Flat Sheet Membrane Phaj

Lub silicon carbide tiaj daim ntawv membrane modules peb tsim thiab tsim yog modular, expandable filtration units muaj xws li ib tug iav fiber reinforced yas plhaub thiab Flat Sheet Membrane daim hlau.

Lub membrane module integrates cov dej ntau lawm raws nyob rau hauv thiab tuaj yeem tiv taus siab. Peb cov membrane modules tau dhau los ua CFD kua tshuab simulations thiab kev sim tiag tiag kom ua tiav qhov kev ua tau zoo tshaj plaws ntawm cov ntawv tiaj tus ceramics. Txhua tus qauv membrane module muaj 2 cov dej ntau lawm, nrog rau cov dej ntau tshaj plaws ntawm 1200LMH (9m³/h). Tsis muaj lub plhaub thiab cov khoom siv muaj kev puas siab puas ntsws, yog li nws tuaj yeem siv rau hauv cov ntawv thov hnyav tshaj plaws thaum txuas nws lub neej kev pabcuam. Tsis tas li ntawd, tsis tas yuav tsum muaj ib puag ncig thav duab lossis hose txuas ntawm cov membrane modules.

Flat Sheet Membrane Phaj yog tsim los ntawm sintering high-purity silicon carbide hmoov ntawm qhov kub thiab txias, thiab tam sim no yog cov khoom siv membrane nrog qhov zoo tshaj plaws hydrophilicity thiab muaj peev xwm tiv thaiv kev ua qias tuaj.

● Lub membrane nto nrog cov nqi tsis zoo tuaj yeem ua kom muaj kuab paug zoo nyob hauv ntau qhov pH;

● Cov kev ua haujlwm zoo tshaj plaws - thaum PAC ntxiv ua rau pH tsawg dua 6, daim nyias nyias muaj peev xwm tswj tau tus nqi tsis zoo ntawm -25~-30 millivolts, ua rau nws nyuaj rau soluble organic carbon thiab pob tshab exopolymer hais rau ua raws li daim nyias nyias;

● Nws yog ib qho yooj yim kom tshem tawm cov khoom tsis zoo hauv cov dej los ntawm daim nyias nyias, xws li cov kab mob, algae, MLSS, pob tshab exopolymer hais, thiab cov khoom siv roj.

★ Cov khoom siv tseem ceeb silicon carbide muaj hydrophilicity zoo, porosity ntau dua, muaj peev xwm ua kom rov zoo zoo, thiab tsis ntshai roj paug;

★ High-throughput lag luam yuav tsum muaj tsawg pom cheeb tsam thiab txuag cov nqi tseem ceeb;

★ Nws muaj kev ua haujlwm zoo los tiv thaiv kev ua qias tuaj, tiv taus cov dej nkag hloov pauv, thiab muaj kev ua haujlwm ruaj khov mus ntev;

★ Nws muaj tshuaj lom neeg ruaj khov, kua qaub thiab alkali tsis kam, muaj zog oxidant tsis kam, kub tsis kam, organic dissolution kuj, zoo washability thiab yooj yim rov qab flux tom qab ntxuav;

★ Haum rau dej hiav txwv thiab lwm yam kev siv nyuaj yam tsis muaj kev pheej hmoo corrosion;

★ Tag Nrho modularity tso cai rau tus naj npawb ntawm cov membrane modules ib daim nyias nyias yuav hloov tau txhua lub sijhawm los txhim kho cov nqi tsim khoom lossis nce kev ua haujlwm yav tom ntej;

★ Cov qauv tsim compact tshaj plaws - tsis tas yuav teeb tsa cov kav dej ywj pheej, cov txheej txheem membrane yog kev sib koom ua ke;

★ Cov nqi sib tw peev thiab lub neej zoo heev.

• Membrane bioreactor
• Pretreatment ntawm seawater desalination
• High standard purification ntawm cov dej haus
• Cov kua dej sib cais ntawm inorganic hais
• Sludge concentration

MBR membrane bioreactor txoj kev kho hauv nroog thiab cov dej khib nyiab hauv nroog tau siv dav hauv kev kho cov dej phwj tuaj thiab kev siv khoom siv hluav taws xob vim nws cov kev ua haujlwm siab, txuag hluav taws xob, tsis muaj theem hloov, tsis muaj kuab paug thib ob, dej zoo, hneev taw me me, thiab qib siab. ntawm automation. Nws tau qhia dav dav kev cia siab.

MBR yog lub npe luv rau Membrane Bio Reactor, uas yog hais txog kev kho dej phwj tuaj tshiab uas ua ke nrog kev siv ultrafiltration thiab microfiltration membrane sib cais tshuab nrog bioreactors hauv kev kho dej phwj tuaj. Qhov no reactor sib xyaw ua ke qhov zoo ntawm cov txheej txheem kho membrane thiab kev kho mob lom. Raws li sludge dej sib cais chav tsev, ultrafiltration membrane Cheebtsam tuaj yeem hloov pauv cov tso tsheb hlau luam thib ob. Hloov cov tshuaj lom neeg kev kho mob nrog cov membrane modules nyob rau hauv lub davhlau ya nyob twg theem nrab sedimentation tank, tswj lub siab concentration ntawm activated sludge nyob rau hauv lub bioreactor, ua rau cov organic load ntawm lom kev kho mob, yog li txo cov hneev taw ntawm cov dej phwj tuaj kho cov chaw, thiab txo tus nqi ntawm cov sludge seem. los ntawm kev tuav ib tug tsawg sludge load. Feem ntau yog siv cov khoom sib cais membrane los cuam tshuam cov activated sludge thiab loj molecular organic teeb meem hauv dej. Qhov concentration ntawm activated sludge (MLSS) nyob rau hauv daim nyias nyias bioreactor system tuaj yeem nce mus rau 8000-10000 mg / L, lossis ntau dua; Lub hnub nyoog sludge (SRT) tuaj yeem txuas ntxiv mus rau 30 hnub.

Membrane bioreactor, vim nws cov txiaj ntsig cuam tshuam zoo, tuaj yeem khaws cov kab mob nrog lub sijhawm ntev dua, ua tiav cov dej phwj sib sib zog nqus. Nyob rau tib lub sijhawm, cov kab mob nitrifying tuaj yeem tsim tawm tag nrho hauv lub cev, thiab nws cov txiaj ntsig nitrification tseem ceeb, muab kev muaj peev xwm rau kev tshem tawm cov phosphorus thiab nitrogen sib sib zog nqus.

• Hom ntawm MBR membranes

1. Khoom-kua sib cais membrane

Cov kua dej sib cais membrane bioreactor yog qhov dav tshaj plaws thiab tob kawm hom membrane bioreactor hauv kev kho dej. Nws yog cov cuab yeej siv dej kho dej uas siv cov txheej txheem sib cais los ntawm cov txheej txheem sib cais los hloov cov txheej txheem sedimentation thib ob hauv cov txheej txheem activated sludge.

Nws refluxes cov organic teeb meem rau hauv lub reactor los ntawm membrane modules thiab ces tso tawm cov organic dej kho. Cov hom membrane cais bioreactors tuaj yeem raug cais raws li txoj haujlwm ntawm cov khoom siv membrane thiab bioreactors, suav nrog kev sib xyaw membrane bioreactors, cais membrane bioreactors, thiab cov khoom sib xyaw membrane bioreactors.

Nyob rau hauv ib txwm siv dej khib nyiab kho tshuab, kev sib cais ntawm sludge thiab dej nyob rau hauv lub thib ob sedimentation tank yog ua tiav los ntawm lub ntiajteb txawj nqus, thiab nws kev sib cais efficiency nyob ntawm seb qhov kev ua tau zoo ntawm activated sludge. Qhov kev daws teeb meem zoo dua, qhov siab dua cov sludge thiab dej sib cais efficiency.

Kev daws cov cuab yeej ntawm sludge nyob ntawm kev ua haujlwm ntawm lub tshuab aeration, thiab kev txhim kho cov khoom siv ntawm cov sludge yuav tsum tau tswj nruj ntawm kev ua haujlwm ntawm lub tshuab aeration, uas txwv qhov kev siv ntawm txoj kev no.

Vim yog qhov yuav tsum tau muaj kev sib cais ntawm cov kua dej hauv lub tank thib ob, cov sludge hauv lub tank aeration tsis tuaj yeem tswj tau qhov siab, feem ntau nyob ib ncig ntawm 1.5-3.5g / L, uas txwv cov tshuaj tiv thaiv biochemical.

Lub sijhawm hydraulic tuav (HRT) thiab sludge hnub nyoog (SRT) yog qhov sib cuam tshuam, thiab nce ntim ntim thiab txo cov sludge load feem ntau tsim qhov tsis sib xws. Lub kaw lus kuj tseem tsim kom muaj ntau cov sludge seem thaum lub sijhawm ua haujlwm, thiab nws cov nqi pov tseg yog 25% txog 40% ntawm cov nqi khiav haujlwm ntawm cov dej phwj tuaj kho.

Hais txog cov teeb meem saum toj no:

MBR muab cov txheej txheem sib cais membrane hauv kev sib cais engineering nrog cov txheej txheem kev kho cov dej khib nyiab lom neeg, txhim kho kev ua tau zoo ntawm cov kua-kua sib cais;

Thiab vim qhov nce hauv qhov concentration ntawm activated sludge nyob rau hauv lub aeration tank thiab tshwm sim ntawm cov kab mob tshwj xeeb (tshwj xeeb tshaj yog cov kab mob tseem ceeb) nyob rau hauv cov sludge, cov tshuaj biochemical cov tshuaj tiv thaiv tau zoo dua;

Nyob rau tib lub sijhawm, los ntawm kev txo qis F / M piv los txo qhov ntau tshaj sludge generated (txawm mus rau xoom), ntau yam teeb meem tseem ceeb uas muaj nyob rau hauv cov txheej txheem activated sludge ib txwm tau daws.

2. Aeration membrane

Aeration membrane bioreactor (AMBR) siv cov pa ua pa (xws li silicone roj hmab daim nyias nyias) los yog microporous daim nyias nyias (xws li hydrophobic polymer membranes), nrog phaj lossis hollow fiber ntau, kom ua tiav npuas tsis muaj aeration rau hauv bioreactor thaum tswj cov roj ib nrab siab hauv qab no. npuas point.

Cov yam ntxwv ntawm cov txheej txheem no yog txhawm rau txhim kho lub sijhawm sib cuag thiab kev hloov pauv cov pa oxygen, uas yog qhov tsim nyog rau kev tswj hwm ntawm cov txheej txheem aeration thiab tsis cuam tshuam los ntawm cov xwm txheej ntawm npuas loj thiab lub sijhawm nyob hauv ib txwm aeration.

3. Extraction membrane

Extraction membrane bioreactor, tseem hu ua EMBR (Extractive Membrane Bioreactor).

Vim muaj acidity siab los yog muaj cov tshuaj lom rau cov kab mob, qee cov dej khib nyiab yuav tsum tsis txhob raug kho los ntawm kev sib cuag nrog cov kab mob;

Thaum muaj cov tshuaj lom tsis haum xeeb nyob hauv cov dej khib nyiab, yog siv cov txheej txheem aerobic lom neeg siv, cov pa phem yuav ua rau evaporate nrog cov pa aeration, uas ua rau cov roj tawm. Qhov no tsis yog tsuas yog ua rau kev kho tsis ruaj khov tab sis kuj ua rau huab cua muaj kuab paug.

Txhawm rau daws cov teeb meem no, tus kws tshawb fawb Askiv Askiv Livingston tau tshawb fawb thiab tsim EMB. Cov dej khib nyiab thiab cov activated sludge yog sib cais los ntawm ib daim nyias nyias, thiab cov dej khib nyiab ntws mus rau hauv daim nyias nyias, thaum cov activated sludge muaj qee cov kab mob tshwj xeeb ntws tawm sab nraud ntawm daim nyias nyias. Cov dej khib nyiab tsis cuam tshuam ncaj qha rau cov kab mob, thiab cov pa phem tuaj yeem raug xaiv degraded los ntawm cov kab mob ntawm sab nraud los ntawm daim nyias nyias.

Vim tias muaj kev ywj pheej ntawm cov chav bioreactor thiab cov dej khib nyiab ntawm ob sab ntawm cov khoom siv tshem tawm, cov dej ntws ntawm txhua chav tsev muaj kev cuam tshuam me ntsis rau ib leeg. Cov khoom noj khoom haus thiab cov kab mob microbial nyob hauv bioreactor tsis cuam tshuam los ntawm qhov zoo ntawm cov dej khib nyiab, uas ua rau cov dej khov kho tau zoo.

• Kev sib xyaw ua ke ntawm MBR membrane

Raws li kev sib xyaw ua ke ntawm cov khoom siv membrane thiab bioreactors, membrane bioreactors tuaj yeem muab faib ua peb hom: sib cais, sib xyaw, thiab sib xyaw. (Cov kev sib tham hauv qab no yog txhua yam hais txog cov kua dej sib cais bioreactors)

1. Sib cais hom

Cais lub membrane module los ntawm bioreactor.

Cov kua sib xyaw hauv bioreactor yog pressurized los ntawm lub twj tso kua mis thiab xa mus rau qhov pom kawg ntawm daim nyias nyias module. Nyob rau hauv lub siab, cov kua hauv cov kua sib tov dhau los ntawm daim nyias nyias thiab dhau los ua cov txheej txheem kho dej; Cov khoom muaj zog, cov khoom loj molecular, thiab lwm yam yog daig los ntawm daim nyias nyias thiab reflux rov qab mus rau hauv bioreactor nrog cov tshuaj concentrated.

2. Integrated hom

Muab cov membrane module tso rau hauv lub bioreactor. Cov dej nkag nkag mus rau hauv daim nyias nyias bioreactor, qhov twg feem ntau ntawm cov pa phem raug tshem tawm los ntawm cov activated sludge nyob rau hauv cov tshuaj tov, thiab ces lim tawm los ntawm daim nyias nyias nyob rau hauv sab nraud siab.

Daim ntawv no ntawm daim nyias nyias bioreactor tshem tawm qhov xav tau ntawm cov kua sib xyaw ua ke thiab tso siab rau kev nqus dej, ua rau muaj kev siv zog tsawg; Nws nyob ntau qhov chaw thiab yog qhov sib txuam ntau dua li ib hom cais, thiab tau txais kev saib xyuas tshwj xeeb hauv kev kho dej hauv xyoo tas los no.

Txawm li cas los xij, lub membrane flux feem ntau kuj qis, ua rau nws yooj yim rau daim nyias nyias fouling thiab nyuaj los ntxuav thiab hloov tom qab fouling.

3. Composite hom

Raws li txoj cai, nws kuj belongs rau ib qho kev sib xyaw membrane bioreactor, nrog rau qhov sib txawv yog qhov sib ntxiv ntawm cov fillers hauv bioreactor los ua ib qho kev sib xyaw membrane bioreactor, uas hloov qee yam ntxwv ntawm lub reactor.

4. Kev sib xyaw ua ke

Txhawm rau kom ua tiav cov txiaj ntsig zoo ntawm cov dej khib nyiab, cov txheej txheem biochemical thiab MBR txheej txheem feem ntau ua ke rau hauv cov txheej txheem tshiab.

Piv nrog rau ntau cov txheej txheem kev kho dej lom neeg lom neeg, MBR muaj qhov zoo hauv qab no:

1. High quality thiab ruaj khov effluent dej zoo

Vim muaj kev sib cais zoo ntawm daim nyias nyias, qhov kev sib cais ua haujlwm zoo dua li cov tsoos sedimentation tso tsheb hlau luam. Cov effluent kho yog qhov tseeb heev, nrog cov khib nyiab pov tseg thiab turbidity zero. Cov kab mob thiab cov kab mob raug tshem tawm zoo heev, thiab cov dej ntws zoo zoo dua li cov qauv dej hauv tsev zoo tshaj tawm los ntawm Ministry of Construction (CJ25.189). Nws tuaj yeem rov qab siv ncaj qha raws li cov dej tsis muaj peev txheej hauv nroog.

Nyob rau tib lub sijhawm, kev sib cais ntawm daim nyias nyias kuj tseem cuam tshuam cov kab mob hauv bioreactor, uas tso cai rau lub cev kom muaj cov kab mob siab. Qhov no tsis tsuas yog txhim kho qhov kev tshem tawm tag nrho ntawm cov pa phem los ntawm cov khoom siv tshuaj tiv thaiv, tab sis kuj ua kom cov dej ntws zoo. Nyob rau tib lub sijhawm, lub reactor muaj qhov hloov tau zoo rau ntau yam kev hloov pauv hauv inlet load (dej zoo thiab kom muaj nuj nqis), tiv taus kev poob siab, thiab tuaj yeem ruaj khov kom tau txais txiaj ntsig zoo.

2. Tsawg ntau lawm ntawm cov khoom seem sludge

Cov txheej txheem no tuaj yeem ua haujlwm nyob rau hauv qhov ntim siab thiab qis sludge load, nrog cov khoom seem sludge tsawg (theoretically ua tiav xoom sludge paug), txo cov nqi kho sludge.

3. Me me hneev taw, tsis txwv los ntawm qhov chaw teeb tsa

Lub bioreactor tuaj yeem tswj tau qhov siab ntawm microbial biomass, nrog lub siab ntim ntim ntawm cov cuab yeej kho mob thiab cov hneev taw loj, ua rau muaj txiaj ntsig zoo rau kev txuag nyiaj; Cov txheej txheem no yooj yim, compact hauv cov qauv, thiab occupies ib cheeb tsam me me. Nws tsis txwv los ntawm qhov chaw teeb tsa thiab tsim nyog rau txhua lub sijhawm. Nws tuaj yeem ua rau hauv av, semi underground, thiab underground hom.

4. tuaj yeem tshem tawm ammonia nitrogen thiab nyuaj rau degrade organic teeb meem

Vim muaj kev cuam tshuam tag nrho ntawm cov kab mob hauv bioreactor, nws pab txhawb kev khaws cia thiab kev loj hlob ntawm cov kab mob qeeb qeeb xws li cov kab mob nitrifying, yog li txhim kho cov txiaj ntsig nitrification ntawm lub cev. Nyob rau tib lub sijhawm, nws tuaj yeem ua rau lub sijhawm khaws cia hydraulic ntawm qee cov organic sib txuas hauv lub cev, uas yog qhov zoo rau kev txhim kho cov kev ua haujlwm degradation ntawm recalcitrant organic compounds.

5. Kev ua haujlwm yooj yim thiab kev tswj hwm, yooj yim rau kev tswj tsis siv neeg

Cov txheej txheem no ua tiav kev sib cais ntawm hydraulic tuav lub sij hawm (HRT) thiab sludge retention time (SRT), ua kom tswj kev lag luam hloov tau yooj yim thiab ruaj khov. Nws yog cov cuab yeej tshiab uas yooj yim rau kev siv hauv kev kho dej khib nyiab thiab tuaj yeem ua tiav microcomputer tsis siv neeg tswj, ua rau kev tswj xyuas kev ua haujlwm yooj yim dua.

6. Ib qho yooj yim los hloov los ntawm cov khoom siv tes ua ib txwm muaj

Cov txheej txheem no tuaj yeem ua haujlwm sib sib zog nqus rau cov txheej txheem kev kho dej phwj tuaj, thiab muaj cov ntawv thov dav dav hauv thaj chaw xws li kev kho cov dej ntws sib sib zog nqus los ntawm cov chaw kho dej hauv nroog theem nrab (yog li ua tiav kev siv cov dej phwj loj hauv nroog).

Membrane bioreactors kuj muaj qee qhov tsis txaus. Feem ntau manifested nyob rau hauv cov nram qab no yam:

(1) Tus nqi membrane siab: Qhov no ua rau muaj kev nqis peev ntau dua rau cov khoom siv bioreactors piv rau cov txheej txheem kho dej khib nyiab.

(2) Membrane ua rau muaj kev sib kis: ua rau tsis yooj yim rau kev ua haujlwm thiab kev tswj xyuas.

(3) Kev siv hluav taws xob ntau

Ua ntej, MBR sludge dej sib cais txheej txheem yuav tsum tswj kom muaj qee yam kev tsav tsheb siab; Qhov thib ob, MLSS concentration nyob rau hauv MBR tank yog siab heev, thiab thiaj li yuav tswj tau cov pa oxygen txaus txaus, nws yog ib qho tsim nyog yuav tsum tau ua kom muaj zog aeration; Txhawm rau kom ua kom tiav cov membrane flux thiab txo cov membrane fouling, nws yog qhov tsim nyog yuav tsum nce ntxiv kev siv cov tshuaj tua kab mob ntawm MBR piv rau cov txheej txheem kev kho mob sib txawv.

Membrane tuaj yeem npaj tau los ntawm ntau yam ntaub ntawv, suav nrog theem ua kua, theem khoom, thiab txawm tias theem roj. Feem ntau ntawm kev sib cais membranes tam sim no siv yog cov khoom-theem membranes. Raws li qhov sib txawv qhov pore, nws tuaj yeem muab faib ua microfiltration membranes, ultrafiltration membranes, nanofiltration membranes, thiab thim rov qab osmosis membranes; Raws li cov ntaub ntawv sib txawv, nws tuaj yeem muab faib ua inorganic membranes thiab organic membranes. Inorganic membranes feem ntau yog microfiltration qib membranes. Lub membrane tuaj yeem ua homogeneous lossis heterogeneous, thiab tuaj yeem raug them lossis hluav taws xob nruab nrab. Cov membranes dav siv hauv kev kho dej khib nyiab yog cov khoom siv hauv xeev asymmetric feem ntau npaj los ntawm cov ntaub ntawv organic polymer.

1. Cov txheej txheem kev faib tawm thiab kev faib tawm ntawm daim nyias nyias

1) Membrane khoom

① Polymer organic zaj duab xis cov ntaub ntawv: polyolefin, polyethylene, polyacrylonitrile, polysulfone, aromatic polyamide, fluoropolymer, thiab lwm yam.

Organic daim nyias nyias muaj tus nqi qis, pheej yig, muaj cov txheej txheem tsim khoom, muaj ntau qhov pore loj thiab cov ntaub ntawv, thiab tau siv dav. Txawm li cas los xij, lawv muaj kev ua qias tuaj thaum ua haujlwm, muaj zog tsawg, thiab muaj lub neej ua haujlwm luv.

② Inorganic membrane: Nws yog ib hom ntawm cov khoom siv hauv lub xeev membrane uas yog ib qho permeable membrane ua los ntawm cov ntaub ntawv inorganic xws li hlau, hlau oxides, ceramics, ntxeem tau iav, zeolites, inorganic polymer cov ntaub ntawv, thiab lwm yam. Cov inorganic membranes tam sim no siv nyob rau hauv MBR. Feem ntau yog cov ceramics.

2) Membrane pore loj

Cov membranes feem ntau siv hauv cov txheej txheem MBR yog microfiltration (MF) thiab ultrafiltration (UF) daim nyias nyias, feem ntau muaj qhov pore loj ntawm 0.1-0.4 μ m, uas yog txaus rau cov khoom sib cais hom membrane reactors. Cov khoom siv polymer feem ntau siv rau microfiltration daim nyias nyias muaj xws li polycarbonate, cellulose ester, polyvinylidene fluoride, polysulfone, polytetrafluoroethylene, polyvinyl chloride, polyetherimide, polypropylene, polyetheretherketone, polyamide, thiab lwm yam.

Ultrafiltration feem ntau siv polymeric polyethersulfone (PES), polyamide, polyacrylonitrile (PAN), polyvinylidene fluoride, cellulose ester, polyimide, polyetheramide, thiab lwm yam.

In order to facilitate industrial production and installation, improve membrane efficiency, and achieve maximum membrane area per unit volume, membrane modules are usually assembled in a basic unit equipment in some form, and under a certain driving force, complete the separation of various components in the mixed liquid. This type of device is called a membrane module. There are five commonly used forms of membrane modules in industry: plate frame type, spiral coil type, circular tube type, hollow fiber type, and capillary tube type. The first two use flat film, while the latter three use tubular film. Circular tube membrane diameter>10 hli; Capillary hom 0.5 ~ 10.0mm.

2. Cov ntaub ntawv membrane feem ntau hauv MBR txheej txheem

1) Phaj ncej hom

Cov txheej txheem MBR yog qhov kev thov ntxov tshaj plaws ntawm daim ntawv membrane module, uas zoo ib yam li cov phaj tsis tu ncua thiab thav duab lim xovxwm.

Qhov zoo: kev tsim khoom yooj yim thiab sib dhos, ua haujlwm yooj yim, kho yooj yim thiab tu. Disadvantages: complex sealing, siab poob siab, thiab tsawg packing ceev.

2) Round raj hom

Ua los ntawm daim nyias nyias thiab kev txhawb nqa membrane, nws muaj ob hom kev ua haujlwm: sab hauv siab hom thiab sab nraud hom. Nyob rau hauv kev xyaum, lub sab hauv siab hom yog feem ntau siv, qhov twg cov dej inlet ntws los ntawm sab hauv cov yeeb nkab thiab cov permeate ntws los ntawm sab nraum cov yeeb nkab. Lub membrane txoj kab uas hla yog nruab nrab ntawm 6-24mm.

Qhov zoo: Cov khoom siv ua kua tuaj yeem tswj cov dej ntws tawm, tsis yooj yim thaiv, yooj yim los ntxuav, thiab muaj kev poob siab.

Disadvantage: Tsawg packing ceev.

3) Hollow fiber ntau hom

Sab nraud txoj kab uas hla feem ntau yog 40-250um, thiab sab hauv txoj kab uas hla yog 25-42 μ m. Hauv MBR, cov khoom feem ntau tau muab tso ncaj qha rau hauv lub reactor yam tsis tas yuav tsum muaj cov hlab ntsha siab, tsim kom muaj cov membrane bioreactor immersed. Feem ntau, nws yog ib qho sab nraud siab membrane tivthaiv.

4) Cylindrical hollow fiber membrane

Qhov zoo: siab compressive zog, tsis yooj yim deformed, tsis xav tau cov ntaub ntawv txhawb nqa; High packing ceev; Tus nqi qis; Lub neej ntev, nylon hollow fiber ntau daim nyias nyias nrog lub cev ruaj khov thiab tshuaj lom neeg thiab tsis muaj dej hloov tau siv tau.

Disadvantages: rhiab heev rau clogging, muaj kuab paug, thiab concentration polarization muaj feem cuam tshuam rau kev sib cais ntawm daim nyias nyias.

5) Kauv coil hom

Spiral yob hom, abbreviated li yob hom, feem ntau yog tsim los ntawm cov khoom siv ntxeem tau, nrog daim nyias nyias ntawm ob sab thiab kaw peb sab. Qhov qhib ntug yog txuas nrog lub hauv paus khoom ntxeem tau dej sau cov yeeb nkab nyob rau hauv lub kaw lus. Ib txheej ntawm mesh hom spacer khoom yog muab tso rau ntawm cov dej nyoos sab nraum lub hnab membrane. Lub hnab membrane thiab spacer yog stacked nyob rau hauv ib theem zuj zus thiab nruj nreem dov nyob ib ncig ntawm lub central dej sau yeeb nkab los tsim ib daim nyias nyias. Tom qab ntawd nws yog loaded rau hauv lub cylindrical siab hlab ntsha los tsim ib tug kauv yob membrane tivthaiv. Qhov zoo ntawm cov kauv yob hom membrane tivthaiv yog siab membrane ntim ceev; Cov qauv kev txhawb nqa membrane yog yooj yim; Tsawg concentration polarization; Yooj yim los kho cov dej ntws ntawm lub membrane nto.

Disadvantages: Lub hauv paus yeeb nkab yog yooj yim to to; Qhov chaw sib txuas ntawm daim nyias nyias thiab cov khoom txhawb nqa yog qhov ua rau daim nyias nyias rupture thiab to; Nyuaj hauv kev txhim kho thiab hloov cov membranes.

1. Muab cov cuab yeej txhawb nqa txaus rau daim nyias nyias, ua kom cov kab ntws ntws zoo, thiab tshem tawm cov fab tuag thiab cov dej tsis tu ncua;

2. Tsawg zog noj, txo qhov concentration polarization, txhim kho kev sib cais, thiab txo cov membrane fouling;

3. Qhov siab tshaj plaws tau ntim ntim, yooj yim installation, tu, thiab hloov;

4. Muaj lub zog txhua yam txaus, tshuaj lom neeg thiab thermal stability.

Kev xaiv ntawm cov khoom siv membrane yuav tsum ua tib zoo xav txog lawv cov nqi, ntim ntom ntom, daim ntawv thov scenarios, txheej txheem txheej txheem, membrane fouling thiab tu, thiab kev pabcuam lub neej.

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