Yuav ua li cas yog ib qho ultrafiltration dej?

Ib tug zoo txoj kev uas dej purification yog nws xuas nrig ntaus los ntawm lub semipermeable membrane. filtering dab yog txwv kom muab zais raws li particle loj qhia:

• los ntawm microfiltration week nrog pore ntau thiab tsawg pab ntawm los ntawm 0.05 mus rau 10 microns;
• Ultrafiltration - pores ntawm 0,001 microns rau 0.05 microns;
• rov qab osmosis thiab nanofiltration - pores ntawm 1 nm los yog hauv qab no.

Ultrafiltration yog npaj kom tshem tawm cov dej therefrom kab mob thiab macroscopic inclusions uas xeem tsis dhau los ntawm daim nyias nyias pores.

Tsoos txiav txim lim mechanism rau backfill raws li gravitational tu. Ultrafiltration yog ua piv kuaj los ntawm ib tug ntxeem tau mesh, nyob rau tag nrho cov hais ntawm ntau dua txoj kab uas hla raug sib cais.

hom week

Lub lim ntsiab yog ca los xij los yog fiber hlab ntsha. Los ntawm cov thawj ultrafiltration yog tsuas yog ua los ntawm wastewater, thiab rau tom kawg yog npaj rau dej kev kho mob.

Lub fibers mas ua ib leeg-channel, nrog ib tug puab inch ntawm txog 0.8 hli. Lawv yog raug heev load thiab tej zaum yuav cev qhuav dej thaum lub sij hawm backwashing. Multichannel fibers muaj ob peb cov hlab ntsha thiab muaj ib tug ntau dua lub zog.

Lub week no yog ua los ntawm polymers, e.g., los ntawm poliestersulfona. Nws tsis tau muab hloov los ntawm qhov sib ntxiv ntawm lwm hluavtaws cov ntaub ntawv. Ib tug dav pH ntau enables cov ua kua zoo ntxuav lub lim ntsiab.

Polymeric week yuav tsum tau tseg tsau tsis tau tshuaj vim hais tias cov kab mob nyiam noj organic teeb meem thiab tsim nws zos.

Yuav ua li cas ntev yog tej hub membrane, uas yog zoo ntxuav nrog detergents. Nws nqi ntau dua, tab sis cov kev pab cuam lub neej yog 10 xyoo.

pom txoj kev

dej ultrafiltration system muaj modules uas muaj qhov ntxeem tau hollow fibers. Initial kua nkag mus rau hauv cov hlab ntsha, tom qab uas pom tshwm sim los ntawm lub sab phab ntsa. Nws tseem yog tau nyob rau hauv lub rov qab pub kev taw qhia.

Flushing yog ua nrog cov filtrate kev noj rau ib tug txee txaus. Uniform muab faib rau cov kua sab nraum ntawm lub fibers muab rau kev tshem tawm ntawm deposits los ntawm cov hlab ntsha. Nws yog ib qho tseem ceeb los mus xaiv tus tseeb ntxuav tsoom fwv uas yog yooj yim los mus tshem tawm cov contaminating txheej.

Lim khiav lag luam nyob rau hauv ob hom, ib tug ntawm cov uas siab: dej yog noj mus rau hauv tus ntaus ntawv casing nyob rau hauv siab. Lub immersion txoj kev yog tau siv week, nqis mus rau hauv qhib thawv. Nyob rau hauv lub qhov zis sab ib lub tshuab nqus, thiab cov kua yog sucked los ntawm lub lim cov ntaub ntawv uas.

Lub modules cov txheej txheem mas. Cov dej yog noj los ntawm ib kawg, thiab muab tshem tawm - nyob rau lwm yam. Cov nab npawb ntawm cov modules nyob rau hauv ib tug lim yog feem ntau tsawg tshaj li ob units. Raws li ib tug tshwm sim, nws yuav siv sij hawm tsawg gasket uas txo qhov yuav ua rau txia. Vertical modules conveniently tswj thiab kev xeem. Lawv yog cov yooj yim rau nruab thiab tshem tawm.

filtering hom

Thaum dej ua ultrafiltration cov ntxaij lim dej yuav siv nyob rau hauv qhov tuag rov kawg hom thiab tangential. Nyob rau hauv thawj rooj plaub no nws yog ntxuav ntawm tag nrho cov dej nkag. Sediments los ntawm hais tias daim nyias nyias yog tsis tseg muab tshem tawm thaum lub sij hawm ntxuav los yog txhuav dej. Lub membrane yuav qias neeg sai sai, thiab nyob rau nws lub siab differential yuav tsum tau khaws cia me me, uas thiaj li muaj qhov kev ua tau zoo ntawm tus dais. Cov qauv no yog thov rau cov dej, nyob ib tug tsawg concentration ncua.

Nyob rau hauv tangential hom lim nruab nrab yog daim raws membrane nto thiab deposits thereon yog tsim ib tug me ntsis. Kiv uas txaus nyob rau hauv lub mov ciav tso cai rau purifying cov dej uas muaj ib tug siab concentration slurries. Qhov tsis zoo ntawm tus qauv yog qhov kev nce rau ntawm lub zog noj rau creation ntawm ib tug loj txaus tus nqi thiab qhov yuav tsum tau rau installation ntawm ntxiv pipelines.

ultrafiltration tsis

Ultrafiltration ntsiab tsis yog:

1. Selectivity - tus piv ntawm impurity ntau nyob rau hauv cov dej tsis huv _{(Rin C.)} Thiab cov filtrate (C _O.): R = _(.. 1 - C _O / C _Rin) ∙ 100%. Ultrafiltration txheej txheem nws yog zoo uas tso cai rau kom ncua lub me me hais, xws li kab mob thiab cov kab mob.
2. Flow ntawm filtrate - kom muaj nuj nqis ntawm kev dawb huv dej ib chav tsev lub sij hawm.
3. Cov kev filtrate txaus tus nqi - tus nqi ntawm cov khoom dua los ntawm 1 m ^{2 ntawm} daim nyias nyias cheeb tsam. Nws yog nyob ntawm tus yam ntxwv ntawm lub taub lim caij thiab lub purity ntawm lub qhov dej.
4. Lub siab nco thoob plaws lub membrane - qhov txawv ntawm lub siab rau lub mov sab thiab los ntawm cov filtrate.
5. Permeability - tus piv ntawm cov kev txaus tus nqi ntawm lub filtrate, thiab lub siab differential thoob plaws lub membrane.
6. Hydraulic efficiency - tus piv ntawm cov nqi thiab cov filtrate nkag qhov chaw dej.

Ultrafiltration rau dej kom huv

Tsoos txoj kev rau kev tshem tawm ntawm kab mob muaj xws li siv reagents technology. Ultrafiltration dej yog lub cev tu therefrom kab mob thiab colloids vim lub me me luaj li cas ntawm daim nyias nyias pores. Ib tug kom zoo dua ntawm txoj kev yog qhov kev tshem tawm ntawm tuag kab mob, algae, organic teeb meem thiab txhua yam hais. Yog li yuav tsis muaj kev cob qhia dej, uas nyob rau hauv lwm tus neeg mob yuav tsum tau. Nws yuav tsum tau tsuas tos nws dhau los ntawm ib tug 30-micron lim txhua yam tu.

Thaum yuav ib lub lim yog yuav tsum tau los mus txiav txim qhov luaj li cas ntawm daim nyias nyias pores. Yuav kom tag tshem tawm cov kab mob diameters ntawm lub keeb yuav tsum muaj 0,005 microns. Rau loj ntau thiab tsawg pab txij li thaum tua muaj nuj nqi yuav tsis tau ua.

Nyob rau hauv tas li ntawd, lub ultrafiltration technology muab dej meej. Tag nrho cov ntawv yog tshem tawm tag nrho.

Installation ultrafiltration dej muaj thaum uas tig mus kev cob cog rua pab kiag li lawm uas muab cov uas yuav tsum tau kev kawm ntawv ntawm cov txheej txheem thiab cov tseem hloov lawv nyob rau hauv tus txheej txheem.

Purification los ntawm ion pauv ntxaij lim dej dej ua ntej

Lub cob yog zoo nyob rau hauv ncua sijhawm hauv colloidal particle loj 0.1-1.0 microns, tab sis lawv sai sai txhaws granules. Muab yaug thiab lwm yog pab me ntsis. Tshwj xeeb tshaj yog nyuaj rau tshem tawm hais ntawm SiO _2, uas yog tshwj xeeb yog loj nyob rau hauv lub qhov dej thiab dej dej. Tom qab sib khi cob pib loj hlob mus rau hauv micro-kab nyob rau hauv qhov chaw uas tsis ntxuav nrog detergents.

Ion exchangers kuj nquag hammered emulsified roj, uas yuav tsis raug tshem tawm. Clogging yog li ntawd ntau npaum li cas uas yog yooj yim los mus hloov ib lub lim dua cais cov roj los ntawm nws.

Lim daig granules resins active high-molecular tebchaw. Lawv zoo tshem tawm cov tshuab txais carbon, tab sis nws muaj ib tug luv luv lub neej.

Ion pauv resins yog zoo nrog ultrafiltration tshem 95% ntawm colloids.

Dej kho mob - rov qab osmosis ua ntej ultrafiltration

Kev khiav hauj lwm cov nqi yog txo thaum ceev chaw cov ntxaij lim dej nrog consequent yuav txo tau ntawm qhov luaj li cas ntawm tus hais tuav. Yog hais tias ua ntej lub ultrafiltration module yog teem rougher kho mob, nws yuav tsub kom lub efficiency ntawm rov qab osmosis systems. Tsis ntev los no raug rau anionic thiab uas tsis yog-ionic flocculants yog coagulation kab mob ua nyob rau sij hawm luag tsis nyob ntev.

Krupnomolekulyarnyh organics sai sai clogs lub pores ntawm rov qab osmosis week. Lawv sai sai ua overgrown nrog microorganisms. Pre-ultrafiltration dej daws tag nrho cov teeb meem thiab nyiaj txiag feasibility ntawm kev siv rov qab osmosis.

Kev kho mob ntawm pov tseg

Dej Khib Nyiab kev kho mob los ntawm ultrafiltration ua rau nws tau mus re-siv lawv nyob rau hauv kev ua lag luam. Rau siv nyob rau hauv lub kos duab yog haum, thiab tus txiv neej-ua load rau qhib dej potable txo.

Membrane technology yog siv rau effluent kev kho mob thiab electroplating ntawm textile ntau lawm, nyob rau hauv khoom noj khoom haus kev lag luam, hlau tshem tawm system, thaum tshem los ntawm urea kev daws teeb meem, electrolytes, hnyav hlau tebchaw, roj khoom thiab lwm tus. Qhov no yuav tsub efficiency thiab simplifies purification technology.

Thaum uas tsis muaj molecular yuag impurities los ntawm ultrafiltration concentrates tej zaum yuav npaj cov khoom xyaw.

Tshwj xeeb tshaj yog ib qho tseem ceeb yog qhov teeb meem ntawm sib cais ntawm cov dej emulsified roj. Qhov kom zoo dua ntawm daim nyias nyias technology yog ib tug yooj yim txoj kev, uas tsis muaj cov nqi zog thiab cov tsis tuaj kawm ntawv ntawm cov tshuaj xav tau kev pab.

Kev kho mob ntawm cov dej los ntawm qhov chaw qhov chaw

Nag lossis daus thiab pom tau yav tas los zoo dej purification txoj kev. Impurities ntawm tej yam ntuj tso keeb kwm yog zoo muab tshem tawm, tab sis tam sim no muaj txiv neej-ua kab mob, rau tshem tawm uas yuav tsum tau lwm txoj kev purification. Tshwj xeeb tshaj yog muaj ntau yam teeb meem ua ib qho kev pib chlorination txoj kev organochlorines. Kev siv cov ntxiv theem ntawm purification nrog tshuab txais carbon thiab ozonation kom cov dej nqi.

Ultrafiltration ua haus dej ncaj qha los ntawm qhov chaw qhov chaw raug muab tshem tawm hauv therefrom algae, kab mob, particulate teeb meem thiab lwm yam sib txuas .. Cov qauv no yog zoo nrog pre-coagulation. Nws tsis yuav tsum tau ib tug ntev lub sij hawm ntawm sedimentation, vim hais tias tsis tas cov tsim ntawm loj ya ri tau.

Installation ultrafiltration dej (pictured hauv qab no) achieves li qhia siv kuj zoo zoo ntawm kho dej uas tsis muaj kev siv ntawm complex cov khoom thiab reagents.

Daim ntawv thov coagulation txoj kev yuav inefficient vim hais tias muaj ntau yam organic tebchaw nyob rau hauv cov dej yog tsis kuaj los ntawm cov pa poov tshuaj permanganate oxidation. Tsis tas li ntawd, cov ntsiab lus ntawm cov organic teeb meem mas nws txawv lug, vim uas yog nrhiav tsis tau tsim nyog reagents concentration.

xaus

Lub ultrafiltration membrane tso cai dej los ntawm nws mus cuag tus yuav tsum tau kev coj dawb huv nrog ib tug tsawg kawg nkaus ntawm reactants. Khib nyiab dej tej zaum yuav siv tom qab kev kho mob kom muaj cov hom phiaj.

Ultrafiltration yog tsis ib txwm zoo. Cov kev tsis pub kom tshem tawm tej yam tshuaj, piv txwv li, organochlorine tebchaw thiab ib co ntawm cov humic acid. Nyob rau hauv xws li mob, ib tug multi-theem tu.