CN201722226U - Domestic nanofiltration membrane and reverse osmosis water purifier for city and countryside - Google Patents

Domestic nanofiltration membrane and reverse osmosis water purifier for city and countryside Download PDF

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Publication number
CN201722226U
CN201722226U CN2010202279971U CN201020227997U CN201722226U CN 201722226 U CN201722226 U CN 201722226U CN 2010202279971 U CN2010202279971 U CN 2010202279971U CN 201020227997 U CN201020227997 U CN 201020227997U CN 201722226 U CN201722226 U CN 201722226U
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water
filter
encloses container
filtering device
upper valve
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陈罗杰
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Abstract

A domestic nanofiltration membrane and reverse osmosis water purifier for city and countryside comprises a multifunctional composite linear filtering device, a compressed active carbon filter element filtering device, a nanofiltration membrane filtering device, a reverse osmosis (RO) membrane filtering device, and a rear-mounted active carbon filter element filtering device. An upper valve seat of a closed container is provided with a spiral internal thread for connecting with a barrel body. An upper opening of the barrel body is provided with a spiral external thread for connecting with the upper valve seat. The closed container is provided with a silica gel sealing ring. The active carbon filter element is provided at the rear part. The upper valve seat of the closed container is provided with a water inlet, and the lower valve seat of the closed container is provided with a water outlet. A water outlet of the reverse osmosis (RO) membrane filtering device is communicated with a water inlet of the rear-mounted active carbon filter element filtering device. The domestic nanofiltration membrane and reverse osmosis water purifier has the following advantages: high economical performance, high practicability, good filtering effect, and capability of supplying standard and healthy drink water for families, enterprises and public institutions in city and countryside.

Description

A kind of town and country family expenses nanofiltration membrane and reverse osmosis water purifier
One, technical field
The utility model relates to water correction plant, particularly the manufacturing field of the water purifier of the tap water that uses for town-dweller-rural-family and enterprises and institutions.
Two, background technology
In the last few years, the seriously polluted life that is threatening the mankind of environmental pollution and water resources, the pollution of water resources is the most serious to the influence in rural area, basically be urban residents' digging well to get water with good conditionsi, unqualified is just fetched water in the river and the mountains and rivers and is drunk, and at present the whole nation more than 90% the river and underground water is polluted even severe contamination, its pollution is loathsome especially, especially underground surface water and tap water ferrimanganic, suspended substance, the colloid thing, toxic byproduct, agricultural chemicals, bacterium, silt, iron rust, the solid impurity pollution hazard, organic chemicals, agricultural chemicals, chemical fertilizer, acid cancer thing, heavy metal and metal ion, trichloromethane (rural households that relate to are greatly about more than 5.6 thousand ten thousand), even there is well that water is arranged, also severe overweight, can't drink, threaten human healthy.The condition of similar city tap-water is not used in general small towns, and directly with underground water or the face of land natural stream networks source as tap water, its present situation is rural households' drinking water pollution, severe overweight to small towns population; The small towns tap water partly exceeds standard, and do not reach People's Republic of China's " drinking water sanitary standard ", and the present situation of above-mentioned pollution has constituted the very big threat to the town and country personnel health.
Known water purifier product design structure and water preparation process are not outstanding, technology content is comparatively low, mainly be based on small towns the exceed standard rough purification of groundwater source and the purification again of tap water, the purpose that reaches general tap water designs, and can not solve cities and towns and people in the countryside water source and reach the purpose that People's Republic of China's " drinking water sanitary standard " becomes pure water after purifying.As: Chinese patent literature discloses " the super active water water making machine in a kind of town and country " (ZL200820063753.7), with the tap water is the water source, adopts Zeo-karb purification, active carbon stick filtration, active water generator filtration, the senior filter element filtering of accurate gac to be treated as direct drinking water.
Three, utility model content
The utility model mainly is in conjunction with China's reality, push forward the building of a new socialist countryside and the country geology disaster region population safty of drinking water engineering is matched, purpose provides a kind of town and country family expenses nanofiltration membrane and reverse osmosis water purifier, is better than the problem of the People's Republic of China's " drinking water sanitary standard " to solve exceed standard tap water or underground surface water of town and country and geologic hazard area portion.This novel purpose is realized by following technical scheme: a kind of town and country family expenses nanofiltration membrane and reverse osmosis water purifier, comprise multi-functional compound filter courage filtration unit, extruded activated carbon filter element filtering device, the nanofiltration membrane filtration unit, reverse osmosis RO membrane filter appts, it is characterized in that, also has post active carbon filter element filtering device: be provided with the spiral internal sealing plug that connects cylindrical shell in the upper valve base of its encloses container, the spiral external sealing plug that connects upper valve base that is provided with suitable for reading of cylindrical shell, the top of filter core is provided with the ring seal edge, described active carbon filter core is arranged on the middle part of encloses container, the upper valve base of encloses container is provided with water-in, and the lower valve base of encloses container is provided with water outlet; The water outlet of described reverse osmosis RO membrane filter appts is communicated with the water-in of post active carbon filter element filtering device.
Reverse osmosis RO membrane filter appts: be provided with the spiral external sealing plug that connects cylindrical shell, the spiral internal sealing plug that connects upper valve base that is provided with suitable for reading of cylindrical shell in the upper valve base of its encloses container, described reverse osmosis RO membrane filtration core is arranged on the middle part of encloses container, the top of encloses container valve seat is provided with water-in, the bottom of encloses container is provided with water outlet, and the bottom of encloses container also is provided with sewage draining exit; The water outlet of described nanofiltration membrane filtration unit is communicated with the water-in of reverse osmosis RO membrane filter appts.
The nanofiltration membrane filtration unit: the loam cake of its nanofiltration membrane putamina is provided with the nut of the housing that spins, the upper end of housing is provided with the bolt of the loam cake that spins, described nanofiltration membrane is crossed the middle part that filter core is arranged on putamina, the bottom of putamina is provided with water-in, the top is provided with sewage draining exit, has water outlet on the right flank on putamina top; The water outlet of described extruded activated carbon filter element filtering device is communicated with the water-in of nanofiltration membrane filtration unit.
Extruded activated carbon filter element filtering device: be provided with the spiral external sealing plug that connects cylindrical shell in the upper valve base of its encloses container, the spiral internal sealing plug that connects upper valve base that is provided with suitable for reading of cylindrical shell, the upper valve base center is provided with the spiral internal sealing plug that connects filter core, the top of filter core is provided with the spiral external sealing plug that connects upper valve base, described extruded activated carbon is crossed the middle part that filter core is arranged on encloses container, the left side of encloses container valve seat is provided with water-in, and the right side of encloses container valve seat is provided with water outlet; The water outlet of described multi-functional compound filter courage filtration unit is communicated with the water-in of extruded activated carbon filter element filtering device.
Multi-functional compound filter courage filtration unit: be fixed with a multi-functional compound filter courage of forming by filter-core shell and multi-filtering layer on the centre hole of its dividing plate, the top of filter-core shell is provided with laser eye filter, the bottom is provided with high degree of accuracy screen and PP cellucotton filter, be provided with the KDF filtering layer in the filter-core shell from bottom to top, granular magnet filtering layer, the multifunctional composite filter material filtering layer, the top of encloses container is provided with water-in, the sewage backwash mouth, the bottom of encloses container is provided with water outlet, the back flushing water inlet, fixedly land seat, the right side of dividing plate is provided with built-in posticum; The water outlet of described former water is communicated with the water-in of multi-functional compound filter courage filtration unit.
In the above-mentioned design, these novel employing five core one bed filtration devices are with the needs at town and country and geologic hazard area drinking water treatment.Exceed standard the underground surface water of tap water and rural area as part concerning cities and towns, this is novel to carry out that laser eye filter filters, multifunctional composite filter material filters, granular magnet filters, KDF filters, the high degree of accuracy screen filters, PP cellucotton filter filters, behind the extruded activated carbon filter element filtering, carries out reverse osmosis RO membrane filtration again, the post active carbon filter element filtering is handled it.
Compare with prior art (on the basis of existing active carbon stick filtration and super active water generator filtration treatment), this novel pin has increased treatment steps such as multi-functional compound filter courage filtration unit, extruded activated carbon filter element filtering, nanofiltration membrane filter element filtering, reverse osmosis RO membrane filtration, post active carbon filter element filtering to the water source, town and country.During this was novel, laser eye filter can effectively be removed silt, iron rust, impurity, suspended substance, the removing incrustation scale in the water; Multifunctional composite filter material is the silt in the filtering water effectively, iron rust, impurity, suspended substance, remove incrustation scale, filtration efficiency is up to more than 99%, also can remove, iron, mn ion, poisonous metal, colloidalmaterial, various mechanical impuritys, to acid, in, the purifying treatment of alkaline water, clearance is up to 99.5%, can threaten maximum chlorine residue to HUMAN HEALTH in the absorption water, peculiar smell, heterochromatic, the foreign odor thing, agricultural chemicals, granulometric impurity in trichloromethane and the water, stop bacterium, objectionable impurities such as chemical substance and heavy metal element, remove the organism in the water, keep mineral substance and trace element the human body beneficial; Muddy thing, colourity, peculiar smell, chlorine residue, bacterium, organism and other nuisance that is detrimental to health in the further absorption water of granular magnet filtering layer energy, to deironing, demanganization, defluorination effect also clearly; The KDF filtering layer can effectively be removed the chlorine residue in the water, soluble heavy metal, the controlling microbial growth stops the accumulation of hard scale, deironing, reduce fluorochemical, nitrate, nitrate and vitriol etc., remove bacterium and algae in the tap water, can effectively protect nanofiltration membrane and RO film; PP cellucotton filter, aperture densification, evenly, filtration efficiency is up to more than 99.8%, can tackle the silt removed in the underground surface water water, iron rust, impurity, suspended substance effectively once more, thoroughly remove incrustation scale; The extruded activated carbon filter core can carry out purifying treatment to water once more, can further remove chlorine in the water, peculiar smell, other solid matter such as heterochromatic; Nanofiltration membrane is crossed filter core can effectively remove organic chemistry materials such as chlorine residue in the water, peculiar smell, green alga, removes muddy things such as silt, iron rust, colloidal impurity, suspended substance; Reverse osmosis RO film is to utilize the reverse osmosis principle, removes objectionable impuritiess such as disease caused by infectious water poison, bacterium, toxin, heavy metal ion; The post active carbon filter core can effectively suppress bacterium, removes peculiar smell in the water, makes water quality mouthfeel glycol sweet.
This is novel to have following characteristics: 1, can effectively remove silt, iron rust, impurity, suspended substance, removing incrustation scale in the water.2, the effective silt in the filtering water, iron rust, impurity, suspended substance, remove incrustation scale, filtration efficiency is up to more than 99%, also can remove, iron, mn ion, poisonous metal, colloidalmaterial, various mechanical impuritys, to acid, in, the purifying treatment of alkaline water, clearance is up to 99.5%, can threaten maximum chlorine residue to HUMAN HEALTH in the absorption water, peculiar smell, heterochromatic, the foreign odor thing, agricultural chemicals, granulometric impurity in trichloromethane and the water, stop bacterium, objectionable impurities such as chemical substance and heavy metal element, remove the organism in the water, keep mineral substance and trace element the human body beneficial.3, muddy thing, colourity, peculiar smell, chlorine residue, bacterium, organism and other nuisance that is detrimental to health in the further absorption water of energy, to deironing, demanganization, defluorination effect also clearly.4, can effectively remove chlorine residue in the water; soluble heavy metal, the controlling microbial growth stops the accumulation of hard scale; deironing, reduce fluorochemical, nitrate, nitrate and vitriol etc., can remove bacterium and algae in the tap water, can effectively protect nanofiltration membrane and RO film.5, filter aperture densification, evenly, filtration efficiency is up to more than 99.8%, can tackle the silt removed in the underground surface water water, iron rust, impurity, suspended substance effectively once more, thoroughly remove incrustation scale.6, can carry out purifying treatment to water once more, can further remove chlorine in the water, peculiar smell, other solid matter such as heterochromatic.7, can effectively remove organic chemistry materials such as chlorine residue in the seawater, peculiar smell, green alga, remove muddy things such as silt, iron rust, colloidal impurity, suspended substance.8, utilize the reverse osmosis principle, remove objectionable impuritiess such as disease caused by infectious water poison, bacterium, toxin, heavy metal ion.9, can effectively suppress bacterium, remove peculiar smell in the water, improve water quality, glycol is sweet more thereby make the water quality mouthfeel.10, filter back water quality and be better than People's Republic of China's " drinking water sanitary standard ".
This novel economizer is suitable for, and be particularly suitable for town-dweller-rural-family and enterprises and institutions and use, but each household configuration one cover.
Four, description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the device connection diagram of this novel embodiment;
Fig. 2 is the structure iron of multi-functional compound filter courage filtration unit shown in Figure 1;
Fig. 3 is the structure iron of extruded activated carbon filter element filtering device shown in Figure 1;
Fig. 4 is the structure iron of nanofiltration membrane filtration unit shown in Figure 1;
Fig. 5 is the structure iron of reverse osmosis RO membrane filter appts shown in Figure 1;
Fig. 6 is the structure iron of post active carbon filter element filtering device shown in Figure 1.
Five, embodiment
Fig. 1 illustrates this novel water treatment device and is equipped with the situation of filtering power and sewage backwash, as for town-dweller-rural-family and enterprises and institutions' use, then directly tap water is introduced, and send into by the road and carry out filtration treatment in this new device, the water after the processing is outwards exported or is sent in the pure water jar 6 for using through valve 16 through valve 17.
Among Fig. 2, the encloses container that multi-functional compound filter courage filtration unit 1 is made up of cylindrical shell 1b and upper cover 1a, cylindrical shell 1b is connected with upper cover 1a spiral, the top of this encloses container is provided with water-in 1c, sewage backwash mouth 1e, the bottom of encloses container is provided with water outlet 1d, back flushing water inlet 1f, fixedly land the seat 31, the right side of dividing plate 29 is provided with built-in posticum 30, be fixed with a multi-functional compound filter courage of forming by filter-core shell 28 and multi-filtering layer on the centre hole of this dividing plate, be provided with high degree of accuracy screen and PP cellucotton filter 27 (aperture 0.3mm) in the filter-core shell from bottom to top, KDF filtering layer 26 (granularity 0.6-0.8mm), granular magnet filtering layer 25 (granularity 1.0-1.2mm), multifunctional composite filter material filtering layer 24 (granularity 1.0-1.5mm), laser eye filter 23 (aperture 0.5mm), the total thickness>0.38m of above-mentioned filtering layer; The top of laser eye filter 23 is provided with arc water distributor 22 in this encloses container, spreads all over the water hole on it, plays the distribution effect of water.Be lined with filter cloth between the above-mentioned filtering layer.
Among Fig. 3, the encloses container that extruded activated carbon filter element filtering device 2 is made up of cylindrical shell 2b and upper valve base 2a, cylindrical shell 2b is connected with upper valve base 2a spiral, the left side of this valve seat is provided with water-in 2c, the right side of encloses container valve seat is provided with water outlet 2d, be provided with the spiral external sealing plug 32 that connects cylindrical shell in the upper valve base of encloses container, the spiral internal sealing plug 33 that connects upper valve base that is provided with suitable for reading of cylindrical shell, the upper valve base center is provided with the spiral internal sealing plug 34 that connects filter core, the top of filter core is provided with the spiral external sealing plug 36 that connects upper valve base, be provided with silica gel sealing ring 35 in the encloses container, extruded activated carbon filter core 37; Extruded activated carbon filter core 37 is connected with upper valve base 2a spiral in this encloses container.
Among Fig. 4, the encloses container that nanofiltration membrane filtration unit 3 is made up of putamina 3b and loam cake 3a, putamina 3b is connected with loam cake 3a spiral, the loam cake of this encloses container is provided with the nut 42 of the housing that spins, the housing upper end is provided with the bolt 43 of the loam cake that spins, the middle part of putamina is provided with nanofiltration membrane and crosses filter core 44, and the bottom of putamina is provided with water-in 3c, the top is provided with sewage draining exit 3e, has water outlet 3d on the right flank on putamina top.
Among Fig. 5, the encloses container that reverse osmosis RO membrane filter appts 4 is made up of cylindrical shell 4b and upper valve base 4a, cylindrical shell 4b is connected with upper valve base 4a spiral, the top of this valve seat is provided with water-in 4c, the right side of encloses container bottom is provided with water outlet 4d, the left side of encloses container bottom is provided with sewage draining exit 4e, be provided with the spiral external sealing plug 52 that connects cylindrical shell in the upper valve base of encloses container, the spiral internal sealing plug 53 that connects upper valve base that is provided with suitable for reading of cylindrical shell, the upper valve base center is provided with the fixedly circular card pipe 54 of RO film, be provided with silica gel sealing ring 55 in the encloses container, reverse osmosis RO film 56.
Among Fig. 6, the encloses container that post active carbon filter element filtering device 5 is made up of cylindrical shell 5b and upper valve base 5a, cylindrical shell 5b is connected with upper valve base 5a spiral, the upper valve base of this encloses container is provided with water-in 5c, the lower valve base of encloses container is provided with water outlet 5d, is provided with the spiral internal sealing plug 62 that connects cylindrical shell in the upper valve base of encloses container, the spiral external sealing plug 63 that connects upper valve base that is provided with suitable for reading of cylindrical shell, be provided with silica gel sealing ring 64 in the encloses container, post active carbon filter core 65; The circular seal edge of post active carbon filter core 65 and upper valve base 5a screw fixed in this encloses container.
Referring to Fig. 1, process from water treatment, former water enters from the water-in 1c on the encloses container of multi-functional compound filter courage filtration unit 1 through valve 8 and valve 9, after filtering, water outlet 1d from the encloses container bottom flows out, enter extruded activated carbon filter element filtering device 2 through valve 10 again, after filtering, enter nanofiltration membrane filtration unit 3 and reverse osmosis RO membrane filter appts 4 through topping-up pump 7 again, after filtering, again among valve 13 and valve 16 enter post active carbon filter element filtering device 5 and pure water jar 6 respectively, after five core one are filtered, become pure water, outwards export through valve 17, (bleed valve 12 on the sewage draining exit of top and bleed valve 14 are separately positioned on the top of multi-functional compound filter courage filtration unit and nanofiltration membrane filtration unit, and the water intaking valve 11 on the bottom back flushing water inlet is arranged on the bottom of multi-functional compound filter courage filtration unit, bleed valve 15 on the bottom blow-down mouth is arranged on the bottom of reverse osmosis RO membrane filter appts, the supplying apparatus back flushing and use when just washing).The water outlet of above-mentioned former water is communicated with the water-in of multi-functional compound filter courage filtration unit; The water outlet of multi-functional compound filter courage filtration unit is communicated with the water-in of extruded activated carbon filter element filtering device; The water outlet of extruded activated carbon filter element filtering device is communicated with the water-in of nanofiltration membrane filtration unit; The water outlet of nanofiltration membrane filtration unit is communicated with the water-in of reverse osmosis RO membrane filter appts; The water outlet of reverse osmosis RO membrane filter appts is communicated with the water-in of post active carbon filter element filtering device.
In addition, container can adopt edible stainless steel 304 materials during this was novel, and shell can adopt the edible plastic material, to satisfy hygienic requirements.

Claims (9)

1. town and country family expenses nanofiltration membrane and reverse osmosis water purifier, comprise multi-functional compound filter courage filtration unit, extruded activated carbon filter element filtering device, the nanofiltration membrane filtration unit, reverse osmosis RO membrane filter appts, it is characterized in that, also has post active carbon filter element filtering device (5): be provided with the spiral internal sealing plug (62) that connects cylindrical shell in the upper valve base of this encloses container, the spiral external sealing plug (63) that connects upper valve base that is provided with suitable for reading of cylindrical shell, be provided with silica gel sealing ring (64) in the encloses container, post active carbon filter core (65), the upper valve base of this encloses container is provided with water-in (5c), and the lower valve base of encloses container is provided with water outlet (5d); The water outlet of described reverse osmosis RO membrane filter appts (4) is communicated with the water-in (5c) of post active carbon filter element filtering device (5).
2. water purifier according to claim 1, it is characterized in that, the structure of reverse osmosis RO membrane filter appts (4) is: be provided with the spiral external sealing plug (52) that connects cylindrical shell in the upper valve base of this encloses container, the spiral internal sealing plug (53) that connects upper valve base that is provided with suitable for reading of cylindrical shell, the upper valve base center is provided with the fixedly circular card pipe (54) of RO film, be provided with silica gel sealing ring (55) in the encloses container, reverse osmosis RO film (56), the top of this valve seat is provided with water-in (4c), and the right side of encloses container bottom is provided with water outlet (4d); The water outlet of described nanofiltration membrane filtration unit (3) is communicated with the water-in (4c) of reverse osmosis RO membrane filter appts (4).
3. water purifier according to claim 2, it is characterized in that, the structure of nanofiltration membrane filtration unit (3) is: the loam cake of this encloses container is provided with the nut (42) of the housing that spins, the housing upper end is provided with the bolt (43) of the loam cake that spins, the middle part of putamina is provided with nanofiltration membrane and crosses filter core (44), the bottom of putamina is provided with water-in (3c), has water outlet (3d) on the right flank on putamina top; The water outlet of described extruded activated carbon filter element filtering device (2) is communicated with the water-in (3c) of nanofiltration membrane filtration unit (3).
4. water purifier according to claim 3, it is characterized in that, the structure of extruded activated carbon filter element filtering device (2) is: be provided with the spiral external sealing plug (32) that connects cylindrical shell in the upper valve base of this encloses container, the spiral internal sealing plug (33) that connects upper valve base that is provided with suitable for reading of cylindrical shell, the upper valve base center is provided with the spiral internal sealing plug (34) that connects filter core, the top of filter core is provided with the spiral external sealing plug (36) that connects upper valve base, be provided with silica gel sealing ring (35) in the encloses container, extruded activated carbon filter core (37), the left side of this valve seat is provided with water-in (2c), the right side of encloses container valve seat is provided with water outlet (2d), and the water outlet of described multi-functional compound filter courage filtration unit (1) is communicated with the water-in (2c) of extruded activated carbon filter element filtering device (2).
5. water purifier according to claim 4, it is characterized in that, the structure of multi-functional compound filter courage filtration unit (1) is: the top of this encloses container is provided with water-in (1c), the bottom of encloses container is provided with water outlet (1d), fixedly land (31), the right side of dividing plate (29) is provided with built-in posticum (30), be fixed with a multi-functional compound filter courage of forming by filter-core shell (28) and multi-filtering layer on the centre hole of this dividing plate, be provided with high degree of accuracy screen and PP cellucotton filter (27) in the filter-core shell from bottom to top, KDF filtering layer (26), granular magnet filtering layer (25), multifunctional composite filter material filtering layer (24), laser eye filter (23); The water outlet of described former water is communicated with the water-in (1c) of multi-functional compound filter courage filtration unit (1).
6. water purifier according to claim 5 is characterized in that, the top of laser eye filter (23) is provided with arc water distributor (22) in the encloses container of described multi-functional compound filter courage filtration unit (1).
7. water purifier according to claim 6, it is characterized in that, the aperture of the PP cellucotton filter in the described multi-functional compound filter courage filtration unit (1) is that the granularity of 0.3mm, KDF filtering layer is that the granularity of 0.6-0.8mm, granular magnet filtering layer is that the granularity of 1.0-1.2mm, multifunctional composite filter material filtering layer is that the aperture of 1.0-1.5mm, laser eye filter is 0.5mm, total thickness of filter bed>0.38m.
8. water purifier according to claim 7 is characterized in that, the encloses container of described multi-functional compound filter courage filtration unit (1) is spun by cylindrical shell and upper cover and forms; The encloses container of described extruded activated carbon filter element filtering device (2), nanofiltration membrane filtration unit (3), reverse osmosis RO membrane filter appts (4) and post active carbon filter element filtering device (5) spins by cylindrical shell and upper valve base and forms; The filter core of crossing of described extruded activated carbon filter element filtering device (2) is connected with the upper valve base spiral; The circular seal edge of crossing filter core of described post active carbon filter element filtering device (5) is connected with the upper valve base spiral.
9. water purifier according to claim 8 is characterized in that, the top of the encloses container of described multi-functional compound filter courage filtration unit (1) is provided with sewage backwash mouth (1e), the bottom is provided with back flushing water inlet (1f); The putamina top of described nanofiltration membrane filtration unit (3) is provided with sewage draining exit (3e); The encloses container bottom left of described reverse osmosis RO membrane filter appts (4) is provided with sewage draining exit (4e).
CN2010202279971U 2010-06-18 2010-06-18 Domestic nanofiltration membrane and reverse osmosis water purifier for city and countryside Expired - Fee Related CN201722226U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102583854A (en) * 2012-01-18 2012-07-18 中国环境科学研究院 Underground water combined membrane selectivity defluorination method and device
CN106745905A (en) * 2017-01-23 2017-05-31 福建海西滤水龙头研究中心有限公司 A kind of desalinization integral type composite filter element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102583854A (en) * 2012-01-18 2012-07-18 中国环境科学研究院 Underground water combined membrane selectivity defluorination method and device
CN106745905A (en) * 2017-01-23 2017-05-31 福建海西滤水龙头研究中心有限公司 A kind of desalinization integral type composite filter element

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Termination date: 20110618