CN205953609U - Device that lower valency salt solution back flush alleviating milipore filter pollutes - Google Patents
Device that lower valency salt solution back flush alleviating milipore filter pollutes Download PDFInfo
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- CN205953609U CN205953609U CN201620901017.9U CN201620901017U CN205953609U CN 205953609 U CN205953609 U CN 205953609U CN 201620901017 U CN201620901017 U CN 201620901017U CN 205953609 U CN205953609 U CN 205953609U
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Abstract
Device that lower valency salt solution back flush alleviating milipore filter pollutes, it relates to a back flush and alleviates the device that the milipore filter pollutes. It will be solved and current alleviate device that the milipore filter pollutes in the application process, and there have backwashing water to be with high costs, improper engineering application's problem. The device: it includes water intaking valve, membrane cisterna, evacuation pump, vacuum valve, product water valve, suction pump, pressure sensor, clean water basin, backwashing water pond, backwashing water pump, backwash valve, air -blower, aeration valve, aeration equipment and atmospheric valve. The utility model provides a lower valency salt solution is alleviated the milipore filter as backwashing water and is polluted, environment friendly, with low costs, and suitable engineering application, and can the irreversible pollution of effective control reduces the use of chemical cleaning medicament, and the life of extension milipore filter provides technical support for ultrafiltration technology's in drinking water treatment and the reuse of reclaimed water field popularization and application.
Description
Technical field
The utility model is related to the device that Pollution of Ultrafiltration Membrane is alleviated in a kind of backwash.
Background technology
With the aggravation of water environment pollution and shortage of water resources, the process object of urban water supply constantly extends, and no longer limits to
In water source of fresh water such as traditional surface water, underground water, as bitter, seawater, secondary sedimentation tank of sewage treatment work water outlet etc. all can conducts
The target of water process.Hyperfiltration technique is the desirable technique of the increasingly serious water crisis of reply and the water standard meeting increasingly stringent
One of, but to be city because it is related to the operation stability producing large-scale that to drink water purifying plant of interest for fouling membrane.In drink
With water treatment field, backwash is intended only as a basic operation of milipore filter day-to-day operation, and often adopts in actual applications
With ultra-filtration water as backwashing water.However, ultra-filtration water is not sometimes high as the cleaning efficiency of backwashing water, particularly with
The organic contamination being formed in ultra-filtration process.Therefore, removal feelings in periodicity backwash process for the fouling membrane that organic matter causes
Condition more should receive publicity.It is true that the water quality of backwashing water affects to backwash efficiency really, and there is repugnance.
Abrahamse et al. (Journal of Membrane Science, 2008,323 (1):153-158) research show, reduce into
In water, bivalent cation or reduction backwashing water ionic strength (as ultra-pure water) can reduce milipore filter；Li(Delft:Delft
University of Technology, 2011) think that the developing result of the backwashing water containing LIS is preferable.But
The high manufacturing cost of ultra-pure water hinders its commercial Application.
Utility model content
The purpose of this utility model is to solve the existing device alleviating Pollution of Ultrafiltration Membrane in application process, existing anti-
Flushing water high cost, the problem of improper engineer applied, and provide a kind of lower valency salting liquid backwash to alleviate Pollution of Ultrafiltration Membrane
Device.
The device of Pollution of Ultrafiltration Membrane is alleviated in the backwash of lower valency salting liquid, and it includes water intaking valve, membrane cisterna, vacuum pumping pump, takes out
Vacuum valve, produce water valve, suction pump, pressure sensor, clear water reserviors, backwash pond, backwash pump, backwash valve, air blast,
Aeration valve, aerator and atmospheric valve；
The inside setting hyperfiltration membrane assembly of described membrane cisterna, the bottom setting aerator of hyperfiltration membrane assembly；The top of membrane cisterna
Set gradually vacuum-pumping pipeline, vacuum pumping valve and vacuum pumping pump；The bottom of membrane cisterna connects inlet pipeline and water intaking valve, and bottom is arranged
Atmospheric valve；Vacuum-pumping pipeline is connected with the pipeline that catchments, and the pipeline that catchments sets gradually pressure sensor, produces water valve, suction pump
And clear water reserviors；The pipeline that catchments is connected with counter-flushing pipeline, counter-flushing pipeline sets gradually backwash valve, backwash pump and
Backwash pond；It is lower valency salting liquid in backwash pond.
Principle of the present utility model：Treat that drainage passes through inlet pipeline and water intaking valve enters membrane cisterna, vacuum-pumping pipeline and product water
System is connected, treat in membrane cisterna that drainage is entered by the outside of hyperfiltration membrane assembly through suction pump inside, ultrafiltration is produced water and is come together in and catchment
Pipeline, subsequently into clear water reserviors；Lower valency salting liquid configures in backwash pond, reversely squeezes into ultrafiltration by backwash pump
In membrane module, film is carried out, imposes aeration while backwash to strengthen backwash effect；After backwash, membrane cisterna carries out portion
Divide discharge.
Principle of the present utility model：Have the advantages that：
(1) the utility model to alleviate Pollution of Ultrafiltration Membrane using lower valency salting liquid as backwashing water, due to salting liquid
Dissolving to milipore filter organic pollution etc. acts on, and largely alleviates the fouling membrane of milipore filter, especially irreversible membrane fouling
Part.Decrease the use of chemical cleaning medicament, and the service life of prolongation milipore filter, be drinking water treatment and Treated sewage reusing
In field, the popularization and application of hyperfiltration technique provide technical support.
(2) the lower valency salting liquid adopting in the utility model is environmentally friendly material, the impact to ultrafiltration membrane system
Minimum, compared to the chemical cleaning medicaments such as acid, alkali, oxidant, the corruption to ultrafiltration membrane lifetime, pipeline and valve for the lower valency salting liquid
The impact of erosion is all extremely low, similar to traditional employing ultra-filtration water as membranous system during backwashing water by being affected.
(3) in the utility model, the salinity due to backwashing water is relatively low, the salt of residual in filtration system after backwashing water
Content is computed also very low, is far below《Standards for drinking water quality》(GB5749-2006) limit value (200mg/ of sodium ion in
L), it is vented membrane cisterna like that completely not necessarily like Chemical cleaning after therefore backwashing, you can carry out the filtration in next cycle.
(4) the lower valency salting liquid adopting in the utility model is cheap, is conveniently easy to get, and stores and convenient management,
Do not need to do special process, suitable engineer applied.
Brief description
Fig. 1 is the schematic diagram of the device that Pollution of Ultrafiltration Membrane is alleviated in the backwash of the utility model middle or low price state salting liquid, wherein 1
For water intaking valve, 2 is membrane cisterna, and 3 is vacuum pumping pump, and 4 is vacuum pumping valve, and 5 is to produce water valve, and 6 is suction pump, and 7 is pressure sensor, 8
For clear water reserviors, 9 is backwash pond, and 10 is backwash pump, and 11 is backwash valve, and 12 is air blast, and 13 is aeration valve, and 14 are
Aerator, 15 is atmospheric valve.
Specific embodiment
Specific embodiment one：In conjunction with shown in Fig. 1, Pollution of Ultrafiltration Membrane is alleviated in the backwash of present embodiment lower valency salting liquid
Device, it includes water intaking valve 1, membrane cisterna 2, vacuum pumping pump 3, vacuum pumping valve 4, produces water valve 5, suction pump 6, pressure sensor 7, clear
Pond 8, backwash pond 9, backwash pump 10, backwash valve 11, air blast 12, aeration valve 13, aerator 14 and emptying
Valve 15；
The inside setting hyperfiltration membrane assembly of described membrane cisterna 2, the bottom setting aerator 14 of hyperfiltration membrane assembly；Membrane cisterna 2
Top sets gradually vacuum-pumping pipeline, vacuum pumping valve 4 and vacuum pumping pump 3；The bottom of membrane cisterna 2 connects inlet pipeline and water intaking valve 1,
Bottom installation of relief valve 15；Vacuum-pumping pipeline is connected with the pipeline that catchments, and the pipeline that catchments sets gradually pressure sensor 7, produces
Water valve 5, suction pump 6 and clear water reserviors 8；The pipeline that catchments is connected with counter-flushing pipeline, and counter-flushing pipeline sets gradually backwash
Valve 11, backwash pump 10 and backwash pond 9；It is lower valency salting liquid in backwash pond 9.
Inlet pipeline and water intaking valve 1 composition water inlet system in present embodiment；
Vacuum-pumping pipeline, vacuum pumping pump 3 and vacuum pumping valve 4 composition pumped vacuum systems；
Catchment pipeline, product water valve 5, suction pump 6 and clear water reserviors 8 composition water production system；
Counter-flushing pipeline, backwash valve 11, backwash pump 10 and backwash pond 9 composition water backwashing system；
Aerator 14, air blast 12, aerating pipelines and aeration valve 13 composition aerating system；
Atmospheric valve 15 and blowdown piping composition membrane cisterna blowdown system.
Treat in present embodiment that drainage passes through inlet pipeline and water intaking valve 1 enters membrane cisterna 2, vacuum-pumping pipeline and water production system
Be connected, treat in membrane cisterna 2 drainage through suction pump 6 by hyperfiltration membrane assembly outside enter inside, ultrafiltration produce water come together in collector pipe
Road, subsequently into clear water reserviors 8；Lower valency salting liquid configures in backwash pond, reversely squeezes into ultrafiltration by backwash pump
In membrane module, film is carried out, imposes aeration while backwash to strengthen backwash effect；After backwash, membrane cisterna carries out portion
Divide discharge.
In present embodiment, the purpose of aeration is strengthening backwash effect, because air bump rinse operation forms shearing on film surface
Power, is conducive to polluter being washed from film silk and entering in membrane cisterna.
Specific embodiment two：From unlike specific embodiment one, described membrane module adopts organic present embodiment
Film or inoranic membrane；Using during organic film be polyether sulfone (PES), polysulfones (PS), polyethylene (PE), polyvinyl chloride (PVC), gather inclined fluorine
Ethene (PVDF), polypropylene (PP), polyacrylonitrile (PAN) or cellulose acetate (CA)；Using during inoranic membrane be aluminum oxide
(Al2O3), zirconium oxide (ZrO2), titanium oxide (TiO2) or silica (SiO2).Other identical with specific embodiment one.
Specific embodiment three：Present embodiment from unlike specific embodiment one or two, described hyperfiltration membrane assembly
Form adopt Flat Membrane or hollow-fibre membrane；Filter type adopts immersion to filter or pressure type filters.Other with concrete reality
Apply mode one or two identical.
Specific embodiment four：Unlike one of present embodiment and specific embodiment one to three, described Flat Membrane
Or hollow-fibre membrane is milipore filter.Other identical one of with specific embodiment one to three.
Specific embodiment five：Unlike one of present embodiment and specific embodiment one to four, described milipore filter
In assembly, the filtration flux of film adopts 15-60L/ (m2H), filter cycle is 30-480min.Other and specific embodiment one
Identical to one of four.
Specific embodiment five：Unlike one of present embodiment and specific embodiment one to four, described milipore filter
In assembly, the backwash flux of film adopts 15-240L/ (m2H), the backwash duration is 30-120s.Other with concrete reality
Apply one of mode one to four identical.
Specific embodiment six：Unlike one of present embodiment and specific embodiment one to five, described aeration dress
It is set to perforated pipe aerating regulation or aeration plate aeration；The intensity (being calculated with membrane cisterna floor space) of aeration adopts 50-90m3/(m2H), expose
The gas duration is 30-150s.Other identical one of with specific embodiment one to five.
Specific embodiment seven：Unlike one of present embodiment and specific embodiment one to six, described lower valency
Salting liquid adopts the salting liquid of the monovalent cation that concentration is 0.1-10mmol/L, uses as backwashing water.Other and concrete
One of embodiment one to six is identical.
Specific embodiment eight：Unlike one of present embodiment and specific embodiment one to seven, described monovalence sun
The salting liquid of ion is sodium chloride solution, Klorvess Liquid, sodium nitrate solution, potassium nitrate solution, metabisulfite solution or potassium sulfate
Solution.Other identical one of with specific embodiment one to seven.
Specific embodiment nine：Unlike one of present embodiment and specific embodiment one to eight, described lower valency
Salting liquid can also use as backwashing water it is adaptable to bitter is regional using through simply dealt bitter or seawater
And coastal area.Other identical one of with specific embodiment one to eight.
Simply dealt bitter or seawater in present embodiment, refer to using existing desalt processing technology to bitter or
Seawater is pre-processed, and mainly removes polyvalent cation therein.
Claims (6)
1. the backwash of lower valency salting liquid alleviates the device of Pollution of Ultrafiltration Membrane it is characterised in that it includes water intaking valve (1), membrane cisterna
(2), vacuum pumping pump (3), vacuum pumping valve (4), product water valve (5), suction pump (6), pressure sensor (7), clear water reserviors (8), recoil
Washing basin (9), backwash pump (10), backwash valve (11), air blast (12), aeration valve (13), aerator (14) and put
Empty valve (15)；
Hyperfiltration membrane assembly in the inside setting of described membrane cisterna (2), bottom setting aerator (14) of hyperfiltration membrane assembly；Membrane cisterna
(2) top sets gradually vacuum-pumping pipeline, vacuum pumping valve (4) and vacuum pumping pump (3)；The bottom of membrane cisterna (2) connects water inlet pipe
Road and water intaking valve (1), bottom installation of relief valve (15)；Vacuum-pumping pipeline is connected with the pipeline that catchments, and the pipeline that catchments sets successively
Put pressure sensor (7), produce water valve (5), suction pump (6) and clear water reserviors (8)；The pipeline that catchments is connected with counter-flushing pipeline, instead
Backwash valve (11), backwash pump (10) and backwash pond (9) are set gradually on flushing line；In backwash pond (9)
For lower valency salting liquid.
2. lower valency salting liquid according to claim 1 backwash alleviates the device of Pollution of Ultrafiltration Membrane it is characterised in that institute
State hyperfiltration membrane assembly and adopt organic film or inoranic membrane；Using during organic film be polyether sulfone, polysulfones, polyethylene, polyvinyl chloride, poly- partially
PVF, polypropylene, polyacrylonitrile or cellulose acetate；Using being aluminum oxide, zirconium oxide, titanium oxide or oxidation during inoranic membrane
Silicon.
3. lower valency salting liquid according to claim 1 backwash alleviates the device of Pollution of Ultrafiltration Membrane it is characterised in that institute
The form stating hyperfiltration membrane assembly adopts Flat Membrane or hollow-fibre membrane；Filter type adopts immersion to filter or pressure type filters.
4. lower valency salting liquid according to claim 1 backwash alleviates the device of Pollution of Ultrafiltration Membrane it is characterised in that institute
State the salting liquid that lower valency salting liquid adopts the monovalent cation that concentration is 0.1-10mmol/L, use as backwashing water.
5. lower valency salting liquid according to claim 4 backwash alleviates the device of Pollution of Ultrafiltration Membrane it is characterised in that institute
The salting liquid stating monovalent cation is sodium chloride solution, Klorvess Liquid, sodium nitrate solution, potassium nitrate solution, metabisulfite solution
Or potassium sulfate solution.
6. lower valency salting liquid according to claim 1 backwash alleviates the device of Pollution of Ultrafiltration Membrane it is characterised in that institute
State lower valency salting liquid and can also use as backwashing water it is adaptable to hardship using through simply dealt bitter or seawater
Salt water area and coastal area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620901017.9U CN205953609U (en) | 2016-08-18 | 2016-08-18 | Device that lower valency salt solution back flush alleviating milipore filter pollutes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620901017.9U CN205953609U (en) | 2016-08-18 | 2016-08-18 | Device that lower valency salt solution back flush alleviating milipore filter pollutes |
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| Publication Number | Publication Date |
|---|---|
| CN205953609U true CN205953609U (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620901017.9U Active CN205953609U (en) | 2016-08-18 | 2016-08-18 | Device that lower valency salt solution back flush alleviating milipore filter pollutes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115851A (en) * | 2016-08-18 | 2016-11-16 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Device and the application process thereof of Pollution of Ultrafiltration Membrane is alleviated in lower valency saline solution backwash |
-
2016
- 2016-08-18 CN CN201620901017.9U patent/CN205953609U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115851A (en) * | 2016-08-18 | 2016-11-16 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Device and the application process thereof of Pollution of Ultrafiltration Membrane is alleviated in lower valency saline solution backwash |
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| GR01 | Patent grant |