Nrog rau pej xeem cov kev cia siab tsis tu ncua rau kev haus dej zoo, ultrarafiltration membrane kev kho mob rau nws txoj kev sib cais zoo heev. Ib qho kev ua tau zoo thiab ruaj khov ultrarofiltration haus dej systemtuaj yeem tshem tawm cov khib nyiab tshem tawm, cov kab colloids, cov kab mob, thiab lwm cov dej huv, xa cov dej haus huv thiab muaj kev nyab xeeb rau cov tsev neeg tsis muaj ntau yam. Txawm li cas los xij, tsuas yog ib qho khoom siv ntsuas ua ntej hnav thiab kua muag, teeb meem ultrafiltration kuj tseem ntsib ib qho teeb meem thiab nyuaj}} Membrane fouling. Qhov no tsis tsuas yog cuam tshuam cov dej ua haujlwm ntau tab sis kuj cuam tshuam rau cov nqi ua haujlwm thiab cov kev pabcuam lub neej ntawm daim nyias nyias.
I. Unveiling membrane paug: Cov laj thawj thiab kev faib tawm ntawm fouling
Hauv cov lus yooj yooj yim, membrane fouling tshwm sim thaum ntau cov tshuaj me me hauv cov dej "nyob rau ntawm nws qhov pores, maj mam muab cov dej tso tseg. Cov txheej txheem no tsis yog tshwm sim los ntawm ib qho tshwj xeeb tab sis yog qhov txiaj ntsig ntawm synergistic cuam tshuam ntawm ntau cov khoom hauv dej.QhovCeramic Membrane Filtration SystemTau siv dav hauv kev kho dej, kev lag luam khoom noj khoom haus, thiab kev kho kom zoo nkauj vim nws txoj kev sib cais zoo heev thiab tshuaj lom neeg tiv taus.
1. Fouling tshwm sim li cas?
Impurities nyob rau hauv cov dej, xws li colloidal hais, loj organic molecules (zoo li Humic acid), thiab inorganic ntsev, ntws mus rau daim nyias nyias. Qee qhov loj dua tau tsis lees txais, tsim "khoom qab zib me ntsis Tsib lub Tsib Hlis Lwm cov khoom me me, ua rau lub ntsej muag membrane, ua rau muaj kev thaiv pore. Sij hawm dhau los no, cov txheej txheej no yuav loj hlob thickinants yuav loj hlob thicker, ua rau kom nce ntxiv rau dej membrane, uas ib txwm ua rau muaj kev poob dej.
2. Reversible vs. ireversible fouling
Raws li kev ua siab tawv ntawm fouling, peb ib txwm cais nws ua ob hom:
Thim rov qab fouling:Hom no feem ntau tshwm sim los ntawm cov xoob ntxiv ntawm cov lus ntawm daim nyias nyias, muaj ntau xws li plua plav nyob ntawm ib qho kev sib tsoo. Nws tuaj yeem raug tshem tawm nrog kev cuam tshuam nrog kev yooj yim los ntawm kev ua kom huv lub cev, xws li backwashing, kom rov ua haujlwm membrane.
Irreversible fouling:Cov yeeb yaj kiab no yog qhov ua tau zoo heev rau qhov chaw ua si ib qho, xws li qee cov organic tshuaj kom nruj heev los ntawm hydrophobic kev sib cuam tshuam uas muaj cov ntsev frystallized thiab muab tso rau. Lawv yog cov kua nplaum rau stains uas tau soaked rau hauv ntoo; Kev ntxuav lub cev yooj yim yog qhov tsis txaus los tshem tawm lawv, tsim nyog tu tshuaj. Muaj qee kis, kev puas tsuaj yuav txawm nyob ruaj khov. Nov yog qhov kev sib tw tseem ceeb uas yuav tsum tau hais txog UF system dej kho mob.
Ii. Ntau {- pronged mus ze: qhia meej meej rau kev tswj hwm fouling
Thaum muab cov teeb meem nyuaj ntawm fouling, ib qho kev daws teeb meem feem ntau tsis muaj txiaj ntsig. Peb yuav tsum tsim kom muaj ntau - Faceted Kws muaj txuj ci thiab rov qab cov teeb meem los ntawm kev pom ntawm cov pontactives, cov ntaub ntawv tseem ceeb, thiab kev ua haujlwm.
1. Qhov chaw tswj hwm: Ua kom zoo ua Pretrecent txheej txheem
Lub tswv yim zoo tshaj plaws yog mus rau "bar lub qhov rooj" rau cov paug tsis huv ua ntej lawv tuaj yeem ncav cuag daim nyias nyias. Los ntawm kev ntxiv lossis txhim kho pretreat cov chav nyob urmartration tshuab tshuaj, lub nra nyob tom ntej ultrestration membranes tuaj yeem ua kom pom tseeb. Piv txwv li, ntxiv cov coagulants ua rau cov dej me me hauv cov dej kom suav nrog cov loj dua, ua kom yooj yim rau kev khom lossis raug cuam tshuam. Hloov chaw, ua haujlwm tau tshaj lij oxidational technologies tuaj yeem tsoo cov teeb meem organic hauv dej, txo nws cov txiaj ntsig ntawm adsorbing mus rau daim nyias nyias.
2. Tub ntxhais breakoughroughs: Cov ntaub ntawv tshaj lij thiab kev hloov kho saum npoo
Daim nyias nyias nws tus kheej yog qhov tseem ceeb los ua kom tau raws li kev sib tw ntawm Fouling. Peb tseem mob siab rau kev tshawb fawb, kev loj hlob, thiab kev siv ntawm cov ntaub ntawv tseem ceeb tshaj plaws. Piv rau cov kev ua yeeb yaj kiab ib txwm muaj, qee cov ntaub ntawv tshiab ua rau pom cov tshuaj zoo dua, thermal stability, thiab tshuab muaj zog. Qhov no txhais tau tias lawv tuaj yeem tiv taus ntau dua kev tu, tso cai rau kev ua kom zoo dua ntawm kev ua tau zoo.
Nyob rau tib lub sijhawm, cov txheej txheem kev hloov kho tshiab tuaj yeem muab cov ntawv tso nrog "anti {{m}} fouling tsho tiv no." Piv txwv li, txhim kho lub hydrophilicity ntawm daim dirichilicity ntawm daim di ncauj siv cov txiaj ntsig kev sib cais los ua kom nws tsis yooj yim rau kev mus kom ze thiab ua raws li. Lwm txoj hauv kev yog txhawm rau kho cov membrane lub luag haujlwm mus rau cov neeg muaj kuab paug nyob hauv cov dej ntawm cov tshuab hluav taws xob. Cov kev txiav {{4 4}} ntug Dej ultrafiltration technologiesly txo qhov tshwm sim ntawm fouling tshwm sim. Raws li lub tuam txhab uas muab cov kev daws teeb meem tseem ceeb - los ntawm core cov ntsiab lus ua tiav cov ntsiab lus ua tiav cov ntsiab lus ua rau peb cov khoom tsim qauv thiab kev ua engineering.
3. Ntsej Muag O & M: Kev Tu Tshuaj Kev Tshawb Fawb thiab Rov Qab Cov Tswv Yim
Tshaj li "kev tiv thaiv," kev tshawb fawb "yog qhov tseem ceeb. Lub ntsej muag paub ultrafiltration haus dej system yog qhov tsis zoo tau nruab nrog kev ua haujlwm ntse thiab kev tswj hwm tswj hwm.
Kev Tu Lub Cev Li Cas:Tsim cov suab nrov tau zoo thiab muaj kuab siv hluav taws xob ntxiv tau hauv paus yog qhov tseem ceeb kom tshem tawm cov haujlwm thim rov qab thiab ua haujlwm ruaj khov.
On -}}} Thov tshuaj tu:Los ntawm cov kev saib xyuas cov khoom tseem ceeb xws li Transmemranrane siab nyob rau hauv lub sijhawm tiag tiag, kev fouling xwm txheej ntawm daim nyias nyias tuaj yeem raug ntsuas kom raug. Thaum kev ntxuav lub cev yog tsis tau zoo lawm, lub kaw lus yuav pib ua ntej lossis ua kom tus neeg saib xyuas tu tshuaj, siv cov tshuaj ntxuav kom huv si kom tau tshem tawm cov tawv ncauj.
III. Tag
Hauv cov ntsiab lus, membrane fouling yog lub hom phiaj sib tw hauv daim ntawv thov ultraFiltration thev naus laus zis, tab sis nws yog los ntawm tsis muaj txoj kev tsis muaj peev xwm. Los ntawm kev ua kom zoo ua ntej, tau txais kev ua haujlwm siab {1} Kev ua kom zoo, kev ua haujlwm zoo thiab kev txij nkawm, peb muaj peev xwm tag nrho cov kev cuam tshuam. Qhov no tsis yog tsuas yog kuaj ntawm thev naus laus zis tab sis kuj yog kev xav ntawm kev txawj ntse thiab lub luag haujlwm ntawm cov dej tshuaj kho mob. Peb txuas ntxiv thev naus laus zis thev naus laus zis thiab cov ntawv thov tswv yim zoo yog tsom mus rau kom ntseeg tau tias txhua qhovUltrafiltration Haus Dej System tuaj yeem ua haujlwm rau lub sijhawm ntev nyob rau hauv ib qho ruaj khov thiab muaj txiaj ntsig zoo, yog pab txhawb peb lub zog tseem ceeb rau kev nyab xeeb rau pej xeem haus dej nyab.