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Dab tsi yog NF Membrane Element

 

Nanofiltration membrane (NF membrane) yog lub siab-tsav membrane kua sib cais tshuab nyob nruab nrab ntawm rov qab osmosis thiab ultrafiltration. UltraClean muaj NF daim nyias nyias nrog sib txawv molecular hnyav txiav tawm ntawm 90, 150, 280 rau 500 Dalton, uas tuaj yeem ua tau raws li qhov xav tau rau ntau hom txheej txheem sib cais. Kev xaiv cais ntawm qee cov ntsev los yog cov organics ntawm cov kev khiav hauj lwm tsis tshua muaj siab muab cov khoom lag luam zoo nanofiltration membrane rau cov dej ntshiab thiab kev lag luam tshuaj zoo. Nanofiltration (NF) yog ib lub tshuab ua kua membrane sib cais sib koom ntau yam ntxwv nrog rov qab osmosis (RO). Tsis zoo li RO, uas muaj kev tsis lees paub zoo ntawm txhua qhov kev daws teeb meem, NF muab kev tsis lees paub ntau yam ions, xws li calcium, thiab tsis kam lees ntawm monovalent ions, xws li chloride.

 

Qhov zoo ntawm NF Membrane Element

 

 

Ib qho txiaj ntsig tseem ceeb ntawm kev ua haujlwm siab NF daim nyias nyias yog lawv lub peev xwm los tshem tawm cov ntsev yaj, hlau, thiab lwm yam kab mob los ntawm dej. Tsis zoo li cov txheej txheem lim dej ib txwm siv, uas tuaj yeem tso tseg cov kab mob seem, NF daim nyias nyias muaj peev xwm tshem tawm cov tshuaj no mus rau qib qis, ua kom cov dej huv huv rau tib neeg noj thiab lwm yam kev siv.

 

Lwm qhov zoo ntawm NF membranes yog lawv cov kev xaiv siab. Qhov no txhais tau hais tias lawv tuaj yeem tsim los txhawm rau txhawm rau txhawm rau tiv thaiv cov kab mob tshwj xeeb, xws li cov hlau hnyav lossis tshuaj, thaum tawm hauv cov khoom tsim nyog, xws li cov zaub mov, hauv dej. Qhov no ua rau lawv xaiv qhov zoo tshaj plaws rau kev lim dej rau cov ntawv thov tshwj xeeb, xws li kev tsim tshuaj lossis kev ua zaub mov thiab dej haus.

 

Lub siab-precision xwm ntawm NF daim nyias nyias tseem muaj kev cuam tshuam hauv lawv lub peev xwm los tswj qhov loj ntawm qhov pores hauv daim nyias nyias. Qhov no tso cai rau kev tswj xyuas meej ntawm cov khoom uas tuaj yeem dhau los ntawm daim nyias nyias thiab ua kom huv. Los ntawm kev kho qhov loj ntawm qhov pores, cov tuam ntxhab tuaj yeem tsim NF daim nyias nyias uas zoo rau kev siv sib txawv, xws li tshem tawm cov kab mob tshwj xeeb lossis khaws cov khoom tsim nyog hauv dej.

 

Vim Li Cas Xaiv Peb
 
 
 

Peb lub Hoobkas

Proshare Innovation Suzhou tsom mus rau kev ua tiav ntawm peb tiam ntawm Nano-composite nyias zaj duab xis hom high-end thim rov qab osmosis thiab nanofiltration membrane TFN R & D thiab ntau lawm, nyob rau hauv 10 xyoo dhau los tau ua tiav txoj kev loj hlob sai, lwm txoj rau imported membrane khoom, ruaj khov. daim ntawv thov nyob rau hauv textile wastewater, khib nyiab leachate, siab ntsev thiab siab COD khib nyiab, thiab lwm yam kev tiv thaiv ib puag ncig teb.

 
 

Siv dav

PSI cov khoom tuaj yeem siv dav hauv kev kho dej khib nyiab, desalination, thiab cov dej ntshiab, xws li hluav taws xob, steel, electronics, electroplating, landfill leachate, petrochemicals, thee chemicals, thermal power, textile printing and dyeing, pulp thiab paper, pharmaceuticals , kev kho dej hauv nroog, biochemical technology, khoom noj & dej haus, aerospace thiab lwm yam.

 
 

Peb Cov Khoom

Rov qab Osmosis Membrane Element, NF Membrane ntsiab lus, Nanofiltration Membrane Element, Loose Nanofiltration Membrane Element, Compact Ultrafiltration Membrane Element, Tshwj xeeb Membrane Element rau kev lag luam, Brackish Water Osmosis Membrane Element, Desalination RO Membrane Element, Ultra-Treat Osmosis Element Khoom siv thiab System, Anti-Fouling RO Membrane Elements.

 
 

Peb Daim Ntawv Pov Thawj

ROHS daim ntawv pov thawj, IS09001 daim ntawv pov thawj zoo, Environmental
daim ntawv pov thawj kev tswj hwm kev noj qab haus huv, kev tswj hwm kev nyab xeeb daim ntawv pov thawj, Cov qauv siv hluav taws xob patent daim ntawv pov thawj, Kev tsim khoom siv patent ntawm ntau txheej RO membrane, Invention patent ntawm daim nyias nyias tsim.

 

 

Yuav Ua Li Cas Ntxiv Cov Cycle Ntxuav ntawm NF Membrane Element

Nce kev kho mob

Kev nce cov txheej txheem pretreatment feem ntau yog siv ntev tshaj plaws, thiab cov dej nyoos tuaj yeem kho ua ntej los ntawm cov txheej txheem xws li cov ntxaij lim dej ntau thiab ultrafiltration membranes los txhim kho cov dej zoo, uas tuaj yeem txo cov pa phem ntawm nanofiltration membrane cov ntsiab lus.

Ntxiv kua qaub

Lub CaCO3 nyob rau hauv feem ntau cov dej saum npoo av thiab hauv av yuav luag saturated. Yog li ntawd, los ntawm kev ntxiv H nplooj rau hauv cov kua qaub, cov tshuaj sib npaug tuaj yeem hloov mus rau sab laug kom cov calcium carbonate nyob rau hauv lub xeev yaj. Qhov zoo ntawm cov kua qaub siv yuav tsum yog qib zaub mov. Nyob rau hauv ntau lub teb chaws thiab cheeb tsam, sulfuric acid yog siv yooj yim dua li hydrochloric acid, tab sis ntawm qhov tod tes, cov ntsiab lus ntawm sulfate radicals hauv dej muaj zog nce. Raws li qhov ntsuas sulfate muaj kev txhawj xeeb, qhov teeb meem yuav loj heev.

NF98 Series Multilayer Composite Membrane
Nanofiltration Membrane Element

Ntxiv antiscalant

Scale inhibitors tuaj yeem siv los tswj carbonate nplai, sulfate nplai, thiab calcium fluoride nplai. Feem ntau muaj peb hom scale inhibitors: sodium hexametaphosphate (SHMP), organic phosphate, thiab polyacrylate. Nws yog qhov tsim nyog rau kev tiv thaiv qhov ntsuas ntawm insoluble aluminium thiab hlau, thiab lub siab molecular hnyav polyacrylate tuaj yeem txo qhov tsim ntawm SiO2 scaling los ntawm cov nyhuv dispersion.

Ntxiv softening resin

Na+z ion tuaj yeem siv los hloov thiab tshem tawm cov nplai cations xws li Ca2+, Ba2+, thiab Sr2+ hauv dej. Thaum kho qhov no, pH ntawm cov dej muaj zog yuav tsis hloov. Yog li ntawd, tsis muaj kev ua haujlwm degassing yog yuav tsum tau.

 

Yuav Ua Li Cas Tiv Thaiv NF Membrane Element Fouling

 

 

Teem sijhawm ntxuav
Kev tu ib txwm muaj nrog cov khoom tshwj xeeb tuaj yeem pab tiv thaiv cov kab mob fouling los ntawm kev tsim ntawm daim nyias nyias. Xyuas kom koj teem caij ntxuav kom huv si kom tau txais txiaj ntsig zoo.

 

NF daim nyias nyias cov tswv yim tu cov tswv yim tuaj yeem sib txawv nyob ntawm seb hom kab mob thiab qhov rov qab osmosis system tsim. Txoj kev ntxuav koj tuaj yeem siv tau suav nrog:

 

Kho tshuab ntxuav
Kev tu tshuab siv lub cev siv lub cev kom ntseeg tau tias cov khoom paug tawm ntawm NF daim nyias nyias thiab ntws tawm ntawm lub cev.

Qhov no yog ua tiav nrog lub siab qis (<60-psig) high-flow pump (40-gpm per 8” pressure vessel in parallel). Typically the cleaning process is done with a low pH and high pH cleaning solution selected to target the foulant or scale on the NF membrane element surface.

 

Tshuaj ntxuav
Hom kev ntxuav no siv cov tshuaj ntxuav tu uas muaj peev xwm tshem tawm cov nplai thiab cov khoom tso tawm uas tuaj yeem ua rau ntawm NF daim nyias nyias txheej. Cov tshuaj ntxuav tu yuav tsum tau xaiv raws li hom kab mob uas tshwm sim, thiab cov txheej txheem yuav tsum tau muab kom haum rau cov txheej txheem rov qab osmosis tshwj xeeb. Kev tu los ntawm theem yog pom zoo kom tsis txhob muaj kev tu tsis zoo vim qhov tsis txaus txaus.

 

Kev kho mob ua ntej
Txij li thaum NF yog txheej txheem membrane, lawv muaj feem ntau yuav ntsib NF membrane fouling yog tias tsis tau kho kom raug. Txhawm rau zam qhov no, siv cov txheej txheem pretreatment uas yuav tiv thaiv koj cov peev txheej membrane raws li hom dej pub koj ua. Cov kev xaiv ua ntej tuaj yeem suav nrog:

 

Flocculation txheej txheem
Sedimentation (lub ntiajteb txawj nqus zaum)
Multi-media filtration (MMF) thiab Coagulation nyob rau hauv rooj plaub colloidal hais
NF membrane txheej txheem
Granular Activated Carbon (GAC) kom tshem tawm cov tshuaj chlorine lossis organics
Sodium bisulfite tshem tawm cov chlorine residual
Kev hloov kho PH los pab tiv thaiv qhov ntsuas (yog tias tsim nyog)
Antiscalant los inhibit scale thiab disperse hais nyob rau hauv NF membrane caij nto
Qhov System Design
Membrane fouling kuj tuaj yeem tiv thaiv los ntawm kev tsim khoom zoo thiab tsim qauv. Ntau yam cuam tshuam rau daim nyias nyias fouling thiab ua lub luag haujlwm hauv kev ua haujlwm kom raug. Txhawm rau tiv thaiv membrane fouling, xav txog cov kev hloov pauv no thaum txhim kho qhov system.

 

NF Membrane Element Xaiv
Xaiv lub NF daim nyias nyias uas zoo tshaj rau koj cov txheej txheem loj thiab dej. Siv cov dej khib nyiab rau cov dej hauv qab thiab qhov dej hauv qab 10, 000 TDS thiab cov dej hauv dej hiav txwv rau cov dej hiav txwv.
Qee lwm yam khoom yuav xav txog:
Qhov pH kam rau ua ntau yam rau kev ntxuav
Ntsev tsis kam lees specification yuav tsum tau
Flux tus nqi ntsuas kom phim cov txheej txheem
Cov xwm txheej ua haujlwm
Lub kaw lus tsim tau zoo sib npaug sib txawv xws li pH, qhov kub thiab txias, kev khiav hauj lwm siab, thiab tus nqi ntws. Qhov no ua rau muaj feem ntau cov kab mob fouling tsis tuaj yeem sau rau ntawm NF daim nyias nyias.

 

Kev siv NF Membrane Element
 

Kev kho cov dej khib nyiab txhua hnub.
Daim ntawv thov kev tshawb fawb txog kev kho cov dej khib nyiab niaj hnub nrog NF membrane qhia tau hais tias NF membrane yog acid thiab alkali resistant, muaj zoo heev rejection tus nqi, muaj ib tug zoo tshem tawm ntawm hnyav hlau, thiab tsis muaj cov pa phem membrane. Nws tau kwv yees tias vim tias tus nqi khiav haujlwm ntawm NF daim nyias nyias yog qis dua li cov thev naus laus zis rov qab osmosis, nws muaj qhov zoo tshem tawm ntawm cov organic me me molecules thiab yuav npog ntau dua 90% ntawm kev kho dej khib nyiab txhua hnub.

 

Petroleum kev lag luam kev kho dej khib nyiab.
Petroleum kev lag luam dej khib nyiab feem ntau suav nrog cov dej khib nyiab uas muaj ntau yam inorganic ntsev thiab cov organic tshuaj uas tsim nyob rau hauv cov txheej txheem ntawm kev tshawb nrhiav roj av thiab kho kom zoo. Nws muaj pes tsawg leeg yog complex thiab nws nyuaj rau kho. Cov txheej txheem membrane, tshwj xeeb tshaj yog txoj kev NF, yog ua ke nrog lwm txoj kev, uas tuaj yeem kho cov dej khib nyiab zoo thiab rov qab tau cov khoom siv tau zoo. Piv txwv li, NF daim nyias nyias yog siv los cais cov roj av khib nyiab mus rau hauv cov dej uas muaj roj nplua nuj thiab theem roj-dawb brine, thiab tom qab ntawd cov roj nplua nuj tau ntxiv rau cov dej tshiab ua ntej nkag mus rau hauv cov txheej txheem ntxuav roj, uas. tsis tsuas yog rov qab cov roj crude tab sis txuag dej. Yav dhau los, kev sib xyaw ua ke ntawm thim rov qab osmosis thiab theem sib cais tau siv los kho cov dej khib nyiab los ntawm kev lag luam roj av, tab sis muaj teeb meem loj ntawm cov pa phem ntawm daim nyias nyias. Yog tias NF membrane ntxiv ua ntej rov qab osmosis, qhov teeb meem ntawm daim nyias nyias tuaj yeem daws tau. Phenol-muaj cov dej khib nyiab hauv kev lag luam roj av feem ntau muaj phenol, methyl phenol, nitrophenol thiab ntau yam hloov phenols. Cov tshuaj no muaj tshuaj lom heev thiab yuav tsum tau muab tshem tawm ua ntej lawv tawm mus. Yog tias siv NF thev naus laus zis, tsis yog tsuas yog tshem tawm tus nqi ntawm phenol xwb Nws tuaj yeem ncav cuag ntau dua 95%, thiab nws tuaj yeem tshem tawm cov khoom muaj txiaj ntsig zoo xws li cadmium, npib tsib xee, mercury, titanium thiab lwm yam hlau hnyav hauv dej khib nyiab hauv qab qis dua, thiab nws cov nqi qis dua li qhov rov qab osmosis.

 

Kev kho cov dej khib nyiab.
Txoj kev kho dej dav dav tsis tuaj yeem tshem tawm cov tshuaj tua kab uas tsis muaj molecular organic hauv cov dej qias neeg. Los ntawm kev kawm txog kev khaws cia ntawm NF daim nyias nyias rau cov tshuaj tua kab uas tsis yog phenolic, nws pom tau tias qhov kev tsis lees paub ntawm lwm cov tshuaj tua kab yog siab dua 96.7% tshwj tsis yog dichloride, thiab lub peev xwm adsorption ntawm tag nrho cov tshuaj tua kab ntawm NF membrane cuam tshuam los ntawm nws cov hydrophobicity. Qhov cuam tshuam ntawm kev sib deev. Kev siv NF los kho cov dej khib nyiab uas muaj cov tshuaj tua kab phenolic kuj zoo heev.

 

Tshuaj fiber ntau, luam ntawv thiab dyeing muaj kev kho dej khib nyiab.
NF tuaj yeem siv rau kev tshem tawm thiab rov siv cov dyes thiab cov pab cuam hauv cov kua dej ntawm cov txheej txheem luam ntawv thiab dyeing. Thaum ua cov dye polymerization slurry, vim qhov hnyav molecular ntawm feem ntau dyes yog ob peb puas mus rau ob peb txhiab, NF daim nyias nyias tuaj yeem cia qee cov ntsev inorganic los yog me me molecules hla, thiab cuam tshuam cov xim loj dua molecules. Tom qab cov xim dub slurry dhau los ntawm NF system, Dye tuaj yeem ua kom muaj txiaj ntsig, thaum lub ntsiab lus ntawm inorganic ntsev txo, cov ntsev tsis lees paub ntau dua 98%, cov xim tsis zoo yog tsawg dua 0.1%, thiab nws tuaj yeem ua haujlwm ntawm qhov kub thiab txias. Tsis tas li ntawd, NF kuj tuaj yeem siv rau kev kho thiab rov ua dua cov dej khib nyiab hauv cov txheej txheem fiber ntau.

 

Kev kho dej phwj hauv tsev.
Thaum cov txheej txheem sib xyaw ua ke ntawm biodegradation thiab tshuaj oxidation yog siv los kho cov dej phwj hauv tsev, kev noj cov oxidizing tus neeg sawv cev yog qhov loj thiab cov seem yog loj. Yog tias muaj NF qhov system ntxiv ntawm lawv kom tso cai rau cov khoom me me uas tuaj yeem degraded los ntawm cov kab mob (molecular hnyav dua 100) kom dhau, cov organic macromolecules uas tsis yog biodegradable (molecular hnyav dua 100) yuav raug cuam tshuam thiab raug oxidized thiab tom qab ntawd biodegraded. Nws tuaj yeem ua lub luag haujlwm ntawm biodegradation, txuag tus nqi ntawm cov oxidant lossis cov pa roj carbon activated, thiab txo cov ntsiab lus ntawm qhov kawg.

 

Kev kho thiab rov ua dua cov dej khib nyiab thib ob los ntawm thermal fais fab nroj tsuag.
Cov dej khib nyiab thib ob los ntawm thermal fais fab nroj tsuag feem ntau yog los ntawm cov hmoov tshauv ntxuav, tshem tawm plua plav thiab cua txias tshuab. Hom dej khib nyiab no muaj ntau cov khib nyiab pov tseg, tshauv, ntsev thiab qee cov organic teeb meem. Siv NF los kho cov dej khib nyiab no rau hauv cov dej rov siv dua. Ua ntej, siv microfiltration tshem tawm tag nrho cov khoom raug tshem tawm hauv dej, nrog ib feem ntawm 99% BOD, 98% COD, 73% tag nrho nitrogen thiab 17% tag nrho phosphorus, thaum txo tag nrho cov cheeb tsam hauv dej mus rau 3 mus rau 4. /L , Tom qab ntawd ntxiv cov kua qaub kom qis pH kom tshem tawm CO2, thiab thaum kawg desalinate los ntawm NF kom ncav cuag qhov zoo ntawm boiler dej. Eraring Power Station ntawm Pacific Thermal Power Plant hauv Australia tam sim no tau siv NF los kho cov dej khib nyiab no, kho 1,000 rau 15 000 m3 ntawm cov dej khib nyiab hauv ib hnub, uas tsis yog tsuas yog txo cov load ntawm cov dej hauv nroog, tab sis kuj tseem txuag tau cov nqi hluav taws xob thermal ua haujlwm los ntawm 800,000 US las ib xyoos.

 

Kev kho cov dej khib nyiab pov tseg.
Cov txheej txheem pickling ntawm cov nroj tsuag steel yog raus cov hlau nyob rau hauv ib tug sulfuric acid pickling tank nrog ib tug loj feem ntawm txog 20% ​​rau pickling. Raws li lub pickling zuj zus, qhov concentration ntawm sulfuric acid maj mam txo, thiab cov concentration ntawm ferrous sulfate tseem nce ntxiv. Thaum cov feem ntau ntawm sulfuric acid nyob rau hauv cov tshuaj poob mus rau 6% -8% thiab cov concentration ntawm ferrous sulfate generated tshaj 200-250 g / L, cov kua qaub Thaum lub sij hawm ntxuav tus nqi poob, lub pickling kua yuav tsum tau. hloov thiab cov kua khib nyiab pov tseg yuav tsum tau muab pov tseg. Cov hlau pickled yuav tsum tau muab yaug nrog dej huv kom tshem tawm cov kua qaub ntawm qhov chaw, uas ua rau cov dej khib nyiab pov tseg. Txhawm rau tiv thaiv ib puag ncig thiab txuag cov peev txheej, NF txheej txheem tuaj yeem siv los kho cov kua dej khib nyiab. Siv qhov sib txawv ntawm qhov tsis kam lees ntawm sulfuric acid thiab ferrous sulfate los ntawm NF daim nyias nyias, ferrous sulfate yog thawj zaug hauv cov kua concentrated, thiab tom qab ntawd cov kua concentrated raug xa mus rau lub tank txias crystallization, thiab FeSO4·7H2O txias thiab crystallized; Lub permeate tuaj yeem cuam tshuam sulfuric acid Lwm NF membrane module ntawm NF, tom qab kev cuam tshuam, yog concentrated rau hauv 20% sulfuric acid, cov kua qaub regenerated yog recycled thiab cov permeate yog tawm mus rau cov khib nyiab acid chaw nres tsheb rau kev kho ntxiv, tawm los yog rov qab. Cov txheej txheem no rov siv dua sulfuric acid thiab ferrous sulfate, thiab tib lub sijhawm paub txog lub hom phiaj ntawm kev rov ua dua tshiab thiab kev siv dav dav ntawm cov kua dej khib nyiab pov tseg thiab tso tawm cov kua qaub pov tseg.

 

Papermaking kev kho dej khib nyiab.
Siv NF membrane tshuab los hloov cov tshuaj kho ib txwm muaj peev xwm tshem tawm cov lignin tsaus nti. Cov chlorinated lignin uas tsim thaum lub sij hawm bleaching txheej txheem ntawm ntoo pulp yog tsis zoo nqi thiab yog yooj yim cuam tshuam los ntawm lub negatively charged NF membrane, thiab yuav tsis pollute lub membrane. Tsis tas li ntawd, vim tias tsis muaj qhov yuav tsum tau ua nruj me ntsis ntawm kev tshem tawm cov cations (Na +) thaum lub sijhawm kho tag nrho, kev siv thev naus laus zis rov qab osmosis zoo li tsis tsim nyog. Siv ultrafiltration / nanofiltration los kho kraft ntawv tsim cov dej khib nyiab muaj txiaj ntsig zoo.

 

Cov yam ntxwv cuam tshuam rau kev ua haujlwm ntawm NF Membrane Element

Kev kho mob ua ntej
Kev kho mob ua ntej tsim nyog tuaj yeem tshem tawm cov tshuaj loj dua thiab txo qis cov concentration hauv cov tshuaj, yog li txo qhov tsim ntawm cov txheej txheem npog.

 

Transmembrane siab (TMP)
Nrog rau kev nce siab, cov permeate flux nce sai sai thaum xub thawj, tab sis thaum lub siab tshaj qhov muaj nqis, yuav tsis muaj qhov pom tseeb nce thiab txawm tias txo qis. Qhov no yog vim hais tias qhov nce hauv siab yuav txhawb nqa ntxiv sedimentation ntawm yaj cov khoom, ua rau muaj kev tiv thaiv ntawm cov npog txheej kom pom.

Lub sij hawm lim

Nyob rau hauv tej yam kev khiav hauj lwm tej yam kev mob, lub permeate flux hloov nrog lub sij hawm yuav muab faib ua peb theem: thawj theem yog tsim theem ntawm concentration polarization nyob rau hauv ob peb feeb, uas yog manifested raws li ib tug ntse poob nyob rau hauv NF membrane caij flux; Qhov thib ob theem yog qhov poob qis hauv ib teev, uas yog tshwm sim los ntawm cov sedimentation ntawm cov khoom; ces nws nkag mus rau theem thib peb ntawm qeeb qeeb hauv ob peb teev.

Crossflow tus nqi

Nyob rau hauv ib tug tej yam ntau yam ntawm pore loj, nrog kev nce ntawm crossflow tus nqi, lub shear quab yuam ntawm lub npog txheej nce, tshem tawm cov nto sedimentation ntawm loj hais thiab yog li ua rau cov membrane flux. Txawm li cas los xij, nws kuj nce qhov feem ntawm cov khoom zoo, ua rau kom muaj kev tiv thaiv tshwj xeeb thiab txo qis hauv daim nyias nyias.

Kub

Kev cuam tshuam ntawm qhov kub thiab txias ntawm qhov permeate flux ntawm NF membrane caij feem ntau yog nyob rau hauv nws cov nyhuv ntawm viscosity thiab solubility ntawm cov tshuaj. Hauv cov tshuaj diluted, cov cawv feem ntau tshwm sim hauv nws qhov cuam tshuam rau viscosity.

 

Yuav khaws NF Membrane Elements li cas
 
Yuav ua li cas txuag NF membrane tshiab

● Cov NF membrane cov ntsiab lus tau dhau qhov kev ntsuas dej ua ntej tawm hauv lub Hoobkas, thiab khaws cia nrog 1% sodium sulfite tov, thiab tom qab ntawd lub tshuab nqus tsev ntim nrog cov hnab ntim oxygen.
● NF membrane caij yuav tsum tau khaws cia rau hauv lub xeev ntub dej txhua lub sijhawm. Txawm hais tias nws yuav tsum tau qhib tib lub pob ib ntus kom paub meej tias qhov ntau ntawm tib lub pob, nws yuav tsum tau ua nyob rau hauv lub xeev uas tsis ua rau lub hnab yas puas, thiab lub xeev no yuav tsum tau khaws cia kom txog thaum lub sijhawm siv.
● NF membrane cov ntsiab lus yog qhov zoo tshaj plaws khaws cia ntawm qhov kub thiab txias ntawm 5 txog 10 degree . Thaum khaws cia rau hauv ib qho chaw uas qhov kub thiab txias tshaj 10 degree, xaiv qhov chaw zoo-ventilated, thiab tsis txhob tshav ntuj ncaj qha, thiab qhov kub cia yuav tsum tsis pub tshaj 35 degree.
● Yog tias NF daim nyias nyias lub caij khov, lub cev puas tsuaj yuav tshwm sim, yog li siv cov txheej txheem thermal rwb thaiv tsev thiab tsis txhob khov.
● Thaum stacking NF membrane cov ntsiab lus, lub thawv ntim khoom yuav tsum tsis pub tshaj 5 txheej, thiab xyuas kom meej tias lub thawv yuav qhuav.

Yuav khaws cov khoom siv NF membrane li cas

● NF daim nyias nyias yuav tsum tau khaws cia nyob rau hauv ib qho chaw tsaus, qhov kub thiab txias yuav tsum tsis txhob siab tshaj 35 degree, thiab ncaj qha tshav ntuj yuav tsum zam.
● Muaj kev pheej hmoo ntawm kev khov thaum qhov kub thiab txias qis dua 0 degree, yog li yuav tsum ntsuas kev tiv thaiv kom khov.
● Txhawm rau tiv thaiv kev loj hlob ntawm cov kab mob hauv lub sijhawm luv luv, kev thauj mus los thiab kev ua haujlwm ntawm lub NF membrane caij, nws yog ib qho tsim nyog yuav tsum siv cov dej ntshiab los yog rov qab osmosis cov khoom dej los npaj cov tshuaj sodium sulfite (qib zaub mov) tiv thaiv nrog ib qho concentration ntawm 500 mus rau 1, 000 ppm thiab pH ntawm 3 mus rau 6 kom ntub cov khoom. Feem ntau, Na2S2O5 yog siv, uas reacts nrog dej los tsim bisulfite: Na2S2O5+H2O-2NaHSO3.
● Tom qab soaking NF daim nyias nyias nyob rau hauv lub preservation tov rau li 1 teev, nqa lub NF membrane cov ntsiab lus tawm ntawm cov tshuaj thiab ntim rau hauv ib lub hnab ntim oxygen, muab lub hnab ntim thiab sau nrog hnub ntim.
● Tom qab NF daim nyias nyias cov ntsiab lus uas yuav tsum tau khaws cia yog rov ntim dua, cov txheej txheem khaws cia zoo ib yam li cov NF membrane tshiab.
● Cov concentration thiab pH ntawm cov tshuaj preservation yuav tsum tau khaws cia nyob rau hauv lub saum toj no ntau yam, thiab yuav tsum tau xyuas tsis tu ncua. Yog tias muaj qhov sib txawv ntawm qhov sib txawv saum toj no, cov tshuaj khaws cia yuav tsum tau npaj dua.
● Cov yeeb yaj kiab yuav tsum tsis txhob qhuav nyob rau hauv txhua qhov xwm txheej.
● Tsis tas li ntawd, cov tshuaj formaldehyde nrog ib qho concentration (ntau feem pua ​​concentration) ntawm 0.2%-0.3% kuj tseem siv tau los ua cov tshuaj khaws cia. Formaldehyde yog ib tug muaj zog microbicidal tus neeg sawv cev tshaj sodium bisulfate thiab tsis muaj oxygen nyob rau hauv nws muaj pes tsawg leeg.

 

 
FAQ
 
 

Q: Dab tsi yog NF membrane caij ua los ntawm?

A: NF membrane caij feem ntau yog ua los ntawm polyamide raws li Thin Film Composites (TFC), uas yog ze rau RO daim nyias nyias hauv cov qauv tshuaj.

Q: Lub hauv paus ntsiab lus ntawm NF membrane caij yog dab tsi?

A: Nanofiltration (NF) ua haujlwm los ntawm kev siv lub twj tso kua mis siab kom nce siab ntawm cov ntsev sab ntawm daim nyias nyias thiab yuam cov dej hla lub semipermeable NF daim nyias nyias, tawm hauv yuav luag tag nrho cov ntsev yaj hauv cov dej tsis kam tom qab. Thaum tib lub sijhawm nws tuaj yeem txo cov ions monovalent los ntawm 60-80%.

Q: Cov ntaub ntawv dab tsi yog siv hauv NF membrane caij?

A: NF daim nyias nyias yog tsim los ntawm cellulose acetate blends lossis polyamide composites zoo li RO daim nyias nyias, lossis lawv tuaj yeem hloov kho cov ntaub ntawv ntawm UF daim nyias nyias xws li sulfonated polysulfone10. Membranes tseem tuaj yeem npaj los ntawm cov khoom siv tsis zoo xws li ceramics lossis hlau 3.

Q: Dab tsi yog qhov pore loj ntawm NF membrane caij?

A: NF membrane caij yog cais raws li cov txheej txheem siab-driven membrane, poob ntawm qhov rov qab osmosis (RO) thiab ultrafiltration (UF) membrane. Nws muaj qhov pore loj nyob rau hauv thaj tsam ntawm 0.2-2 nm nrog molecular hnyav txiav tawm (MWCO) los ntawm 200 txog 1000 Da.

Q: Kuv yuav xaiv kuv li cas NF membrane caij pore loj?

A: Xaiv ntawm ib qho {{0}}.22 thiab 0.45 lim los mus rau tus nqi khaws cia lossis cov khoom khaws cia uas xav tau rau koj daim ntawv thov. A 0.22 lim tau zoo rau kev ua kom tsis muaj menyuam. Lub lim 0.45 yog qhov zoo rau kev rov qab cov kab mob thiab kab mob los ntawm cov qauv.

Q: Yuav ua li cas yog NF membrane caij?

A: Feem ntau siv NF membrane cov ntsiab lus yog synthesized los ntawm cov txheej txheem hu ua theem inversion, muab nce mus rau ib tug tuab tuab (μm-ntau) membrane, los yog los ntawm interfacial polymerization, tsim ib tug nyias, xaiv txheej (nm-ntau).

Q: Dab tsi yog qhov sib txawv ntawm NF membrane caij?

A: Raws li cov khoom sib txawv, nanofiltration (NF) membranes feem ntau muab faib ua ob pawg, uas yog, organic (polymeric) thiab inorganic. Kev lag luam organic NF daim nyias nyias yog siv rau hauv ntau daim ntawv thov kev lag luam.

Q: Dab tsi yog qhov zoo ntawm NF membrane caij?

A: Qhov kom zoo dua ntawm NF dhau RO, lwm cov txheej txheem membrane uas tsis lees paub ions, yog tias NF muaj tus nqi flux ntau dua. Qhov no txhais tau hais tias tsawg dua cov ntsiab lus membrane yuav tsum tau thiab nws ua haujlwm ntawm lub twj tso kua mis qis - phaus ib square inch (psi) lossis tuav - yog li muab kev txuag nyiaj hauv cov nqi khiav haujlwm.

Q: Puas tuaj yeem NF daim nyias nyias tshem tawm TDS?

A: Kev xaiv desalination los ntawm nanofiltration (NF) yog qhov txaus siab rau ntau daim ntawv thov kev lag luam nrog rau kev rov siv hluav taws xob cog cov dej khib nyiab thiab kev kho cov dej uas muaj cov ntsiab lus siab ntawm TDS (tag nrho cov yaj yaj).

Q: Koj ua li cas ntxuav lub NF membrane caij?

A: Feem ntau siv lub cev txoj kev yog backflushing ua nrog ib tug reversed membrane ua haujlwm qhov twg cov ntws yog thawb los ntawm permeate sab mus rau sab retentate. Cov dej thim rov qab extricates cov fouling hais los ntawm qhov hws thiab loosens lub ncuav mog qab zib fouling ntawm lwm sab.

Raws li ib qho ntawm cov kev tshaj lij nf membrane caij manufacturers thiab lwm tus neeg nyob hauv Suav teb, peb tau tshwj xeeb los ntawm cov khoom zoo thiab cov kev pabcuam zoo. Thov so assured mus yuav customized nf membrane caij los ntawm peb lub hoobkas.

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