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广州海纳滤膜科技有限公司GUANGZHOU HINA MEMBRANE TECH.CO.,LTDSpecializing in water treatment processing and producing UF membrane /MBR ...
广州海纳滤膜科技有限公司GUANGZHOU HINA MEMBRANE TECH.CO.,LTDSpecializing in water treatment processing and producing UF membrane /MBR ...
广州海纳滤膜科技有限公司GUANGZHOU HINA MEMBRANE TECH.CO.,LTDSpecializing in water treatment processing and producing UF membrane /MBR ...
广州海纳滤膜科技有限公司GUANGZHOU HINA MEMBRANE TECH.CO.,LTDSpecializing in water treatment processing and producing UF membrane /MBR ...
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How to operate and maintain ultrafiltration membrane

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uf uf membrane uf membrane module uf filtration ultrafiltration ultrafiltration membrane ultrafiltration membrane module ultrafiltration module membrane membrane module membrane fitration water filters water water treatment water system water plant purification purifier purified water purification system anti-fouling low pressure operation hydrophilic colliodal cross-flow serparation permeate virus viruses concentrate feedwater feed water polyvinielydence fluoride--pvdf permeate flow particles membrane fouling 0.01um-0.1um 0.01micro uf 4040 ss housing hina membrane hina membrane filter membrane filters membrane filtration membrane system sewage treatment equipment ultrafiltration sewage treatment industrial wastewater effluent treatment ion ions drainoff waste water waste water filtration ultrafiltration modules economical and reliable solution hina modules ease of operation and installation minimal maintance low operating cost long serving life saving your time and money quality insured reverse osmosis save your cost for building it modular ultrafiltration system membrane filtration automative low maintainance cost-effective hina water system water reuse system water filters system water purifier water machine water machinery drink fresh clean pure purifier purifier for water purifier of water apparatus equipment plant system facilities machine equipment treatment treating pure clean fresh drinking drinkable purified ss frp commercial industrial home house-hold domestic high recovery uniform pore size hollow fiber hollow fiber membrane module 8" 8 inches 8 inch eight inches korea small dalton cartriage uv wastewater 10000 50000 permeable polymeric pvdf hollow fiber uf membrane coating hollow fibre membrane uf filter membrane zero purifier water purifier salt water purifier electric water purifier ro membrane module pvc water processing water conditioning strong fiber seven pore fiber mineral water pp pes ro pre-treatment equipment pure water pvc alloy e-coating membrane element polarization solution rust molecular cutoff pretreatment filter kemflo water filters main line water filter korea water filter ultrafiltration water filter home water filter 5 micro water filter italy water filter r can water filter dr. water filter bankok water filter bathroom sink water filter clean life water filter main line water filter volcanic rock water filter solvent water

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How to operate and maintain ultrafiltration membrane

  1. 1. 广州海纳滤膜科技有限公司GUANGZHOU HINA MEMBRANE TECH.CO.,LTDSpecializing in water treatment processing and producing UF membrane /MBR membrane/ROSystem/ UF plant/ MBR system for all kinds of sewage water treatment.www.gzhina.com Contact :Don Lin E-mail:don@gzhina.com Tel :86-20-36455022 Fax:86-20-36000436Operation&MaintainanceOperation&MaintainanceOperation&MaintainanceOperation&Maintainance InstrutionInstrutionInstrutionInstrution ofofofof UFUFUFUF ProductsProductsProductsProducts1.
  2. 2. 广州海纳滤膜科技有限公司GUANGZHOU HINA MEMBRANE TECH.CO.,LTDSpecializing in water treatment processing and producing UF membrane /MBR membrane/ROSystem/ UF plant/ MBR system for all kinds of sewage water treatment.www.gzhina.com Contact :Don Lin E-mail:don@gzhina.com Tel :86-20-36455022 Fax:86-20-360004362. UltrafiltrationUltrafiltrationUltrafiltrationUltrafiltration membranemembranemembranemembrane modulemodulemodulemodule runningrunningrunningrunning instructionsinstructionsinstructionsinstructionsHina ultrafiltration membrane module operates in four states: normal filtration,backwash, , chemical cleaning, and integrity testing.NormalNormalNormalNormal filtration:filtration:filtration:filtration:In the state of the normal filtration, filtration can be full amount of filtering, andmay be cross-flow filtration. In the full amount of filtering, inlet into the the Hinaultrafiltration membrane module is driven by transmembrane pressure throughthe membrane to purify. A cross-flow will form concentrated water in therunning , this concentrate all velocity along the membrane surface.Concentrated water outflow of water from the concentrated water-side of theultrafiltration membrane module, it takes away part of intercepting matter.Usually when raw water turbidity of less than 20NTU, COD is less than 5, westrongly recommend that adopt full amount of filtering. Backwashing intervalcan be designed for 30 minutes, during which, every 10 minutes positive flow10 seconds according to the change in turbidity so that the interceptedmaterial is discharged before it has not entrapped to form a hard scale on themembrane surface and resulted in highly contaminated, this facilitates thestability of the membrane flux. In the operation of ultrafiltration membranemodule, colloids, suspended solids, bacteria and others in the raw water areintercepted by membrane surface; these substances will accumulate in themembrane surface and pollute the membrane. Inorder to maintain the performance of the membrane, especially keep themembrane permeable rate stable relatively, filtered water clean or backwashthe membrane for a short time are required. Generally it requires the systemgo for 1-3 minutes ultrafiltration membrane backwash to run every 30-60minutes.Manual or automatic control program to perform are also available inbackwashing.GeneralGeneralGeneralGeneral backwashingbackwashingbackwashingbackwashing steps:steps:steps:steps:● positive flow: drained concentrated water of ultrafiltration membrane innerhole;●backwashing: flush loose or peeling of the membrane surface contaminants;●equal-pressure flushing: loose or peeling off from the membrane surfaceretentate out of the membrane module. Regular backwashing can maintain arelatively stable membrane performance, but can not make the backwash fluxreached 100% recovery.
  3. 3. 广州海纳滤膜科技有限公司GUANGZHOU HINA MEMBRANE TECH.CO.,LTDSpecializing in water treatment processing and producing UF membrane /MBR membrane/ROSystem/ UF plant/ MBR system for all kinds of sewage water treatment.www.gzhina.com Contact :Don Lin E-mail:don@gzhina.com Tel :86-20-36455022 Fax:86-20-36000436ChemicalChemicalChemicalChemical cleaningcleaningcleaningcleaning ::::With the membrane module working time extension, membrane fouling willcontinue to increase. As the membrane permeable rate will decline, to restorethe membrane flux, regular chemical cleaning of membrane module. Chemicalcleaning should select the appropriate chemical according to impurities in rawwater quality. Usually first with pickling, and then caustic wash: the picklingsolution is generally in 2% citric acid (pH = 2), the alkali eluent is 0.5% NaOH /200ppmNaClO (pH = 12).When to chemical cleaning system is determined by the operational conditionsof the system. When the system transmembrane pressure reaches0.8-0.12MPa, the system should be chemical cleaning. Adjust frequency ofpositive flow and backwashing and its running time.IntegrityIntegrityIntegrityIntegrity Testing:Testing:Testing:Testing:The hollow fiber of membrane module ruptures occasionally (broken filaments)in the process of operation of the system, thus destroying the integrity of themembrane module. The impurity in raw water will enter into the producedwater through the broken places; so it is crucial to find broken wire timely andisolate it to keep the system integrity, especially when the system is used fordrinking water treatment. To inspect single membrane module integrity,thepressure bubble test can be used to identify the integrity of the hollow fiber.Epoxy glue blocked at both ends of the broken fiber is available to make thesystem permanent isolation when found to have broken fiber. Repairedmembrane module must carry on flushing, as far as possible will enter theclean water production impurities; avoid to cause for other membrane pollution.Repaired membrane module should be flushed, try to clean up impurities intothe water production end to avoid contamination of other membrane.TheTheTheThe methodmethodmethodmethod totototo testtesttesttest thethethethe integrityintegrityintegrityintegrity ofofofof membranemembranemembranemembrane module:module:module:module:The inner hole of the filaments of the first film filled with water, drained of air inthe inner bore of the silk membrane is then added to the purification ofcompressed air from the product outlet, the gas pressure of 0.04-0.06MPa toobserve the membrane module of the membrane fiber end face, when there isa large continuous bubbles emerge from the internal bore of the membranefiber, can be determined this root membrane rupture, well marked in its tip, andthen use the same method to find the other end of the head of the silkmembrane. A head at both ends of the silk membrane simple drying process,with an epoxy glue to block both ends of the pores of the membrane, with thesystem completely isolated. (If the device is not being used for a
  4. 4. 广州海纳滤膜科技有限公司GUANGZHOU HINA MEMBRANE TECH.CO.,LTDSpecializing in water treatment processing and producing UF membrane /MBR membrane/ROSystem/ UF plant/ MBR system for all kinds of sewage water treatment.www.gzhina.com Contact :Don Lin E-mail:don@gzhina.com Tel :86-20-36455022 Fax:86-20-36000436long period of poor equipment maintenance of membrane dehydration filmwire 0.04-0.06MPa, the compressed air through the membrane cause filmdamaged the illusion, not particularly serious dehydration membrane silk canbe alcohol soaked recovery part of the flux). Cleaning, transmembranepressure range of the system design, the systems water production shouldreach the original design requirements, otherwise it should continue to carryout cleaning and chemical cleaning or shortenthe chemical cleaning3.3.3.3. PhysicalPhysicalPhysicalPhysical cleaningcleaningcleaningcleaning andandandand chemicalchemicalchemicalchemical cleaningcleaningcleaningcleaning systemsystemsystemsystemThe cleaning system is mainly composed of medicine tank, treated water tank,circulating pump. Gas mixed with water cleaning also includes air compressor.General physicalphysicalphysicalphysical cleaningcleaningcleaningcleaning can be divided into pressure flushing andbackwashing.close the treated water valve and open the concentrated watervalve to make raw water with faster than normal state flush the membranesurface to remove dirt. Backwashing is to close raw water valve and usecirculating pump, inject the treated water tank of water from the outlet waterinto the membrane module (a 100μm security filter must be installed before thebackwashing water enter the outlet water port to prevent pipes or waterpurification large particles from entering the membranemodule in the tank to cause damage or contamination of the membrane).Make the treated water according to opposite direction of the normal filteredthrough the membrane, wash away the surface of the membrane pollutants,and make them discharge from the concentrated water outlet and the inlet side.After backwashing, the immediate pressure flushing can make the trappedpollutants discharged more effectively.ChemicalChemicalChemicalChemical cleaningcleaningcleaningcleaning systemsystemsystemsystem with a circulating pump the dispensing tankcleaning fluid into the ultrafiltration system cleaning cycle and soak, rely on therole of chemicals to remove the dirt of the surface of the membrane, in order torestore themembrane of water production capacity, to maintain the design flowrequirements .

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