr) * 2010-04-22 2011-10-27 3M Innovative Properties Company Voiles de nanofibres non tissés contenant des matières particulaires chimiquement actives et leurs procédés de fabrication et d'utilisation
EP3110521B1 (fr) 2014-02-28 2017-12-20 ANTEL Aritma Tesisleri Insaat Sanay Ve Ticaret Anonimim Sirketi Ensemble de filtration pour criblage progressif de particules fines et grosses dans une unité de fonctionnement simple
EP3044165B1 (fr) 2013-09-12 2017-12-27 ANTEL Aritma Tesisleri Insaat Sanay Ve Ticaret Anonimim Sirketi Filtre de nettoyage automatique de brosse de tuyère ayant un motoréducteur
WO2018188934A1 (fr) 2017-04-11 2018-10-18 Mosshydro As Filtre à eau
WO2019017747A1 (fr) * 2017-07-21 2019-01-24 주식회사 아모그린텍 Appareil de dessalement d'eau de mer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001012293A1 (fr) * 1999-08-11 2001-02-22 Odis Irrigation Equipment Ltd. Appareil de filtrage continu pour liquides, presentant un element de filtrage fritte a plusieurs couches qui est pourvu d'un systeme d'autonettoyage electromecanique
US20040083697A1 (en) * 2002-11-01 2004-05-06 Niakin Shahriar Nick High capacity hybrid multi-layer automotive air filter
CA2792609A1 (fr) 2010-03-12 2011-09-15 Lenzing Technik Gmbh Procede de filtration de fluides, ainsi qu'appareil de filtration pour la mise en oeuvre du procede
WO2011133394A1 (fr) * 2010-04-22 2011-10-27 3M Innovative Properties Company Voiles de nanofibres non tissés contenant des matières particulaires chimiquement actives et leurs procédés de fabrication et d'utilisation
EP3044165B1 (fr) 2013-09-12 2017-12-27 ANTEL Aritma Tesisleri Insaat Sanay Ve Ticaret Anonimim Sirketi Filtre de nettoyage automatique de brosse de tuyère ayant un motoréducteur
EP3110521B1 (fr) 2014-02-28 2017-12-20 ANTEL Aritma Tesisleri Insaat Sanay Ve Ticaret Anonimim Sirketi Ensemble de filtration pour criblage progressif de particules fines et grosses dans une unité de fonctionnement simple
WO2018188934A1 (fr) 2017-04-11 2018-10-18 Mosshydro As Filtre à eau
WO2019017747A1 (fr) * 2017-07-21 2019-01-24 주식회사 아모그린텍 Appareil de dessalement d'eau de mer

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