CN102120651A - Filter element used for sewage purification and sewage purification device with same - Google Patents

Filter element used for sewage purification and sewage purification device with same Download PDF

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Publication number
CN102120651A
CN102120651A CN 201110028022 CN201110028022A CN102120651A CN 102120651 A CN102120651 A CN 102120651A CN 201110028022 CN201110028022 CN 201110028022 CN 201110028022 A CN201110028022 A CN 201110028022A CN 102120651 A CN102120651 A CN 102120651A
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filter
inner core
water purification
filtering
sump
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CN 201110028022
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CN102120651B (en
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郭大磊
孙玉华
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Jiangxi aidisheng biopolymer material Co.,Ltd.
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Huake Institute of Bio-polymeric Materials Kunshan Industrial Technology Resear
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Abstract

The invention relates to a filter element used for sewage purification and a sewage purification device with same. The filter element of the invention contains a cylindrical inner core, a filtering unit which is arranged on the periphery of the inner core and used to filter sewage, and a filter element shell which is arranged on the periphery of the filtering unit, wherein the filtering unit contains a filtering membrane, filtering beads and a natural nonmetallic mineral material; the filtering membrane extends along the length direction of the inner core, is arranged along the circumference of the inner core in a switchback manner and is between the inner wall of the shell and the outer wall of the inner core; and the filtering beads and a natural nonmetallic mineral material are filled between the filtering membrane and the filter element shell and inner core. As the filtering membrane adopts the switchback manner, the filtering surface area of the filter element is greatly increased and the filtration efficiency of the filter element is increased; and the filtering beads and natural nonmetallic mineral material are used to support and shape the filtering membrane and ensure that the water filtered by the filter element has better water quality. By adopting the sewage purification device containing the filter element of the invention, the purification efficiency of sewage can be increased, the equipment can be simplified and the space and cost can be saved.

Description

Be used for the filter core of sewage purification and contain the effluent treatment plant of this filter core
Technical field
The present invention relates to a kind of effluent treatment plant that is used for the filter core of sewage purification and contains this filter core.
Background technology
Along with industrial progress and social development, water pollutes and also is on the rise, and a No.1 environmental improvement difficult problem becomes international.Water pollutes and mainly comprises industrial pollution, agricultural pollution and domestic pollution three classes, and industrial pollution is the primary pollution source that water pollutes.At present the plant efficiency handled of industrial sewage is low, and floor space is big, complex structure, and long-time maintenance and the cleaning trouble of using back equipment, and manufacturing and maintenance cost are also high, thereby the scope of penetration and promotion is restricted.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, and a kind of improved filter core that is used for sewage purification is provided, and its filter membrane surface is long-pending big, the filtration efficiency height;
The present invention also provides a kind of effluent treatment plant that contains this filter core, its wastewater purification efficiency height, and simple and compact for structure, floor space is little.
For solving above technical problem, the technical scheme that the present invention takes is:
A kind of filter core that is used for sewage purification, the tubular inner core that comprises at least one end opening, be around in the inner core periphery and be used for filter case that sewage is carried out filtering filtering unit and is around in the filtering unit periphery, filtering unit comprise along the length direction of inner core extend and between the outer wall of the inwall of shell and inner core along turn back the back and forth filtering membrane of setting of the circumferential direction of inner core, the inwall of this filtering membrane and shell surrounds along equally distributed a plurality of first filter chambers of the circumferential direction of shell, and the outer wall of this filtering membrane and inner core surrounds along equally distributed a plurality of second filter chambers of the circumferential direction of inner core, and described filtering unit also comprises the filter pearl that is filled in a plurality of first filter chambers and is filled in the natural nonmetallic mineral material of a plurality of second filter chambers.
Preferably, filtering membrane is spliced along the circumferential direction of the inner core membrane module that is provided with of turning back back and forth between the outer wall of the inwall of shell and inner core by polylith, described filtering unit also comprises a plurality of coupling devices that extend and be used for the adjacent membranes assembly is stitched together along the length direction of inner core, this coupling device comprises the outer bar of the clamping with the draw-in groove that runs through self length direction, can be clamped on bar in the clamping in the draw-in groove, the edge part along the extension of length of inner core direction of adjacent two membrane modules can be wound on and snap in the splicing that realizes in the draw-in groove between the membrane module in the clamping on the bar and by bar in the clamping.
Preferably, be lining in the sorbing material by second filter chamber, one side of filtering membrane in filtering unit also comprises, and this sorbing material is non-woven fabrics or polyglutamic acid adsorption film.
Preferably, filtering membrane can for the aperture at polyvinylidene fluoride film between 0.03~0.45 micron or aperture the poly tetrafluoroethylene between 0.4~2.0 micron.
Preferably, the filter pearl is the plastic pellet of particle diameter between 2~4 millimeters.
Preferably, natural nonmetallic mineral material is one or more the mixture in gac, active zeolite, attapulgite, the fetters stone.
A kind of effluent treatment plant that contains above-mentioned filter core comprises sump, water purification output tube, and filter core is arranged on the inside of sump, and the inner core of filter core is inner to form the water purification passage that supplies water and pass through, and the water purification passage is connected with the water purification output tube.
Preferably, filter core is horizontally set in the sump along self direction of axis line rotationally, one end of filter core has totally-enclosed fluid-tight first end face, offer second end face of pure water inlet in the middle part of the other end has according to water purification passage correspondence, the water purification output tube can be connected with second end face at the pure water inlet place with relatively rotating; This effluent treatment plant also comprise be fixedly connected with first end face and along self direction of axis line be horizontally set on rotation axis on the sump rotationally, drive motor that rotation axis rotates, clean water tank and be connected with the water purification output tube is used for the water purification Send out pump with the water suction clean water tank in the water purification passage.
Preferably, this effluent treatment plant comprises also that an end is connected with clean water tank, the other end is connected with the water purification passage and is used for the backwashing pump that the suspended substance a part of water in the clean water tank being drawn back in the water purification passage and can hold back filtering unit or large particulate matter wash, and the back flushing control device that an end links to each other with backwashing pump, the other end links to each other with water purification Send out pump or water purification output tube; This back flushing control device can or cut out according to the unlatching of the flow feedback control backwashing pump of the pressure feedback of water purification Send out pump or water purification output tube.
Preferably, the sump bottom has sludge outlet, described effluent treatment plant also comprises the sludge pump that is used for the mud of sump bottom deposit is extracted out of being connected with sludge outlet, being connected with sludge pump is used for the pressure filter that the mud to the sludge pump extraction carries out press filtration, this pressure filter has two outlets, one of them is connected with the mud bucket that receives sludge residue, and another is connected with sump pump so that the water of press filtration gained can be drawn back to sump again purifies.
By the enforcement of above technical scheme, the effluent treatment plant that makes filter core of the present invention and contain this filter core compared with prior art has plurality of advantages:
The present invention is used for the filter core of sewage purification, because its filtering unit comprises along turn back back and forth between the outer wall of the inwall of shell and the inner core filtering membrane of setting of the circumferential direction of inner core, make the surface-area of the common filter element filtering film of surface area ratio of filtering membrane greatly increase, improved the filtration efficiency of filter core; And be filled in the shell of filtering membrane and filter core and filter pearl between the inner core and natural nonmetallic mineral material, can not only play the supporting and shaping effect to filtering membrane, sewage is filtered through multiple tracks, and suspended substance in the elimination sewage and objectionable impurities make the water quality of filtering gained water better; The present invention contains the effluent treatment plant of above-mentioned filter core when improving wastewater purification efficiency, also can the simplified apparatus structure.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing and concrete embodiment:
Fig. 1 looks synoptic diagram for the master of filter core of the present invention;
Fig. 2 is the A-A sectional structure synoptic diagram of Fig. 1;
Fig. 3 is the enlarged view at C position among Fig. 2;
Fig. 4 is the coupling device structural representation;
Fig. 5 is the structural representation of effluent treatment plant of the present invention;
Wherein: 1, inner core; 10, water purification passage; 2, shell; 3, filtering membrane; 30, membrane module; 4, filter pearl; 5, natural nonmetallic mineral material; 6, sorbing material; 7, coupling device; 70, the outer bar of clamping; 71, bar in the clamping; 8, first end face; 9, second end face; 11, sump; 12, rotation axis; 13, motor; 14, water purification output tube; 15, clean water tank; 16, water purification Send out pump; 17, backwashing pump; 18, back flushing control device; 19, sludge pump; 20, pressure filter; 21, mud bucket; 22, sump pump.
Embodiment
The present invention will be further described in detail below in conjunction with specific embodiment, but be not limited to these embodiment.
Embodiment 1
As Fig. 1,2, shown in 3 and 4, the tubular inner core 1 that comprises an end opening according to the filter core that is used for sewage purification of present embodiment, be around in inner core 1 periphery and be used for filter case 2 that sewage is carried out filtering filtering unit and is around in the filtering unit periphery, this filtering unit comprise along the length direction of inner core 1 extend and between the outer wall of the inwall of shell 2 and inner core 1 along turn back the back and forth filtering membrane 3 of setting of the circumferential direction of inner core 1, filtering membrane 3 surrounds along equally distributed a plurality of first filter chambers of the circumferential direction of shell 2 with the inwall of shell 2, filtering membrane 3 surrounds along equally distributed a plurality of second filter chambers of the circumferential direction of inner core 1 with the outer wall of inner core 1, fill up in these a plurality of first filter chambers in filter pearl 4, the second filter chambers and fill up natural nonmetallic mineral material 5.
According to present embodiment, filtering membrane 3 is spliced along the circumferential direction of inner core 1 membrane module 30 that is provided with of turning back back and forth between the outer wall of the inwall of shell 2 and inner core 1 by polylith, this filtering unit also comprises a plurality of coupling devices 7 that extend and be used for adjacent membranes assembly 30 is stitched together along the length direction of inner core 1, coupling device 7 comprises the outer bar 70 of the clamping with the draw-in groove that runs through self length direction, can be clamped on bar 71 in the clamping in the draw-in groove, the edge part along the extension of inner core 1 length direction of adjacent two membrane modules 30 can be wound on and snap in the splicing that realizes in the draw-in groove between the membrane module 30 in the clamping on the bar 71 and by bar in the clamping 71.Adopt this weldless channel bar interface arrangment, compare, can make the utilization ratio of mould material improve 1.3~1.5 times with traditional welding symphysis connection technology.
According to present embodiment, be lining in the sorbing material 6 near second filter chamber, one side of filtering membrane 3 in filtering unit also comprises, and according to the different requirements to sewage purification, sorbing material 6 also can be different.For example, sorbing material 6 can be a non-woven fabrics, and it mainly is to use as the inner protective layer of filtering membrane 3; When containing more heavy metal ion in the sewage, sorbing material 6 can change the polyglutamic acid adsorption film into, and it has extremely strong complex ability to heavy metal ion in the sewage and radioelement, can be well with they filterings.
In the present embodiment, filtering membrane 3 can for the aperture at polyvinylidene fluoride (PVDF) ultrafiltration membrane between 0.03~0.45 micron or aperture the tetrafluoroethylene microfiltration membrane between 0.4~2.0 micron.Filtering membrane 3 itself should have certain intensity and toughness, can be converted into desired shape.
Filter pearl 4 is the plastic pellet of particle diameter between 2~4 millimeters, can be vinyon particle or urethane foam particle etc., and filter pearl 4 itself does not have adsorption function, and main rising filtered and supporting role, and sewage passes through from the slit between the filter pearl 4.
Natural nonmetallic mineral material 5 is one or more the mixture in gac, active zeolite, attapulgite, the fetters stone, can go into second filter chamber with natural nonmetallic mineral material 5 is canned, also can sinter natural nonmetallic mineral material 5 into piece earlier and insert second filter chamber again.Natural nonmetallic mineral material 5 has the structure of similar molecular sieve, heterochromatic smell substance and part heavy metal ion in can adsorption filtration sewage, when adopting present embodiment filter element filtering sewage simultaneously, under certain pressure, 5 pairs of filtering membranes 3 of natural nonmetallic mineral material also can play the effect of supporting and finalizing the design.
Embodiment 2
As shown in Figure 5, contain filter core among the embodiment 1 according to the effluent treatment plant of present embodiment, the effluent treatment plant of present embodiment comprises sump 11, water purification output tube 14, filter core is arranged on the inside of sump 11, the water purification path 10 (shown in Figure 2) that the inner core 1 inner formation of filter core is supplied water and passed through, and the water purification path 10 is connected with water purification output tube 14.
In the present embodiment, filter core is horizontally set in the sump 11 rotationally along self direction of axis line, one end of filter core has totally-enclosed fluid-tight first end face 8, offer second end face 9 of pure water inlet in the middle part of the other end has according to water purification path 10 correspondence, water purification output tube 14 can be connected with second end face 9 at the pure water inlet place with relatively rotating; The effluent treatment plant of present embodiment also comprise be fixedly connected with first end face 8 and along self direction of axis line be horizontally set on rotation axis 12 on the sump 11 rotationally, drive motor 13 that rotation axis 12 rotates, clean water tank 15 and be connected with water purification output tube 14 is used for the water purification Send out pump 16 with the water suction clean water tank 15 in the water purification path 10.
In the present embodiment, effluent treatment plant also comprises backwashing pump 17, backwashing pump 17 1 ends are connected with clean water tank 15, the other end is connected with the water purification path 10, it can be drawn back a part of water in the clean water tank 15 in the water purification path 10 and with it and be depressed into outside the filter core from the water purification path 10, and then suspended substance or the large particulate matter that filtering unit is held back carried out back flushing, use and stop up in case filter core is long-time; In addition, also be provided with back flushing control device 18 between backwashing pump 17 and water purification Send out pump 16 or water purification output tube 14, back flushing control device 18 can or cut out according to the unlatching of the flow feedback control backwashing pump 17 of the pressure feedback of water purification Send out pump 16 or water purification output tube 14.If the signal feedback of back flushing control device 18 is a pressure feedback, then when the pressure of water purification Send out pump 16 during greater than certain value, startup backwashing pump 17 is closed water purification Send out pump 16 simultaneously, and filter core is carried out back flushing; If the signal feedback of back flushing control device 18 is the flow feedback, then when the flow of water purification output tube 14 during less than certain value, startup backwashing pump 17 is closed water purification Send out pump 16 simultaneously, and filter core is carried out back flushing.
According to present embodiment, sump 11 bottoms have sludge outlet, this effluent treatment plant also comprises the sludge pump 19 that is used for the mud of sump 11 bottom deposits is extracted out of being connected with sludge outlet, being connected with sludge pump 19 is used for the pressure filter 20 that the mud to sludge pump 19 extractions carries out press filtration, pressure filter 20 has two outlets, one of them is connected with the mud bucket 21 that receives sludge residue, and another is connected with sump pump 22 so that the water of press filtration gained can be drawn back to sump 11 again purifies.
Principle of work according to the effluent treatment plant of present embodiment is as follows:
At first in sump 11, add sewage, make the liquid level of sewage be higher than filter core; Start motor 13 and water purification Send out pump 16, motor 13 drives rotation axis 12 and rotates, rotation axis 12 drives filter core along self direction of axis line rotation, 16 of water purification Send out pumps provide a malleation for filter core, make sewage arrive the water purification path 10 via filter case 2, filter pearl 4, filtering membrane 3, sorbing material 6, natural nonmetallic mineral material 5 and inner core 1, finish filtration procedure, filter gained water further by water purification Send out pump 16 through water purification output tube 14 suction clean water tanks 15.
After filtering for some time, filter core has been held back dirts such as a large amount of suspended substances and large particulate matter outward, these dirts are through aggegation, major part can be deposited on the bottom of sump 11, when mud in sump 11 bottom deposits to a certain amount of the time, can open the sludge outlet of sump 11 bottoms, start sludge pump 19 and extract and send into mud out pressure filter 20, being admitted to 21 outward transports of mud bucket through pressure filter 20 press filtration gained sludge residues handles, and press filtration gained water is drawn back to sump 11 again by sump pump 22, refilters.
When the dirt of being held back outside the filter core when filter case 2 surperficial aggegations are too much, can have a strong impact on the filtration efficiency of filter core, thereby need to clear up these dirts.The backwashing pump 17 and the back flushing control device 18 that are provided with in the present embodiment effluent treatment plant can effectively address this problem.Back flushing control device 18 is according to the flow feedback of pressure feedback of coming self-purification Send out pump 16 or water purification output tube 14, can in time start backwashing pump 17, and provide a negative pressure for filter core, a part of water in the clean water tank 15 is got back in the sump 11 via inner core 1, filtering unit and shell 2, the dirt that filtering unit and shell 2 surfaces are held back washes simultaneously, so that filter core does not stop up, guarantee the filtration efficiency of filter core.
The purification efficiency height of present embodiment effluent treatment plant, the water quality that purifies gained water is good; Filter core adopts the rotary type design, helps the sludgd deposition of cartridge surface and improves the efficient of back flushing; And the compact construction of this device, floor space is little, and is simple to operate, and working cost and energy consumption are all very low, have greatly application value.
More than the present invention has been done detailed description; its purpose is to allow the personage that is familiar with this art can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences of doing according to spirit of the present invention change or modify, and all should be encompassed in protection scope of the present invention.

Claims (10)

1. filter core that is used for sewage purification, the tubular inner core (1) that comprises at least one end opening, be around in described inner core (1) periphery and be used for filter case (2) that sewage is carried out filtering filtering unit and is around in described filtering unit periphery, it is characterized in that: described filtering unit comprise along the length direction of described inner core (1) extend and between the outer wall of the inwall of described shell (2) and described inner core (1) along turn back the back and forth filtering membrane (3) of setting of the circumferential direction of described inner core (1), described filtering membrane (3) surrounds along equally distributed a plurality of first filter chambers of the circumferential direction of described shell (2) with the inwall of described shell (2), described filtering membrane (3) surrounds along equally distributed a plurality of second filter chambers of the circumferential direction of described inner core (1) with the outer wall of described inner core (1), and described filtering unit also comprises filter pearl (4) that is filled in a plurality of described first filter chambers and the natural nonmetallic mineral material (5) that is filled in a plurality of described second filter chambers.
2. filter core according to claim 1, it is characterized in that: described filtering membrane (3) is spliced along the circumferential direction of described inner core (1) membrane module (30) that is provided with of turning back back and forth between the outer wall of the inwall of described shell (2) and described inner core (1) by polylith, described filtering unit also comprises a plurality of coupling devices (7) that extend and be used for adjacent described membrane module (30) is stitched together along the length direction of described inner core (1), described coupling device (7) comprises the outer bar (70) of the clamping with the draw-in groove that runs through self length direction, can be clamped on the interior bar (71) of clamping in the described draw-in groove, the edge part along the extension of described inner core (1) length direction of adjacent two described membrane modules (30) can be wound on the interior bar (71) of described clamping and upward and by bar (71) in the described clamping snap in the interior splicing that realizes between the described membrane module (30) of described draw-in groove.
3. filter core according to claim 1 and 2, it is characterized in that: be lining in the sorbing material (6) by described second filter chamber, one side of described filtering membrane (3) in described filtering unit also comprises, and described sorbing material (6) is non-woven fabrics or polyglutamic acid adsorption film.
4. filter core according to claim 1 and 2 is characterized in that: described filtering membrane (3) for the aperture at polyvinylidene fluoride film between 0.03~0.45 micron or aperture the poly tetrafluoroethylene between 0.4~2.0 micron.
5. filter core according to claim 1 and 2 is characterized in that: described filter pearl (4) is the plastic pellet of particle diameter between 2~4 millimeters.
6. filter core according to claim 1 and 2 is characterized in that: described natural nonmetallic mineral material (5) is one or more the mixture in gac, active zeolite, attapulgite, the fetters stone.
7. one kind contains the effluent treatment plant of filter core according to claim 1, comprise sump (11), water purification output tube (14), described filter core is arranged on the inside of described sump (11), the inner core of described filter core (1) is inner to form the water purification passage (10) that supplies water and pass through, and described water purification passage (10) is connected with described water purification output tube (14).
8. effluent treatment plant according to claim 7, it is characterized in that: described filter core is horizontally set in the described sump (11) rotationally along self direction of axis line, one end of described filter core has totally-enclosed fluid-tight first end face (8), offer second end face (9) of pure water inlet in the middle part of the other end has according to described water purification passage (10) correspondence, described water purification output tube (14) can be connected with described second end face (9) at described pure water inlet place with relatively rotating; Described effluent treatment plant also comprise be fixedly connected with described first end face (8) and along self direction of axis line be horizontally set on rotation axis (12) on the described sump (11) rotationally, drive motor (13) that described rotation axis (12) rotates, clean water tank (15) and be connected with described water purification output tube (14) is used for the water purification Send out pump (16) with the described clean water tank of water suction (15) in the described water purification passage (10).
9. effluent treatment plant according to claim 8, it is characterized in that: described effluent treatment plant comprises that also an end is connected with described clean water tank (15), the other end backwashing pump (17) that the suspended substance that is used for a part of water in the described clean water tank (15) drawn back in the described water purification passage (10) and can holds back described filtering unit or large particulate matter wash that is connected with described water purification passage (10), and an end links to each other with described backwashing pump (17), the back flushing control device (18) that the other end links to each other with described water purification Send out pump (16) or described water purification output tube (14); Described back flushing control device (18) can or cut out according to the unlatching of the described backwashing pump of flow feedback control (17) of the pressure feedback of described water purification Send out pump (16) or described water purification output tube (14).
10. effluent treatment plant according to claim 9, it is characterized in that: described sump (11) bottom has sludge outlet, described effluent treatment plant also comprises being connected with described sludge outlet and is used for sludge pump (19) that the mud of described sump (11) bottom deposit is extracted out, be connected with described sludge pump (19) and be used for pressure filter (20) that the mud that described sludge pump (19) is extracted out is carried out press filtration, described pressure filter (20) has two outlets, one of them is connected with the mud bucket (21) that receives sludge residue, and another is connected with sump pump (22) so that the water of press filtration gained can be drawn back to described sump (11) again purifies.
CN2011100280225A 2011-01-26 2011-01-26 Filter element used for sewage purification and sewage purification device with same Active CN102120651B (en)

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Cited By (10)

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Publication number Priority date Publication date Assignee Title
CN102527154A (en) * 2011-10-20 2012-07-04 常州亚环环保科技有限公司 Structural filter element used for removing silver in drinking water and preparation method thereof
CN102826624A (en) * 2012-08-13 2012-12-19 吴江市聚力机械有限公司 Adsorption rod for waste water treatment
CN103043836A (en) * 2012-12-03 2013-04-17 姜英杰 Energy-saving and water-saving type water purifier
CN103910392A (en) * 2014-04-11 2014-07-09 上海亚弘过滤器材有限公司 Filter element of household, commercial and industrial water purifier
CN106396198A (en) * 2016-12-06 2017-02-15 福建海西滤水龙头研究中心有限公司 Direct drinking filtering composite filter element and water filtering faucet
CN106517374A (en) * 2016-11-21 2017-03-22 苏州爱利过滤技术有限公司 Novel high-efficiency filter core
CN108079626A (en) * 2017-12-22 2018-05-29 苏州艾捷尔斯生物科技有限公司 A kind of environment-friendly sewage filter device
CN108634556A (en) * 2018-03-28 2018-10-12 广西艾尚嘉家居有限公司 A kind of desk with formaldehyde absorbing function
CN111906635A (en) * 2020-07-28 2020-11-10 鲍玲芳 Automatic grinding device for water pump pliers
CN112933707A (en) * 2021-01-28 2021-06-11 张振亚 Prevent blockking up river course mud solid-liquid separation processing apparatus

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CN202016906U (en) * 2011-01-26 2011-10-26 昆山工研院华科生物高分子材料研究所有限公司 Filter element for purifying sewage and sewage purifying device comprising filter element

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GB2394677A (en) * 2002-11-01 2004-05-05 Nep Holdings A composite filtration material
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527154A (en) * 2011-10-20 2012-07-04 常州亚环环保科技有限公司 Structural filter element used for removing silver in drinking water and preparation method thereof
CN102826624A (en) * 2012-08-13 2012-12-19 吴江市聚力机械有限公司 Adsorption rod for waste water treatment
CN103043836A (en) * 2012-12-03 2013-04-17 姜英杰 Energy-saving and water-saving type water purifier
CN103910392A (en) * 2014-04-11 2014-07-09 上海亚弘过滤器材有限公司 Filter element of household, commercial and industrial water purifier
CN106517374A (en) * 2016-11-21 2017-03-22 苏州爱利过滤技术有限公司 Novel high-efficiency filter core
CN106396198A (en) * 2016-12-06 2017-02-15 福建海西滤水龙头研究中心有限公司 Direct drinking filtering composite filter element and water filtering faucet
CN108079626A (en) * 2017-12-22 2018-05-29 苏州艾捷尔斯生物科技有限公司 A kind of environment-friendly sewage filter device
CN108634556A (en) * 2018-03-28 2018-10-12 广西艾尚嘉家居有限公司 A kind of desk with formaldehyde absorbing function
CN111906635A (en) * 2020-07-28 2020-11-10 鲍玲芳 Automatic grinding device for water pump pliers
CN112933707A (en) * 2021-01-28 2021-06-11 张振亚 Prevent blockking up river course mud solid-liquid separation processing apparatus

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