CN102259951A - Microfiltration membrane forming filter tank and filtering method thereof - Google Patents
Microfiltration membrane forming filter tank and filtering method thereof Download PDFInfo
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- CN102259951A CN102259951A CN2010101851027A CN201010185102A CN102259951A CN 102259951 A CN102259951 A CN 102259951A CN 2010101851027 A CN2010101851027 A CN 2010101851027A CN 201010185102 A CN201010185102 A CN 201010185102A CN 102259951 A CN102259951 A CN 102259951A
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Abstract
The invention discloses a microfiltration membrane forming filter tank, which is characterized in that: a water inlet and a water outlet are formed on the same side of the tank body; a U-shaped water inlet groove is formed at the water inlet; the upper end of the U-shaped water inlet groove is communicated with the water inlet; the lower end of the U-shaped water inlet groove is open; a group of flat filter elements are vertically arranged in the tank body; a filtrate outlet pipe orifice of each flat filter element is connected with the water outlet through a tank for collecting water obtained after total filtration; the bottom of the tank body is provided with a drain; each flat filter element comprises filter cloth arranged on the surface of the filter element; the filter cloth covers a sheet filter frame; one side of the sheet filter frame is provided with a filtrate collecting pipe; and the filtrate outlet pipe orifice is communicated with the filtrate collecting pipe. A kieselguhr and anion exchange resin mixed filtration membrane with the thickness of 2-4mm is formed on the filter cloth on the surface of each flat filter element, and a ratio of kieselguhr to anion exchange resin is 1:1. The microfiltration membrane forming filter tank has the advantages that: the structure is simple, the head loss is small, the operation cycle is improved, the capacity of adsorbing organic matters is greatly improved and the filter effect is greatly improved.
Description
Technical field:
The present invention relates to the city tap-water processing technology field, a kind of specifically micro-filtration film forming filter tank and filter method thereof.
Background technology:
Pollution of waterhead is the common problem that world today's scope is faced, especially the eutrophication pollution problem.Under the contaminated situation in water source and since conventional water-purifying process limitation, the Drinking Water water quality safety after the processing is difficult to guarantee, especially behind 07 year Taihu Lake blue algae bloom, the most general complaint is a stench flavor in the water to people to water quality.Simultaneously, the lake water lower for turbidity, conventional clarification filtration technology is difficult to satisfy the requirement of drinking water treatment.
It is between membrane technique and traditional sand filtration technology that diatomite powder covers filtering technique, carries out filtering a kind of new technique with the former water of diatomite in powder foot couple.The diatomite powder precoat filter is by hydraulic way with pulverous diatomite, the surface that is laid on the filtering technique filter element equably is as filtration medium, form the thick film of 1.5-3.0um, suspended particle in the trap water and other germs/bacteria etc. thus make the water after the filtration reach drinking water standard.
Summary of the invention:
The object of the present invention is to provide a kind of micro-filtration film forming filter tank, can utilize diatomite powder and negative resin powder to carry out online shop film, and former water is filtered.
In order to realize this purpose, technical scheme of the present invention is as follows: a kind of micro-filtration film forming filter tank, comprise the pond body, the pond body is provided with water-in and water outlet, it is characterized in that water-in and water outlet are arranged on the same side of pond body, the water inlet is provided with U type inlet flume, U type inlet flume upper end is communicated with water-in, U type inlet flume lower ending opening, vertically be provided with one group of dull and stereotyped filter element in the body of pond, the filtrate fluid mouth of pipe of this flat board filter element is connected with water outlet by total filter back water collecting groove, body bottom, pond is provided with evacuation port, and every dull and stereotyped filter element comprises the filter cloth that is located at the filter element surface, and filter cloth is enclosed within outside the thin board type filter frame, this thin board type filter frame one side is provided with the filtrate collection pipe, and the filtrate fluid mouth of pipe is communicated with the filtrate collection pipe.This thin board type filter frame comprises casing ply, and the casing ply both sides are supporting layer, and filter cloth is enclosed within outside the supporting layer, is provided with filtrate channel in the casing ply and is communicated with the filtrate collection pipe, and the filtrate fluid mouth of pipe is located at filtrate collection pipe upper end.
Another object of the present invention is to provide a kind of micro-filtration to become membrane filtering method, can utilize diatomite powder and negative resin powder to carry out online shop film, and filter with the former water of diatomite in powder foot couple.
In order to realize this purpose, technical scheme of the present invention is as follows: a kind of micro-filtration becomes membrane filtering method, it is characterized in that this method may further comprise the steps: A, preparation filtrate are made into filtrate with diatomite powder and anionite-exchange resin powder in the film case of shop; B, overlay film, utilize lift pump that this filtrate is fed the strainer water-in, filtrate is by the water-in water inlet of bottom, filter tank, and filtrate forms downward current by the water inlet of U type inlet flume, after the bottom reflection of filter tank, form upward water flow, the dull and stereotyped filter element in the filter tank is overlay film; C, filtration, utilize lift pump that former water is fed the strainer water-in, water-in water inlet by the bottom, filter tank, form downward current by the water inlet of U type inlet flume, after the bottom reflection of filter tank, form upward water flow, utilize through the dull and stereotyped filter element that overlays film and filter, the water after the filtration is from the water outlet water outlet of top, filter tank.Among the step B, on the filter cloth on dull and stereotyped filter element surface, form the thick filter membrane of 2-4mm, among the step C, former water is by the downward current of U type water-in water inlet formation, after the bottom reflection of filter tank, form upward water flow, behind the filter membrane and filter cloth filtration through dull and stereotyped filter element surface, behind the filtrate channel in the casing ply, collect filter back water by the filtrate collection pipe, be communicated with the water outlet water outlet of top, filter tank by the filtrate fluid mouth of pipe and total filter back water collecting groove.
The principle of work in micro-filtration film forming filter tank is that diatomite powder and anionite-exchange resin are laid on the surface of dull and stereotyped filter element as filtration medium equably with pre-coating film and online shop membrane technique, solution is laid on equably the surface of dull and stereotyped filter element by the shop membrane pump, by about this circulation 10min, form the thick film of 2-4mm.Suspended particle in the trap water and other germs/bacteria etc. make filter back water reach drinking water standard thus.Adopt anionite-exchange resin and diatomite powder ratio of mixture to produce less head loss, make the cycle of operation obviously improve with pure diatomite powder; In addition, will increase greatly organic absorption, very fast being captured of exchange group that obtains easily on the negative resin goes to capture less cation exchange groups with humic acid afterwards is not free.Cause adsorbed organic slow release like this.Resin has organism adsorption function preferably in normal running temperature 49-71 ℃ (120-160) operation down.The invention has the advantages that simple in structurely, head loss is less, improves the cycle of operation, will increase greatly organic absorption, has improved filter effect greatly.
Description of drawings
Fig. 1 is a micro-filtration film forming of the present invention filter tank structural representation
Fig. 2 is the structural representation of dull and stereotyped filter element
Fig. 3 is a system flow synoptic diagram of the present invention
Fig. 4 is a system flow synoptic diagram of the present invention
Embodiment
Fig. 1 is a kind of micro-filtration film forming filter tank, comprise pond body 2, the pond body is provided with water-in 4 and water outlet 7, it is characterized in that water-in 4 and water outlet 7 are arranged on the same side of pond body 2, water-in 4 places are provided with U type inlet flume 3, and U type inlet flume 3 upper ends are communicated with water-in 4, U type inlet flume 3 lower ending openings, vertically be provided with one group of dull and stereotyped filter element 5 in the pond body 2, the filtrate fluid mouth of pipe 15 of this flat board filter element 5 is connected with water outlet 7 by total filter back water collecting groove 6, and body 2 bottoms in pond are provided with evacuation port 1.As shown in Figure 2, every dull and stereotyped filter element comprises the filter cloth 12 that is located at the filter element surface, and filter cloth 12 is enclosed within outside the thin board type filter frame 13, and these thin board type filter frame 13 1 sides are provided with filtrate collection pipe 14, and the filtrate fluid mouth of pipe 15 is communicated with filtrate collection pipe 14.This thin board type filter frame comprises casing ply 16, and casing ply 16 both sides are supporting layer 17, and filter cloth is enclosed within outside the supporting layer 17, is provided with filtrate channel in the casing ply 16 and is communicated with filtrate collection pipe 14, and the filtrate fluid mouth of pipe 15 is located at filtrate collection pipe 14 upper ends.
Fig. 4 is a system flow synoptic diagram of the present invention, as shown in the figure, micro-filtration film forming filter tank system comprises micro-filtration film forming filter tank 18, the water-in in micro-filtration film forming filter tank 18 is connected with former water inlet 20 by former water lift pump 19 respectively, be connected with shop film case 22 by online shop film lift pump 21, be connected with shop film recycling tank 24 by overlaying film lift pump 23, the water outlet in filter tank 18 is connected with the water-in of clean water basin 25, the water outlet of clean water basin 25 is connected with the water outlet in filter tank 18 by lift pump 26 again, and the water outlet of clean water basin 25 also is connected with user side 28 by lift pump 27.
A kind of micro-filtration becomes membrane filtering method, it is characterized in that this method may further comprise the steps: A, preparation filtrate, in the film recycling tank of shop, diatomite powder and negative resin powder are made into filtrate, consisting of of its filtrate adds diatomite powder, anionite-exchange resin and flocculation agent in the de-mineralized water, filtrate mass concentration 8%-10%, wherein flocculation agent content is 0.08-0.25mg/L, the ratio of diatomite powder, anionite-exchange resin powder is preferably 1: 0.95～and 1.05; B, overlay film, utilize lift pump that this filtrate is fed the strainer water-in, the volumetric concentration of filtrate is 1.01%-1.08%, filtrate is by the water-in water inlet of bottom, filter tank, filtrate forms downward current by the water inlet of U type inlet flume, after the bottom reflection of filter tank, form upward water flow, the dull and stereotyped filter element in the filter tank is overlay film; C, filtration, utilize lift pump that former water is fed the strainer water-in, water-in water inlet by the bottom, filter tank, form downward current by the water inlet of U type inlet flume, after the bottom reflection of filter tank, form upward water flow, utilize through the dull and stereotyped filter element that overlays film and filter, the water after the filtration is from the water outlet water outlet of top, filter tank.Among the step B, on the filter cloth on dull and stereotyped filter element surface, form the thick filter membrane of 2-4mm, among the step C, former water is by the downward current of U type water-in water inlet formation, after the bottom reflection of filter tank, form upward water flow, behind the filter membrane and filter cloth filtration through dull and stereotyped filter element surface, behind the filtrate channel in the casing ply, collect filter back water by the filtrate collection pipe, be communicated with the water outlet water outlet of top, filter tank by the filtrate fluid mouth of pipe and total filter back water collecting groove.Among the step C, former water is in the time of the water-in of lift pump inflow filter, filtrate in the film case of shop is through the water-in of lift pump inflow filter, carry out online shop film and raw water filtration, filtered former water flows into clean water basin from the strainer water outlet, the water of clean water basin is given the user through lift pump, and the water of clean water basin flows back to strainer through lift pump simultaneously.Among the step C, the consisting of of filtrate of shop film case adds diatomite powder, anionite-exchange resin and flocculation agent in the de-mineralized water, the filtrate mass concentration is 8%-10%, wherein flocculation agent content is 0.08-0.25mg/L, the ratio of diatomite powder, anionite-exchange resin powder is 1: 0.95～1.05, and what of the former water yield of processing are the ratio of filtrate and former water depend on, if the shop film did not lose efficacy, can lack quick-fried film, the former water of multiprocessing.The present invention also comprises step D, and the clear water of clean water basin is delivered to the water outlet in filter tank through lift pump, and clear water is intake from water outlet, and the inefficacy filter membrane on the dull and stereotyped filter element is carried out back flushing.
Filtrate in the film recycling tank of shop is through overlaying the filter tank water-in that the film lift pump flows into, and flows back to shop film recycling tank by the water outlet in filter tank, finishes overlaying film; Former water is through the water-in in former water lift pump inflow filter tank, and the filtrate in the film case of shop is carried out online shop film and raw water filtration through the water-in in online shop film lift pump inflow filter tank; Filtered former water flows into clean water basin from the filter tank water outlet, the water of clean water basin is given the user through lift pump, the water of clean water basin flow to the water outlet in filter tank simultaneously through lift pump, its role is to provide the backwashing water in filter tank, is used for the filter membrane that had lost efficacy in dull and stereotyped filter element surface is carried out back flushing.
The present invention adopts the diatomite powder of particle diameter 23-40um, and (particle is tiny, fine and smooth, lubricious, loose, light weight, porous, suction, perviousness are strong, can remove diameter 2um above particle and the algae of particle diameter between 3-7um), (adopt anionite-exchange resin PS3 here with the anionite-exchange resin of particle diameter 30～40um, PS3 is a based food level anionresin powdex, and (8%DVB) makes by strong anion-exchange resin.The physical attribute of PS3 has: the equal grain of powdex, and about 30～40 μ m of granularity, the resin precoated layer has bigger specific area, has strengthened ability and filtration capacity that resin carries out ion-exchange.)
The present invention adopts dull and stereotyped filter element, and filter plate is that diatomaceous shop film provides the foundation, and the wide film of formation strengthens the penetrating amount of water, and also having its working pressure, low (general＜0.2MPa) characteristic makes lengthening filtration cycle.Each filter plate is handled the about 1m of the water yield
3/ h, the long 700mm of filter plate, wide 20mm, high 380mm arranges the filter plate of some amount according to the size of handling the water yield.
Among the present invention, the composition of the filtrate in shop film case and the shop film recycling tank is and adds common diatomite powder and anionite-exchange resin in the de-mineralized water, add flocculation agents such as micro-polyaluminium sulfate or polyaluminum sulfate molysite, be generally 0.08-0.25mg/L, the filtrate mass concentration is 8%-10%, join 1L filtrate and need add the diatomite powder of about 1.01-1.08mg, anionite-exchange resin and flocculation agent, the about 0.08-0.25mg of flocculation agent such as wherein micro-polyaluminium sulfate or polyaluminum sulfate molysite, the diatomite mixed powder, the ratio of anionite-exchange resin is 1: 0.95～1.05, according to one embodiment of present invention, join the diatomite mixed powder that 1L filtrate need add 65mg, the anionite-exchange resin of 65mg and the polyaluminium sulfate of 1mg.In general, handle the former water of 100L and need join 0.6～1L filtrate.
The water inlet of U type inlet flume is adopted in filter tank of the present invention, produces downward current before this, forms upward water flow after the body bottom reflection of pond, can take up the flocculating aids that is deposited on the bottom, filter tank on a small quantity,, prevent that flocculating aids from depositing in the filter tank, make filter effect better.
Do not having under the situation about specifying, the ratio of indication is weight ratio in the literary composition.
Diatomite particle diameter 23-40um among the present invention, negative resin particle diameter 30～40um, the consisting of of filtrate of shop film case adds diatomite powder, anionite-exchange resin and flocculation agent, filtrate mass concentration 8%-10%, the wherein about 0.08-0.25mg/L of flocculation agent content in the de-mineralized water.
Claims (10)
1. micro-filtration film forming filter tank, comprise the pond body, the pond body is provided with water-in and water outlet, it is characterized in that water-in and water outlet are arranged on the same side of pond body, the water inlet is provided with U type inlet flume, and U type inlet flume upper end is communicated with water-in, U type inlet flume lower ending opening, vertically be provided with one group of dull and stereotyped filter element in the body of pond, the filtrate fluid mouth of pipe of this flat board filter element is connected with water outlet by total filter back water collecting groove, and body bottom in pond is provided with evacuation port.
2. micro-filtration film forming as claimed in claim 1 filter tank is characterized in that forming thick diatomite and the anionite-exchange resin mixing filter membrane of 2-4mm on the filter cloth on dull and stereotyped filter element surface, and both ratios are 1: 1.
3. micro-filtration film forming as claimed in claim 2 filter tank is characterized in that every dull and stereotyped filter element comprises the filter cloth that is located at the filter element surface, and filter cloth is enclosed within outside the thin board type filter frame, and this thin board type filter frame one side is provided with the filtrate collection pipe, and the filtrate fluid mouth of pipe is communicated with the filtrate collection pipe.
4. micro-filtration film forming as claimed in claim 3 filter tank, it is characterized in that this thin board type filter frame comprises casing ply, the casing ply both sides are supporting layer, and filter cloth is enclosed within outside the supporting layer, be provided with filtrate channel in the casing ply and be communicated with the filtrate collection pipe, the filtrate fluid mouth of pipe is located at filtrate collection pipe upper end.
5. micro-filtration film forming as claimed in claim 3 filter tank, the water-in that it is characterized in that micro-filtration film forming filter tank is connected with former water inlet by former water lift pump respectively, be connected with shop film case by online shop film lift pump, be connected with shop film recycling tank by overlaying the film lift pump, the water outlet in micro-filtration film forming filter tank is connected with the water-in of clean water basin, the water outlet of clean water basin is connected by the water outlet of lift pump with micro-filtration film forming filter tank again, and the water outlet of clean water basin also is connected with user side by lift pump.
6. a micro-filtration becomes membrane filtering method, it is characterized in that this method may further comprise the steps: A, preparation filtrate are made into filtrate with diatomite powder and anionite-exchange resin powder in the film case of shop; B, overlay film, utilize lift pump that this filtrate is fed the strainer water-in, filtrate is by the water-in water inlet of bottom, filter tank, and filtrate forms downward current by the water inlet of U type inlet flume, after the bottom reflection of filter tank, form upward water flow, the dull and stereotyped filter element in the filter tank is overlay film; C, filtration, utilize lift pump that former water is fed the strainer water-in, water-in water inlet by the bottom, filter tank, form downward current by the water inlet of U type inlet flume, after the bottom reflection of filter tank, form upward water flow, utilize through the dull and stereotyped filter element that overlays film and filter, the water after the filtration is from the water outlet water outlet of top, filter tank.
7. a kind of micro-filtration as claimed in claim 6 becomes membrane filtering method, it is characterized in that: among the step B, form thick diatomite and the anionite-exchange resin mixing filter membrane of 2-4mm on the filter cloth on dull and stereotyped filter element surface.
8. become membrane filtering method as claim 6 or 7 described a kind of micro-filtrations, it is characterized in that: among the step C, former water is by the downward current of U type water-in water inlet formation, after the bottom reflection of filter tank, form upward water flow, behind the filter membrane and filter cloth filtration through dull and stereotyped filter element surface, behind the filtrate channel in the casing ply, collect filter back water by the filtrate collection pipe, be communicated with the water outlet water outlet of top, filter tank by the filtrate fluid mouth of pipe and total filter back water collecting groove.
9. become membrane filtering method as claim 6 or 7 described a kind of micro-filtrations, it is characterized in that: among the step C, former water is in the time of the water-in of lift pump inflow filter, filtrate in the film case of shop is through the water-in of lift pump inflow filter, promptly carry out raw water filtration and online shop film simultaneously, filtered former water flows into clean water basin from the strainer water outlet, and the water of clean water basin is given the user through lift pump, and the water of clean water basin flows back to strainer through lift pump simultaneously.
10. a kind of micro-filtration as claimed in claim 6 becomes membrane filtering method, it is characterized in that this method also comprises step D, and the clear water of clean water basin is delivered to the water outlet in filter tank through lift pump, and clear water is intake from water outlet, and the inefficacy filter membrane on the dull and stereotyped filter element is carried out back flushing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010185102.7A CN102259951B (en) | 2010-05-26 | 2010-05-26 | A kind of microfiltration film forming filter tank and filter method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010185102.7A CN102259951B (en) | 2010-05-26 | 2010-05-26 | A kind of microfiltration film forming filter tank and filter method thereof |
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| CN102259951A true CN102259951A (en) | 2011-11-30 |
| CN102259951B CN102259951B (en) | 2016-01-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10249339A (en) * | 1997-03-14 | 1998-09-22 | Maezawa Ind Inc | Immersion-type membrane filtration method and device therefor |
| JPH11192480A (en) * | 1998-01-05 | 1999-07-21 | Japan Organo Co Ltd | Device for recovering and treating waste alkaline silica polishing water |
| JP2000202219A (en) * | 1999-01-14 | 2000-07-25 | Ebara Corp | Precoating method of precoat type filtering and desalting device |
| CN2520935Y (en) * | 2001-08-22 | 2002-11-20 | 盘锦市华意环境工程有限公司 | Diatomite dynamic film ultra filtering machne |
| CN2818458Y (en) * | 2005-08-12 | 2006-09-20 | 张英利 | Automatic water treater |
-
2010
- 2010-05-26 CN CN201010185102.7A patent/CN102259951B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10249339A (en) * | 1997-03-14 | 1998-09-22 | Maezawa Ind Inc | Immersion-type membrane filtration method and device therefor |
| JPH11192480A (en) * | 1998-01-05 | 1999-07-21 | Japan Organo Co Ltd | Device for recovering and treating waste alkaline silica polishing water |
| JP2000202219A (en) * | 1999-01-14 | 2000-07-25 | Ebara Corp | Precoating method of precoat type filtering and desalting device |
| CN2520935Y (en) * | 2001-08-22 | 2002-11-20 | 盘锦市华意环境工程有限公司 | Diatomite dynamic film ultra filtering machne |
| CN2818458Y (en) * | 2005-08-12 | 2006-09-20 | 张英利 | Automatic water treater |
Non-Patent Citations (1)
| Title |
|---|
| 金伟等: "粉末活性炭在预涂膜过滤中的应用", 《中国给水排水》 * |
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Effective date of registration: 20200827 Address after: 978 Changtai Road, Gangzha District, Nantong City, Jiangsu Province, 226002 Patentee after: JIANGSU AITIEN MEMBRANE FILTRATION TECHNOLOGY Co.,Ltd. Address before: Liantang Town Qingpu District Shanghai city 201715 Zhu Feng Highway No. 3035 room 162-B Patentee before: SHANGHAI SAFBON WATER SERVICE Co.,Ltd. |
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