CN207324522U - A kind of cleaning device of landfill leachate hyperfiltration membrane assembly - Google Patents
A kind of cleaning device of landfill leachate hyperfiltration membrane assembly Download PDFInfo
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- CN207324522U CN207324522U CN201721188071.4U CN201721188071U CN207324522U CN 207324522 U CN207324522 U CN 207324522U CN 201721188071 U CN201721188071 U CN 201721188071U CN 207324522 U CN207324522 U CN 207324522U
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- acid solution
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- lye
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Abstract
The utility model discloses a kind of cleaning device of landfill leachate hyperfiltration membrane assembly, including hyperfiltration membrane assembly tube body, lye tank, acid solution case, filtered water tank, lye flushing pump, acid solution flushing pump, clear water flushing pump, feed liquor four-way union and go out liquid four-way union, four mouths of pipe of feed liquor four-way union are connected by pipeline with lye tank, acid solution case, filtered water tank and hyperfiltration membrane assembly tube body respectively；Four mouths of pipe for going out liquid four-way union are connected by pipeline with lye tank, acid solution case, filtered water tank and hyperfiltration membrane assembly tube body；Lye flushing pump is arranged in lye outlet pipe, and acid solution flushing pump is arranged in acid solution outlet pipe, and clear water flushing pump is arranged in clear water outlet pipe；Valve is both provided with each pipeline.The device can be directed to the landfill leachate adjustment cleaning sequence of heterogeneity, effectively improve cleaning performance, recover the performance of hyperfiltration membrane assembly, ensure the stable of ultrafiltration membrane system.
Description
Technical field
It the utility model is related to the technical field of membrane to water and wastewater treatment and purification, more particularly to a kind of landfill leachate
The cleaning device of hyperfiltration membrane assembly.
Background technology
Membrane separation technique (Membrane Separation Technique) is an emerging high efficient separation technology,
By internationally recognized at the end of the 20th century to a most promising great high production tech of 21 century mid-term.Hyperfiltration technique is
60th, a kind of membrane separation technique to grow up the seventies, its basic principle are to separate, carry using fenestra selectivity sieve performance
Pure and mild condensed matter, compared with traditional separation method, hyperfiltration technique have energy consumption is low, single-stage separative efficiency is high, equipment is simple,
Pollution-free, the features such as high selectivity and device are flexible, application prospect is very broad.Tubular ultra-filtration membrane system is with PVDF, PES etc.
A diameter of 5mm~the 12.7mm of membrane tube is made by wound membrane technique for raw material, what the molecular weight that shuts off did not waited for 5000~250000
Tubular ultra-filtration membrane core is assembled into membrane module, is widely used in refuse leachate, oily waste water, electronics waste water, pharmacy waste water, coking are given up
The feed separation purifying of the numerous areas such as the high concentration such as water Industrial Waste Water Treatments and food, zymotic fluid, tea beverage.But dividing
From process especially refuse leachate processing in, biochemical sludge, metal inorganic salt and organic salt, grease type organic, suspended matter,
Complicated colloidal substance etc. is easily accumulated in ultrafiltration membrane surface, can cause Pollution of Ultrafiltration Membrane, and permeant flux declines, or even blocks film
Pipe, from system pressure rise, the reduction of cross-flow flow velocity, the increase of high-pressure pump load is caused, system energy consumption raises.In order to ensure ultrafiltration membrane
Performance and system normal operation, it is necessary to periodically be cleaned to ultrafiltration membrane.
The cleaning method of ultrafiltration membrane mainly has two major class of physical cleaning and chemical cleaning at present, the component in landfill leachate
Complexity, physical cleaning mode cleaning performance is poor, substantially inapplicable, clear generally using chemistry currently for landfill leachate ultrafiltration membrane
Wash.The pollutant structure that is adhered on landfill leachate ultrafiltration membrane, complicated component, practice have shown that, especially metal cation and have
The complicated cladding state material of the formation such as organic pollutants, flocculant and microorganism, cleans formula of liquid to ultrafiltration membrane and cleaning sequence is outstanding
For sensitivity, removed it is difficult to pass through single chemistry cleaning way.
Utility model content
The purpose of this utility model is to provide a kind of landfill leachate ultrafiltration membrane cleaning device, can be directed to heterogeneity
Landfill leachate adjusts cleaning sequence, effectively improves cleaning performance, recovers the performance of hyperfiltration membrane assembly, ensure ultrafiltration membrane system
It is stable.
The utility model is achieved through the following technical solutions：
A kind of cleaning device of landfill leachate hyperfiltration membrane assembly, including hyperfiltration membrane assembly tube body, lye tank, acid solution case,
Filtered water tank, lye flushing pump, acid solution flushing pump, clear water flushing pump, feed liquor four-way union and go out liquid four-way union, it is described into
First mouth of pipe of liquid four-way union is connected by lye outlet pipe with lye tank, the second pipe of the feed liquor four-way union
Mouthful connected by acid solution outlet pipe with acid solution case, the 3rd mouth of pipe of the feed liquor four-way union by clear water outlet pipe and
Filtered water tank connects, and the 4th mouth of pipe of the feed liquor four-way union passes through input duct and one end phase of hyperfiltration membrane assembly tube body
Even；It is described go out liquid four-way union first mouth of pipe connected by lye reflux line with lye tank, it is described go out liquid four-way pipe connector
Head second mouth of pipe connected by acid solution reflux line with acid solution case, it is described go out liquid four-way union the 3rd mouth of pipe pass through clear water
Reflux line is connected with filtered water tank, it is described go out liquid four-way union the 4th mouth of pipe pass through outlet pipe and hyperfiltration membrane assembly tube body
The other end be connected；The lye flushing pump is arranged in lye outlet pipe, and the acid solution flushing pump is arranged on acid solution outlet pipe
On, the clear water flushing pump is arranged in clear water outlet pipe；The lye outlet pipe, acid solution outlet pipe, clear water outlet tube
Valve is both provided with road, input duct, lye reflux line, acid solution reflux line, clear water reflux line and outlet pipe.
In specific embodiment, electric heater is both provided with the lye tank and acid solution case.
In specific embodiment, thermometer and pH meter are both provided with the lye outlet pipe and acid solution outlet pipe.
In specific embodiment, pH meter is provided with the clear water reflux line.
In specific embodiment, the valve is PVC ball valves.
The beneficial effects of the utility model are：
1st, practice have shown that, the structure of attachment and the close phase of specific component of landfill leachate on landfill leachate ultrafiltration membrane
Close, when in landfill leachate major pollutants based on the organic matters such as fatty acid, Humus, amino acid, heavy metal ion,
When ammonia nitrogen class mineral concentration relative amount is relatively low, attachment is usually the complexity that Coated with Organic Matter inorganic matter is formed on ultrafiltration membrane
Structure, is exposed inorganic after using first alkali cleaning organic matter is peeled off the Coated with Organic Matter layer stripping of the labyrinth, then pickling
The cleaning sequence that thing removes, can effectively remove the attachment of this labyrinth, so as to improve the penetrating amount of ultrafiltration membrane；
And in the landfill leachate major pollutants based on heavy metal ion, ammonia nitrogen class inorganic matter, and fatty acid, Humus,
For amino acid when organic concentration relative amount is relatively low, attachment is usually answering for inorganic matter cladding organic matter formation on ultrafiltration membrane
Miscellaneous structure, is exposed using inorganic matter clad stripping of the first pickling by the labyrinth, then alkali cleaning is used after inorganic matter is peeled off
Organic matter removal cleaning sequence, the attachment of this labyrinth can effectively be removed, so as to improve ultrafiltration membrane
Penetrating amount.The landfill leachate ultrafiltration membrane cleaning device of the utility model, the landfill leachate that can be directed to heterogeneity adjust
Cleaning sequence, effectively improves cleaning performance, recovers the performance of hyperfiltration membrane assembly, ensures the stable of ultrafiltration membrane system.
Brief description of the drawings
By that will become and the specific embodiment part provided, the feature and advantage of the utility model referring to the drawings
It is easier to understand, in the accompanying drawings：
Fig. 1 is the structure diagram of the cleaning device of the landfill leachate hyperfiltration membrane assembly of the utility model.
In Fig. 1：1st, hyperfiltration membrane assembly tube body；2nd, lye tank；3rd, acid solution case；4th, filtered water tank；5th, lye flushing pump；6th, acid solution
Flushing pump；7th, clear water flushing pump；8th, feed liquor four-way union；9th, liquid four-way union is gone out；10th, lye outlet pipe；11st, acid solution
Outlet pipe；12nd, clear water outlet pipe；13rd, input duct；14th, lye reflux line；15th, acid solution reflux line；16th, clear water
Reflux line；17th, outlet pipe；18th, valve；19th, electric heater；20th, thermometer；21st, pH meter.
Embodiment
The illustrative embodiments of the utility model are described in detail with reference to the accompanying drawings.To illustrative embodiments
Description merely for the sake of demonstration purpose, and be definitely not limitation to the utility model and its application or usage.
Embodiment 1：
Referring to Fig. 1, a kind of cleaning device specifically for landfill leachate hyperfiltration membrane assembly, including hyperfiltration membrane assembly tube body
1st, lye tank 2, acid solution case 3, filtered water tank 4, lye flushing pump 5, acid solution flushing pump 6, clear water flushing pump 7, feed liquor four-way union 8
With go out liquid four-way union 9, first mouth of pipe of feed liquor four-way union 8 is connected by lye outlet pipe 10 with lye tank 2, into
Second mouth of pipe of liquid four-way union 8 is connected by acid solution outlet pipe 11 with acid solution case 3, and the 3rd of feed liquor four-way union 8 the
The mouth of pipe is connected by clear water outlet pipe 12 with filtered water tank 4, the 4th mouth of pipe of feed liquor four-way union 8 by input duct 13 with
One end of hyperfiltration membrane assembly tube body 1 is connected；First mouth of pipe for going out liquid four-way union 9 passes through lye reflux line 14 and lye tank
2 connections, second mouth of pipe for going out liquid four-way union 9 are connected by acid solution reflux line 15 with acid solution case 3, go out liquid four-way union
9 the 3rd mouth of pipe is connected by clear water reflux line 16 with filtered water tank 4, goes out the 4th mouth of pipe of liquid four-way union 9 by going out liquid
Pipeline 17 is connected with the other end of hyperfiltration membrane assembly tube body 1；Lye flushing pump 5 is arranged in lye outlet pipe 10, and acid solution is rinsed
Pump 6 is arranged in acid solution outlet pipe 11, and clear water flushing pump 7 is arranged in clear water outlet pipe 12；Lye outlet pipe 10, acid solution go out
Liquid pipe road 11, clear water outlet pipe 12, input duct 13, lye reflux line 14, acid solution reflux line 15, clear water reflux line
16 and outlet pipe 17 on be both provided with valve 18.
Further, it is both provided with electric heater 19 in lye tank 2 and acid solution case 3.
Further, thermometer 20 and pH meter 21 are both provided with lye outlet pipe 10 and acid solution outlet pipe 11.
Further, pH meter 21 is provided with clear water reflux line 16.
Further, valve 18 is PVC ball valves.
Using 1：
Contaminated landfill leachate hyperfiltration membrane assembly is cleaned using the cleaning device of the present embodiment, which oozes
Filtrate hyperfiltration membrane assembly, material are Kynoar, and molecular cut off is 100000 dalton, and the method for operation uses cross-current type mistake
Filter.After testing, in the landfill leachate filtered, major pollutants using the organic matters such as fatty acid, Humus, amino acid as
Main, heavy metal ion, ammonia nitrogen class mineral concentration relative amount are relatively low.The first of the landfill leachate is filtered in hyperfiltration membrane assembly
Phase, hyperfiltration membrane assembly operating pressure 5.7bar, permeant flux 16m3/ h, filtering spam percolate for a period of time after, ultrafiltration membrane
The operating pressure of component rises to 6.5bar, and permeant flux drops to 10m3/ h, illustrates that hyperfiltration membrane assembly attachment is more, through inspection
Survey, attachment is mainly the labyrinth that Coated with Organic Matter inorganic matter is formed on ultrafiltration membrane.
Cleaning method comprises the following steps：
(1) prepare the alkaline cleaner formed with sodium hydroxide, sodium hypochlorite, dodecyl sodium sulfate and water and inject alkali
In liquid case 2, wherein the mass fraction of sodium hydroxide is 0.3%, and the mass fraction of sodium hypochlorite is 0.15%, dodecyl sodium sulfonate
O.06% the mass fraction of sodium is；Prepare the acidic cleaner formed with hydrochloric acid, citric acid and water and inject acid solution case 3, wherein,
The concentration of hydrochloric acid is 0.5%, and the mass fraction of citric acid is 2%.
(2) close on acid solution outlet pipe 11, clear water outlet pipe 12, acid solution reflux line 15 and clear water reflux line 16
Ball valve, open the ball valve in lye outlet pipe 10, input duct 13, lye reflux line 14 and outlet pipe 17；By alkali
Alkaline cleaner temperature in liquid case 2 is heated to 38 DEG C or so, by lye flushing pump 5 by lye tank 2 heat after alkalescence
Cleaning agent is pumped into hyperfiltration membrane assembly tube body 1 along lye outlet pipe 10, input duct 13, and alkaline cleaner is to hyperfiltration membrane assembly
After being rinsed, it is back to along outlet pipe 17, lye reflux line 14 in lye tank 2, circulation according to this carries out alkali cleaning；Circulation alkali
During washing, by the pH meter 21 in lye outlet pipe 10, every the pH value of 10min detection alkaline cleaners, pH value exceeds
When 10~12, into lye tank 2 sodium hydroxide is added until the pH value of alkaline cleaner reaches 10~12, altogether alkali cleaning 8h.
(3) after alkali cleaning, lye outlet pipe 10, acid solution outlet pipe 11, lye reflux line 14 and acid solution are closed
Ball valve on reflux line 15, is opened in clear water outlet pipe 12, input duct 13, clear water reflux line 16 and outlet pipe 17
Ball valve；Clear water in filtered water tank 4 is pumped into by ultrafiltration membrane along clear water outlet pipe 12, input duct 13 by clear water flushing pump 7
In component tube body 1, after being cleaned to hyperfiltration membrane assembly, filtered water tank 4 is back to along outlet pipe 17, clear water reflux line 16
In, by the pH of the detection reflux clear water of pH meter 21 on clear water reflux line 16, rinsed to clear water is stopped close to after neutrality.
(4) close on lye outlet pipe 10, clear water outlet pipe 12, lye reflux line 14 and clear water reflux line 16
Ball valve, open the ball valve in acid solution outlet pipe 11, input duct 13, acid solution reflux line 15 and outlet pipe 17；By acid
Acidic cleaner temperature in liquid case 3 is heated to 38 DEG C or so, by acid solution flushing pump 6 that the acidic cleaner edge after heating is sour
Liquid outlet pipe 11, input duct 13 are pumped into hyperfiltration membrane assembly tube body 1, and pickling agent is rinsed hyperfiltration membrane assembly
Afterwards, it is back to along outlet pipe 17, acid solution reflux line 15 in acid solution case 3, circulation according to this carries out pickling；Cycle pickling process
In, by the pH meter 21 in acid solution outlet pipe 11, the pH value of acidic cleaner is detected every 10min, when pH value exceeds 2~3,
Hydrochloric acid is added into acid solution case 3 until the pH value of acidic cleaner reaches 2~3, altogether pickling 5h.
(5) after pickling, lye outlet pipe 10, acid solution outlet pipe 11, lye reflux line 14 and acid solution are closed
Ball valve on reflux line 15, is opened in clear water outlet pipe 12, input duct 13, clear water reflux line 16 and outlet pipe 17
Ball valve；Clear water in filtered water tank 4 is pumped into by ultrafiltration membrane along clear water outlet pipe 12, input duct 13 by clear water flushing pump 7
In component tube body 1, second is carried out to hyperfiltration membrane assembly and is cleaned, is flowed back after cleaning along outlet pipe 17, clear water reflux line 16
Into filtered water tank 4, by the pH of the detection reflux clear water of pH meter 21 on clear water reflux line 16, stop clear water to close to after neutrality
Rinse.
After testing, after above-mentioned cleaning treatment, hyperfiltration membrane assembly continues filtering spam percolate, and ultrafiltration operating pressure is fallen after rise
To 5.8bar, permeant flux recovers to 15m3/ h, illustrates that cleaning performance is good.
Using 2：
Contaminated landfill leachate hyperfiltration membrane assembly is cleaned using the cleaning device of the present embodiment, which oozes
Filtrate hyperfiltration membrane assembly, material are Kynoar, and molecular cut off is 100000 dalton, and the method for operation uses cross-current type mistake
Filter.After testing, in the landfill leachate filtered, major pollutants are based on heavy metal ion, ammonia nitrogen class inorganic matter, aliphatic acid
The organic concentration relative amount such as class, Humus, amino acid is relatively low.The first of the landfill leachate is filtered in hyperfiltration membrane assembly
Phase, hyperfiltration membrane assembly operating pressure 5.6bar, permeant flux 15m3/ h, filtering spam percolate for a period of time after, ultrafiltration membrane
The operating pressure of component rises to 6.5bar, and permeant flux drops to 10m3/ h, illustrates that hyperfiltration membrane assembly attachment is more, through inspection
Survey, attachment is mainly the labyrinth that inorganic matter cladding organic matter is formed on ultrafiltration membrane.
Cleaning method comprises the following steps：
(1) prepare the alkaline cleaner formed with sodium hydroxide, sodium hypochlorite, dodecyl sodium sulfate and water and inject alkali
In liquid case 2, wherein the mass fraction of sodium hydroxide is 0.3%, and the mass fraction of sodium hypochlorite is 0.15%, dodecyl sodium sulfonate
The mass fraction of sodium is 0.06%；Prepare the acidic cleaner formed with hydrochloric acid, citric acid and water and inject acid solution case 3, wherein,
The concentration of hydrochloric acid is 0.5%, and the mass fraction of citric acid is 2%.
(2) close on lye outlet pipe 10, clear water outlet pipe 12, lye reflux line 14 and clear water reflux line 16
Ball valve, open the ball valve in acid solution outlet pipe 11, input duct 13, acid solution reflux line 15 and outlet pipe 17；By acid
Acidic cleaner temperature in liquid case 3 is heated to 38 DEG C or so, by acid solution flushing pump 6 that the acidic cleaner edge after heating is sour
Liquid outlet pipe 11, input duct 13 are pumped into hyperfiltration membrane assembly tube body 1, and pickling agent is rinsed hyperfiltration membrane assembly
Afterwards, it is back to along outlet pipe 17, acid solution reflux line 15 in acid solution case 3, circulation according to this carries out pickling；Cycle pickling process
In, by the pH meter 21 in acid solution outlet pipe 11, the pH value of acidic cleaner is detected every 10min, when pH value exceeds 2~3,
Hydrochloric acid is added into acid solution case 3 until the pH value of acidic cleaner reaches 2~3, altogether pickling 8h.
(3) after pickling, lye outlet pipe 10, acid solution outlet pipe 11, lye reflux line 14 and acid solution are closed
Ball valve on reflux line 15, is opened in clear water outlet pipe 12, input duct 13, clear water reflux line 16 and outlet pipe 17
Ball valve；Clear water in filtered water tank 4 is pumped into by ultrafiltration membrane along clear water outlet pipe 12, input duct 13 by clear water flushing pump 7
In component tube body 1, after being cleaned to hyperfiltration membrane assembly, filtered water tank 4 is back to along outlet pipe 17, clear water reflux line 16
In, by the pH of the detection reflux clear water of pH meter 21 on clear water reflux line 16, rinsed to clear water is stopped close to after neutrality.
(4) close on acid solution outlet pipe 11, clear water outlet pipe 12, acid solution reflux line 15 and clear water reflux line 16
Ball valve, open the ball valve in lye outlet pipe 10, input duct 13, lye reflux line 14 and outlet pipe 17；By alkali
Alkaline cleaner temperature in liquid case 2 is heated to 38 DEG C or so, by lye flushing pump 5 by lye tank 2 heat after alkalescence
Cleaning agent is pumped into hyperfiltration membrane assembly tube body 1 along lye outlet pipe 10, input duct 13, and alkaline cleaner is to hyperfiltration membrane assembly
After being rinsed, it is back to along outlet pipe 17, lye reflux line 14 in lye tank 2, circulation according to this carries out alkali cleaning；Circulation alkali
During washing, by the pH meter 21 in lye outlet pipe 10, every the pH value of 10min detection alkaline cleaners, pH value exceeds
When 10~12, into lye tank 2 sodium hydroxide is added until the pH value of alkaline cleaner reaches 10~12, altogether alkali cleaning 5h.
(5) after alkali cleaning, lye outlet pipe 10, acid solution outlet pipe 11, lye reflux line 14 and acid solution are closed
Ball valve on reflux line 15, is opened in clear water outlet pipe 12, input duct 13, clear water reflux line 16 and outlet pipe 17
Ball valve；Clear water in filtered water tank 4 is pumped into by ultrafiltration membrane along clear water outlet pipe 12, input duct 13 by clear water flushing pump 7
In component tube body 1, second is carried out to hyperfiltration membrane assembly and is cleaned, is flowed back after cleaning along outlet pipe 17, clear water reflux line 16
Into filtered water tank 4, by the pH of the detection reflux clear water of pH meter 21 on clear water reflux line 16, stop clear water to close to after neutrality
Rinse.
After testing, after above-mentioned cleaning treatment, hyperfiltration membrane assembly continues filtering spam percolate, and ultrafiltration operating pressure is fallen after rise
To 5.7bar, permeant flux recovers to 15m3/ h, illustrates that cleaning performance is good.
The above, is only the preferred embodiment of the application, any type of limitation is not done to the application, although this Shen
Please with preferred embodiment disclose as above, but and be not used to limitation the application, any person skilled in the art, is not taking off
In the range of technical scheme, make a little variation using the technology contents of the disclosure above or modification is equal to
Case study on implementation is imitated, is belonged in the range of technical solution.
Claims (5)
1. a kind of cleaning device of landfill leachate hyperfiltration membrane assembly, it is characterised in that including hyperfiltration membrane assembly tube body (1), alkali
Liquid case (2), acid solution case (3), filtered water tank (4), lye flushing pump (5), acid solution flushing pump (6), clear water flushing pump (7), feed liquor four
Connection for bbreather pipe (8) and go out liquid four-way union (9), first mouth of pipe of the feed liquor four-way union (8) passes through lye outlet tube
Road (10) is connected with lye tank (2), and second mouth of pipe of the feed liquor four-way union (8) passes through acid solution outlet pipe (11) and acid
Liquid case (3) connects, and the 3rd mouth of pipe of the feed liquor four-way union (8) is connected by clear water outlet pipe (12) and filtered water tank (4)
Logical, the 4th mouth of pipe of the feed liquor four-way union (8) passes through input duct (13) and one end phase of hyperfiltration membrane assembly tube body (1)
Even；It is described go out liquid four-way union (9) first mouth of pipe connected by lye reflux line (14) with lye tank (2), it is described go out
Second mouth of pipe of liquid four-way union (9) is connected by acid solution reflux line (15) with acid solution case (3), it is described go out liquid four-way pipe connector
3rd mouth of pipe of head (9) is connected by clear water reflux line (16) with filtered water tank (4), it is described go out liquid four-way union (9) the
Four mouths of pipe are connected by outlet pipe (17) with the other end of hyperfiltration membrane assembly tube body (1)；The lye flushing pump (5) is arranged on alkali
In liquid outlet pipe (10), the acid solution flushing pump (6) is arranged in acid solution outlet pipe (11), and the clear water flushing pump (7) sets
In in clear water outlet pipe (12)；The lye outlet pipe (10), acid solution outlet pipe (11), clear water outlet pipe (12),
Input duct (13), lye reflux line (14), acid solution reflux line (15), clear water reflux line (16) and outlet pipe (17)
On be both provided with valve (18).
2. the cleaning device of landfill leachate hyperfiltration membrane assembly according to claim 1, it is characterised in that the lye tank
(2) and in acid solution case (3) it is both provided with electric heater (19).
3. the cleaning device of landfill leachate hyperfiltration membrane assembly according to claim 2, it is characterised in that the lye goes out
Thermometer (20) and pH meter (21) are both provided with liquid pipe road (10) and acid solution outlet pipe (11).
4. the cleaning device of landfill leachate hyperfiltration membrane assembly according to claim 3, it is characterised in that the clear water returns
PH meter (21) is provided with flow tube road (16).
5. according to the cleaning device of Claims 1 to 4 any one of them landfill leachate hyperfiltration membrane assembly, it is characterised in that
The valve (18) is PVC ball valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721188071.4U CN207324522U (en) | 2017-09-15 | 2017-09-15 | A kind of cleaning device of landfill leachate hyperfiltration membrane assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721188071.4U CN207324522U (en) | 2017-09-15 | 2017-09-15 | A kind of cleaning device of landfill leachate hyperfiltration membrane assembly |
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| CN207324522U true CN207324522U (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721188071.4U Expired - Fee Related CN207324522U (en) | 2017-09-15 | 2017-09-15 | A kind of cleaning device of landfill leachate hyperfiltration membrane assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107456875A (en) * | 2017-09-15 | 2017-12-12 | 何锦宸 | A kind of cleaning method and cleaning device of percolate hyperfiltration membrane assembly |
| CN110759432A (en) * | 2019-11-29 | 2020-02-07 | 江苏大储宝环境科技有限公司 | Water purifier ultrafiltration membrane cleaning system and cleaning method |
-
2017
- 2017-09-15 CN CN201721188071.4U patent/CN207324522U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107456875A (en) * | 2017-09-15 | 2017-12-12 | 何锦宸 | A kind of cleaning method and cleaning device of percolate hyperfiltration membrane assembly |
| CN110759432A (en) * | 2019-11-29 | 2020-02-07 | 江苏大储宝环境科技有限公司 | Water purifier ultrafiltration membrane cleaning system and cleaning method |
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Granted publication date: 20180508 Termination date: 20200915 |