Nanofiltration Membranes - Tuam Tshoj Nanofiltration Membranes Chaw tsim tshuaj paus

Tsev / Cov khoom / Nanofiltration Membranes

Dab tsi yog Nanofiltration Membranes

Nanofiltration membranes yog cov txheej txheem sib cais uas muaj cov organic, nyias-film composite daim nyias nyias nrog qhov pore loj ntawm 0.1 txog 10nm. Tsis zoo li thim rov qab osmosis (RO) daim nyias nyias, uas tsis lees txais txhua qhov kev daws teeb meem, NF daim nyias nyias tuaj yeem ua haujlwm ntawm qhov qis qis thiab muab cov kev xaiv tsis zoo raws li ob qho tib si loj thiab nqi. molecular hnyav molecules, suab thaj, proteins, thiab lwm yam organic tebchaw. Nanofiltration membranes zuag qhia tag nrho kuj tseem tuaj yeem txo cov qib hardness, nitrates, sulfates, tannins, turbidity, xim, TDS, thiab theem nrab ntsev ntawm cov dej ntws.

Qhov zoo ntawm Nanofiltration Membranes

Nanofiltration membranes muaj kev xaiv siab ntawm cov kua dej me me thiab qis zog noj, ua rau lawv tsim nyog rau kev sib cais ntawm cov dej qab zib caustic los ntawm cov khoom siv hluav taws xob.

Nanofiltration membranes tau ua tiav hauv ntau qhov kev lag luam, suav nrog textile, pulp thiab ntawv, tshuaj, thiab agro-industrial, rau kev kho cov dej khib nyiab.

Kev siv cov nanofiltration membranes tso cai rau kev rov qab los thiab rov qab siv cov dej qab zib caustic, txo qhov xav tau cov tshuaj tshiab thiab txo qhov cuam tshuam ib puag ncig.

Compact Ultrafiltration Membrane Element
Lub compact ultrafiltration membrane cov ntsiab lus siv multilayer composite daim nyias nyias uas tau tshaj lij. Lub peev xwm los tiv thaiv kev ua qias tuaj zoo heev yog muab los ntawm ultra-smooth
Lub caij xoob nanofiltration membrane 8040
UNC 8040 membrane, nanofiltration
Nanofiltration Membrane Element
Nanofiltration membranes feem ntau yog cov yeeb yaj kiab sib xyaw, nrog rau lawv cov txheej txheem sib cais ntawm cov polyelectrolytes, muab qee qhov tuav tus nqi rau cov ntsev inorganic.
Compact Ultrafiltration Membrane Element
Lub compact ultrafiltration membrane cov ntsiab lus siv multilayer composite daim nyias nyias uas tau ua hauj lwm.
NF98 Series Multilayer Composite Membrane
NF98 series nanofiltration membrane caij txais cov txheej txheem multilayer composite mem-brane, Nano-theem kev cai ntawm ultra-thin hydrophilic txheej membrane tshuab muab cov peev xwm tiv thaiv kev
Nanofiltration Membrane Element
Nanofiltration membrane caij siv cov txheej txheem multilayer composite membrane thiab nano-theem kev cai ntawm ultra-thin hydrophilic txheej membrane tshuab los muab kev tiv thaiv kev ua qias tuaj
Loose Nanofiltration Membrane Element
UNF series ntawm Loose Nanofiltration lossis Compact Ultrafiltration Membrane ntsiab txais yuav pro. proprietary multilayer composite daim nyias nyias, Lub ultra-smooth thiab ultra-thin hydrophilic

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 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 and paper, pharmaceuticals , kev kho dej hauv nroog, kev siv tshuab biochemical, 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.

Kev siv Nanofiltration Membranes

Kev kho dej thiab dej khib nyiab
Qhov no yog ib qho ntawm cov chaw tseem ceeb ntawm kev tsom mus rau nanofiltration membranes. Hauv kev lag luam kho dej, nanofiltration membranes yog siv rau cov dej softening raws li lawv muaj peev xwm tshem tawm bicarbonate, magnesium, thiab calcium ions los ntawm cov dej nyuaj. Cov dej tawv yog qhov tsis xav tau vim tias cov ions no ua rau cov kav dej thiab cov khoom siv tom ntej.

Nanofiltration membranes yog siv dav hauv kev kho dej khib nyiab kom tshem tawm cov hlau hnyav, cov ntsev ntau ntau, yaj cov organic carbon (DOC), sulfates, thiab nitrates. Lawv tuaj yeem txo tag nrho cov pa roj carbon monoxide mus txog 95% los ntawm cov dej ntws tawm.

Khoom noj khoom haus thiab dej haus
Nanofiltration membranes muab ntau yam kev siv hauv kev lag luam zaub mov thiab dej haus, los ntawm purifying cov khoom siv mis nyuj thiab kua txiv hmab txiv ntoo mus rau cov kua qab zib. Lawv kuj decolonize thiab demineralize qab zib daws thiab xim brine sib cais.

Kev lag luam roj thiab roj
Nanofiltration membranes muaj peev xwm tshem tawm cov pa roj carbon dioxide los ntawm cov pa roj hauv kev lag luam roj thiab roj. Qhov no yog qhov tseem ceeb vim tias carbon dioxide hloov mus rau carbon monoxide ntawm qhov kub thiab txias thiab ua rau cov catalyst puas. Nws kuj tseem siv rau hauv kev kho dej khib nyiab ntawm cov kua dej aqueous effluent uas muaj cov roj tseem ceeb thiab lwm yam tshuaj lom.

NF98 Series Multilayer Composite Membrane

Compact Ultrafiltration Membrane Element

Pharmaceutical thiab Biotech
Nanofiltration membranes ua kom tsis muaj menyuam thiab mloog zoo rau cov tshuaj tua kab mob thiab cais cov kab mob sib kis los ntawm cov ntshav thiab ntshav.

Textile, Dyes, thiab Tawv
Kev lag luam textile siv dyes ntawm txhua yam, thiab nanofiltration membranes ua lub luag haujlwm tseem ceeb hauv dye desalting thiab concentration. Nanofiltration membranes fabricated nrog polyether sulfone thiab polyethylene glycol yog siv rau zoo dua dye rejection thiab membrane kev ua tau zoo. Hauv kev lag luam tawv, nanofiltration membranes tsis lees txais tannins.

Desalination
Tsis tas li ntawd, nanofiltration yog raug sim rau desalination pretreatment daim ntaub ntawv qhov twg ib feem loj ntawm cov tshuaj noj yog kho ua ntej nws mus txog rau theem tom ntej, zoo li RO daim nyias nyias. Nanofiltration membranes muab cov khoom siv hluav taws xob siab (NOM) tshem tawm los ntawm cov dej hiav txwv pub dej. Permeate cov kev daws teeb meem txo tus nqi ntawm lub siab xav tau nyob rau theem tom ntej thiab tus nqi ntawm fouling hauv cov khoom siv hauv qab.

Qhia tias koj muaj Fouling Nanofiltration Membrane

Nce qhov sib txawv siab
Differential siab yog hais txog lub siab poob ntawm qhov pub thiab cov concentrate ntawm nanofiltration membrane. Raws li daim nyias nyias foul, qhov sib txawv siab yuav nce thoob plaws daim nyias nyias.

Yog tias foulant adheres rau nanofiltration membrane; Yog li ntawd, yuav tsum muaj lub siab ntau dua los tsim cov phiaj xwm dej permeate. Thaum lub siab sib txawv nce, koj lub tshuab yuav tau ntsib nanofiltration membrane fouling thiab yuav tsum tau ntxuav.

Txo hauv Permeate Flux
Permeate flux txhais qhov ntau ntawm permeate tsim thaum lub sij hawm nanofiltration membrane sib cais ib chav tsev ntawm lub sij hawm thiab nanofiltration membrane cheeb tsam. Piv txwv li, 15 gfd yog hais txog tus nqi flux ntawm 15 nkas loos ib feeb ib square feet ntawm nanofiltration membrane thaj tsam. Thaum koj ntsib ib qho permeate flux poob qis, nws yog qhov qhia meej ntawm nanofiltration membrane fouling.

Dej tsis zoo
Yog tias koj cov nanofiltration membranes pom cov ntsev tsis zoo, fouling yuav raug liam. Qee zaum cov dej tsis zoo yuav yog cov tsos mob ntawm cov txheej txheem ua ntej tsis zoo, kev hloov pauv hauv cov dej zoo, thiab qhov kub thiab txias. Yog li xyuas kom koj tshawb xyuas qhov foulant muaj pes tsawg leeg vim nws tuaj yeem muab qee qhov qhia.

Nyob rau hauv rooj plaub uas cov kab mob fouling yog colloidal, ntxuav thiab txhim kho pretreatment yuav pab tau. Tab sis yog tias qhov tsis zoo ntsev tsis kam tshwm sim ib txhij nrog kev nce hauv kev khiav hauj lwm lossis qhov sib txawv, koj cov nanofiltration daim nyias nyias yuav raug scaling los yog fouling.

Nanofiltration Membranes Method thiab Installation Description

nthuav qhia Nano-filtration (ntawm NF luv luv) yog cov txheej txheem siab-tsav membrane uas, nyob rau hauv cov nqe lus ntawm kev sib cais theem, nyob ntawm ultra-filtration thiab thim rov qab osmosis.

nthuav qhia Raws li micro-filtration thiab ultra-filtration, cov nyhuv sieve yog ib qho ntawm cov qauv kev sib cais, xws li hnyav diffusion thiab electrostatic repulsion. Cov nyhuv sieve yog nyob ntawm qhov sib txawv ntawm qhov loj me thiab qhov pore txoj kab uas hla. Qhov pore loj ntawm nano-filtration membrane yog tus cwj pwm los ntawm tus nqi txiav tawm. Qhov kev txiav tawm tus nqi no yog ua raws li qhov hnyav ntawm cov khoom me me uas tuaj yeem ua tau 90% txwv los ntawm txheej txheej saum toj kawg nkaus ntawm daim nyias nyias (2 µm tuab). Tus nqi txiav tawm yog qhia hauv Dalton (Dalton=hnyav hauv grams ntawm mole ntawm lub molecule). Ib tug raug nano-filtration membrane nyob ntawm qhov ntau ntawm 150-500 Dalton, nyob ntawm seb cov qauv molecular.

nthuav qhia Nano-filtration membranes muaj qhov pores nrog qhov loj ntawm kwv yees li 1nm. Nano-filtration membranes yog tus cwj pwm raws li lawv khaws cia ntawm cov khoom thauj thiab tsis thauj khoom. Kev khaws cia ntawm nano-filtration membrane tuaj yeem txiav txim siab los ntawm kev sim ua kom pom nrog cov khoom ua ntej xaiv. Ib qho yooj yim ntsev tov (NaCl los yog Na2SO4) yog xaiv rau loaded hais. Polysaccharides (dextrines) los yog polyethylene glycols (PEG) nrog rau ntau yam molecular luj yog xaiv rau unloaded hais. Cov ntsev tuav ntawm ib txwm nano-filtration membrane yog qhov qis dua, piv txwv li, rov qab osmosis, thaum ntsev tuav yog xoom rau ultra-filtration.

nthuav qhia Ib nano-filtration membrane kuj yog ion-xaiv. Qhov no yog lub peev xwm los paub qhov txawv ntawm ntau yam ions ntawm ib leeg. Vim hais tias lub nano-filtration membrane khaws cov khoom thauj khoom hauv nws cov qauv membrane, electrostatic repulsion / Attraction rog yuav tshwm sim ntawm cov khoom hauv cov kua thiab (nano-filtration) membrane nto, uas ua rau muaj qee qhov kev xaiv ion. Raws li cov nyhuv sieve (pore loj 1 nm) thiab molecular loj ntawm chlorides (0.12 nm loj) thiab sulphates (0.23 nm loj), cov ions yuav tsum tau diffuse. los ntawm daim nyias nyias. Txawm li cas los xij, qhov khaws cia rau chlorides yog siab tshaj 90% thiab cov sulphates tsawg kawg yog 90% (tseem saib cov nqe lus ua haujlwm).

nthuav qhia Ib nano-filtration membrane tuaj yeem ua tubular, kauv lossis tiaj tus. Ib tug kauv module (saib daim duab hauv qab no) muaj polyamide membrane txheej txheej ntawm kauv daim ntawv. Nyob rau ntawm ntug ntawm daim nyias nyias, lub qhov txhab txheej yog kaw nrog lub hau. Ib tug permeate sau raj yog nyob rau hauv nruab nrab ntawm lub qhov txhab module. Tag nrho cov dej huv yog dhau los ntawm cov kauv windings thiab sau rau hauv lub raj no.

Txoj Cai Ua Haujlwm ntawm Nanofiltration Membranes

Membrane sib cais yog siv qhov sib txawv ntawm kev xaiv osmosis kev ua tau zoo ntawm txhua qhov sib xyaw ntawm cov khoom siv los ntawm daim nyias nyias, siv lub zog sab nraud los yog cov khoom siv tshuaj lom neeg raws li kev tsav tsheb sib cais, cais, ntxuav thiab ua kom cov pa roj los yog kua ntawm ob lub ntsiab lus. los yog multi-component sib tov. Teeb txoj kev. Lub membrane pore loj yog nyob rau theem nanometer, thiab cov txheej txheem membrane haum rau kev sib cais cov khoom tawg nrog ib qho hnyav molecular ntawm 200 rau 1000 thiab molecular loj li ntawm 1. nm hu ua nanofiltration (NF). Lub transmembrane siab sib txawv yuav tsum tau rau NF membrane sib cais yog feem ntau 0.5 mus rau 2.0 MPa, uas yog 0.5 mus rau 3 MPa qis dua lub siab sib txawv yuav tsum tau mus cuag tib permeation zog nrog ib tug rov qab osmosis membrane. Raws li kev khiav hauj lwm siab thiab kev sib cais txwv, NF tuaj yeem ua tau zoo nyob ntawm qhov rov qab osmosis thiab ultrafiltration. Qee zaum nanofiltration tseem hu ua "tsis tshua muaj siab rov qab osmosis" lossis "loose reverse osmosis".

Nanofiltration membranes sib cais yog cov cuab yeej kho dej ntsuab uas tuaj yeem hloov cov txheej txheem kev kho dej khib nyiab nrog cov nqi siab thiab cov txheej txheem nyuaj hauv qee yam. Nws cov yam ntxwv tshwj xeeb yog: nws tuaj yeem cuam tshuam cov organic thiab ntau yam ions nrog qhov hnyav molecular ntau dua 100, tso cai me me molecular organics thiab monovalent ions dhau mus; Nws tuaj yeem ua haujlwm hauv qhov hnyav xws li kub, kua qaub, thiab alkali, thiab tiv taus cov pa phem; tsis tshua muaj kev khiav hauj lwm siab, membrane flux High, tsis tshua muaj cov cuab yeej khiav hauj lwm nqi; tuaj yeem ua ke nrog lwm cov txheej txheem kho dej phwj tuaj ntxiv kom txo tau cov nqi thiab txhim kho kev kho mob. Hauv kev kho dej, nanofiltration membrane feem ntau yog siv los kho cov kuab tshuaj uas muaj cov dej khib nyiab, uas tuaj yeem tshem tawm cov chroma, hardness thiab tsw hauv dej. Nrog nws cov kev ua tau zoo sib cais tshwj xeeb, nanofiltration membranes tau ua tiav rau kev kho dej khib nyiab hauv kev lag luam xws li qab zib, pulp thiab ntawv, electroplating, mechanical processing, thiab rov qab cov tshuaj tiv thaiv catalysts.

Hom Nanofiltration Membrane

Polymer-based nanofiltration membranes

Polymer-based nanofiltration membranes yog cov feem ntau siv hom nanofiltration membrane vim lawv cov nqi-zoo, yooj, thiab yooj yim ntawm fabrication. Polymeric nanofiltration membranes tuaj yeem tsim los ntawm ntau yam ntaub ntawv, suav nrog polyamide, polysulfone, polyethersulfone, polyvinylidene fluoride, thiab cellulose acetate. Cov daim nyias nyias no feem ntau yog tsim los ntawm theem inversion lossis interfacial polymerization txoj kev, uas koom nrog tsim cov yeeb yaj kiab polymer ntawm cov txheej txheem ntxeem tau. Kev ua tau zoo ntawm cov ntaub ntawv polymer-based nanofiltration tuaj yeem txhim kho los ntawm kev hloov kho lawv cov chemistry saum npoo los yog qhia cov pab pawg ua haujlwm los txhim kho lawv cov kev xaiv thiab fouling tsis kam.

Ceramic-based nanofiltration membranes

Ceramic-raws li nanofiltration membranes yog tsim los ntawm cov ntaub ntawv inorganic xws li alumina, titania, zirconia, los yog silica. Cov daim nyias nyias muaj lub zog zoo heev, thermal stability, thiab tshuaj lom neeg ua haujlwm, ua rau lawv haum rau qhov kub thiab txias ib puag ncig. Ceramic nanofiltration membranes feem ntau yog tsim los ntawm sol-gel, theem inversion, lossis electrospinning txoj kev. Lub ntsiab tsis zoo ntawm ceramic-based nanofiltration membranes yog lawv cov nqi siab thiab kev txwv tsis pub siv, uas txwv tsis pub lawv siv rau cov ntawv thov tshwj xeeb.

Carbon-based nanofiltration membranes

Carbon-based nanofiltration membranes yog ib hom tshiab ntawm daim nyias nyias uas nyiam cov xim vim lawv cov khoom tshwj xeeb, xws li siab permeability, selectivity, thiab stability. Cov pa roj carbon nanofiltration membranes tuaj yeem tsim los ntawm ntau yam khoom siv carbon, nrog rau cov pa roj carbon nanotubes, graphene oxide, thiab cov pa roj carbon activated. Cov membranes no feem ntau yog tsim los ntawm kev pom los yog dip-txheej txheej, uas koom nrog kev tso tawm ntawm cov pa roj carbon txheej ntawm txheej txheej txheej txheej txheej txheej. Cov pa roj carbon-based nanofiltration membranes muaj peev xwm siv tau hauv kev kho dej, kev sib cais roj, thiab lub zog cia.

Hlau-based nanofiltration membranes

Hlau-raws li nanofiltration membranes yog tsim los ntawm cov hlau xws li stainless hlau, npib tsib xee, los yog tooj liab. Cov membranes no muaj lub zog txhua yam, tshuaj tiv thaiv, thiab thermal stability, ua rau lawv tsim nyog rau kev siv high-pressure thiab high-temperature. Hlau nanofiltration membranes feem ntau yog tsim los ntawm electroforming los yog vapor deposition txoj kev, uas koom nrog cov deposition ntawm ib tug hlau txheej ntawm ib tug ntxeem tau txheej. Hlau-raws li nanofiltration membranes muaj peev xwm siv nyob rau hauv petrochemical thiab tshuaj industries.

Qhov txawv ntawm Nanofiltration Membranes thiab Reverse Osmosis Membranes

NF yog qhov pom ntau yam ua ntej rov qab osmosis. Txawm hais tias muaj qhov sib txawv, lawv yog cov thev naus laus zis zoo sib xws.
NF yog qhov pom ntau yam ua ntej rov qab osmosis. Txawm hais tias cov thev naus laus zis zoo sib xws, lawv sib txawv hauv daim nyias nyias pore loj qauv. NF muaj qhov pore loj nyob rau hauv thaj tsam ntawm {{{0}}}.001-0.01, thiab RO muaj qhov pore loj nyob rau hauv thaj tsam ntawm 0.0001-0.001 μm. Raws li nanofiltration membranes muaj cov qauv pore loj dua li RO daim nyias nyias, lawv feem ntau xav tau lub siab qis, txhais tau tias qis zog. Ib tug loj pore loj qauv yuav feem ntau kuj ua rau qis fouling teeb meem. Txawm li cas los xij, thaum NF tsuas yog cais ntau cov ntsev, RO cais tag nrho cov ntsev. RO tshem tawm tag nrho cov organic molecules, kab mob, monovalent ions, thiab minerals. RO yog li no kuj siv los desalinate dej kom xa dej haus. Tseem, NF tuaj yeem siv los ua pretreatment ua ntej RO kom txo qis, fouling teeb meem thiab tiv thaiv daim nyias nyias.

Ntau npaum li cas yog Nanofiltration Membrane Ntxuav

Vim hais tias cov nanofiltration membrane yuav siv sij hawm ntev nyob rau hauv cov txheej txheem ntawm kev siv, cov khib nyiab tshem tawm thiab qee cov impurities hauv cov dej yuav thaiv qhov pore loj ntawm cov lim membrane nto, ua rau cov membrane thaiv, thiab lub sij hawm ntev yuav thaiv. ua rau cov dej tsim kom tsawg, thiab nws yuav cuam tshuam rau nanofiltration membrane caij. Ua rau irreversible kev puas tsuaj.

Feem ntau, kev tu lub voj voog ntawm nanofiltration membrane feem ntau yog txiav txim siab raws li kev siv cov khoom siv membrane, feem ntau yog li peb lub hlis, tab sis thaum cov dej tsim tawm ntawm cov khoom siv membrane txo qis, cov nanofiltration membrane yuav tsum tau ntxuav hauv lub sijhawm.

Kuv yuav tsum xyuam xim rau dab tsi thaum ntxuav lub nanofiltration membrane
Siv cov dej oxidant zoo uas tsis muaj cov tshuaj chlorine thiab lwm cov oxidants rau dej yaug
Thaum npaj cov tshuaj ntxuav, xyuas kom meej tias tag nrho cov tshuaj ntxuav tau zoo yaj thiab sib tov ua ntej nkag mus rau hauv lub voj voog.
After the cleaning chemicals and membrane elements are circulated, the membrane elements should be rinsed with high-quality water that does not contain residual chlorine and other oxidants (minimum temperature>20 degree).

Kub thiab PH tus nqi
Thaum lub sij hawm lub voj voog ntawm kev ntxuav, qhov kub yuav tsum tsis pub tshaj 50C ntawm pH 2-10, qhov kub yuav tsum tsis pub tshaj 35C ntawm pH 1-11, thiab qhov kub yuav tsum tsis pub tshaj 30C ntawm pH 1-12 .

Kev taw qhia ntws ntawm cov kua dej huv
Rau cov khoom uas muaj ib txoj kab uas hla ntau dua 6 ntiv tes, cov kev taw qhia ntws ntawm cov dej ntxuav yuav tsum zoo ib yam li cov kev khiav hauj lwm ib txwm siv los tiv thaiv cov khoom los ntawm kev tsim "tsoov hluav taws xob" tshwm sim, vim tias lub nplhaib thrust hauv lub nkoj siab tsuas yog ntsia ntawm cov concentrated dej kawg ntawm lub nkoj siab. Nws kuj raug pom zoo kom ua tib zoo mloog rau qhov no thaum ntxuav lub cev ntawm cov khoom me me.

Ua tib zoo ntxuav cov tshuaj detergent seem
Thaum ntxuav, ua tib zoo saib xyuas kom huv si ntxuav cov tshuaj ntxuav tes uas seem hauv daim nyias nyias. Yog tias tus neeg saib xyuas tsis tau ntxuav kom huv si, nws yooj yim heev rau cov av hauv cov txheej txheem membrane, thiab tseem ua rau lub neej ua haujlwm luv luv ntawm nanofiltration membrane. Cov tshuaj ntxuav alkaline muaj lub zog tu qis kom tshem tawm cov stains.

FAQ

Q: Dab tsi yog qhov txawv ntawm nanofiltration membranes thiab RO membrane?

A: Nanofiltration membranes tshem tawm cov kab mob phem, xws li tshuaj tua kab thiab cov organic macromolecules, thaum khaws cov zaub mov uas RO yuav tshem tawm. Nanofiltration daim nyias nyias muaj peev xwm tshem tawm cov divalent ions loj dua xws li calcium sulfate, thaum tso cai rau me me monovalent ions xws li sodium chloride kom dhau mus.

Q: Dab tsi yog nanofiltration membrane?

A: Ib qho nanofiltration (NF) daim nyias nyias 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: Puas tuaj yeem nanofiltration membranes tshem TDS?

A: Kev xaiv desalination los ntawm nanofiltration (NF) yog qhov txaus siab rau ntau daim ntawv thov kev lag luam suav nrog 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 nanofiltration membrane?

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 pores thiab loosens lub ncuav mog qab zib fouling ntawm lwm sab.

Q: Cov nanofiltration membranes puas tshem tau cov hlau hnyav?

A: Nanofiltration (NF) yog ib txoj hauv kev tshiab thiab siv tau zoo los tshem tawm cov hlau hnyav los ntawm cov dej tsis huv. Cov txheej txheem lim dej no siv cov txheej txheem semi-permeable nrog qhov pore loj ntawm 1-10 nm, tso cai rau kev tshem tawm cov hlau hnyav ions los ntawm dej thaum khaws cia cov zaub mov tseem ceeb thiab cov as-ham.

Q: Puas yog nanofiltration membranes zoo dua rov qab osmosis?

A: Nws nyob ntawm koj qhov nqhis dej. Yog tias koj xav tau cov dej ntshiab tshaj plaws, feem ntau demineralized rau cov ntawv thov tseem ceeb, RO yog koj tus yeej. Tab sis yog tias koj nyiam dej nrog tus cwj pwm ntawm tus cwj pwm thiab xav khaws cov zaub mov muaj txiaj ntsig, NF yog koj mus-rau ninja.

Q: Dab tsi yog txheej txheem ntawm nanofiltration membrane?

A: Nanofiltration yog txheej txheem kev sib cais uas muaj cov organic, nyias-film composite daim nyias nyias nrog qhov pore loj ntawm 0.1 txog 10nm. Tsis zoo li thim rov qab osmosis (RO) daim nyias nyias, uas tsis lees paub txhua qhov kev daws teeb meem, NF daim nyias nyias tuaj yeem ua haujlwm ntawm qhov qis qis thiab muab cov kev xaiv tsis zoo raws li qhov loj thiab nqi.

Q: Dab tsi yog qhov siab ntawm nanofiltration membranes?

A: Lawv xav tau kev khiav hauj lwm siab ntawm 75-1200 psi (5-84 bar). Polyamide thim rov qab osmosis daim nyias nyias, tseem hu ua nyias zaj duab xis sib xyaw (TFC) daim nyias nyias, tuaj yeem tshem tawm cov ions monovalent nrog rau cov ions divalent, thaum nanofiltration membranes tsuas yog tshem tawm cov divalent ions.

Q: Dab tsi yog cov yam ntxwv ntawm nanofiltration membrane?

A: The NF membrane definition is based on some approximate characteristics: (1) pore diameters < 2 nm, (2) passage of sensible amount of monovalent ions (> 30%) across the membrane, (3) significant rejection of multivalent ions (>90%), (3) molecular weight cutoff (MWCO) rau hom nruab nrab yog nyob rau hauv 150-2000 Da

Q: Dab tsi yog qhov porosity ntawm nanofiltration membrane?

A: Nanofiltration membranes muaj qhov pore loj nyob rau hauv thaj tsam ntawm 0.001-0.01 µm. Lub denser lub pore loj qauv yog, cov khoom me me tuaj yeem khaws cia.

Raws li ib qho ntawm cov kws tshaj lij nanofiltration membrane 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 nanofiltration membranes los ntawm peb lub hoobkas.

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