Membrane bioreactor yog ib hom tshiab ntawm cov txheej txheem dej khib nyiab uas yog kev sib koom tes ntawm Membrane technology thiab dej phwj tuaj yeem siv kho tshuab. Nws tau tshwm sim hauv Tebchaws Asmeskas xyoo 1970.
Cov txiaj ntsig zoo ntawm MBR hauv kev siv tshuaj kho cov dej khib nyiab
1. Muaj kev sib cais ua haujlwm zoo thiab tuaj yeem lav ua cov khoom zoo
Cov kws ua haujlwm pov tseg muaj ntau cov khoom raug tshem tawm, thiab cov ncua kev kawm thiab cov phom sij hauv cov dej cawv yog ze rau xoom los ntawm kev sib cais membrane. Ntxiv rau, vim tias cov dej khib nyiab muaj cov tshuaj lom neeg, yooj yim yuav ua rau sludge nthuav qhov tshwm sim, hauv cov membrane sib cais, yuav tsis cuam tshuam rau qhov zoo ntawm effluent.
2. High sludge concentration thiab muaj zog biochemical muaj peev xwm
Yuav luag txhua txhua tus tshuab txais sludge tuaj yeem nyob hauv lub reactor, thiab cov sludge concentration ntawm MBR tuaj yeem hloov kho kom zoo. Qhov sludge concentration ntawm MBR tuaj yeem ncav 3000mg /L.Compared nrog cov txheej txheem ib txwm, nws tuaj yeem txhim kho sludge concentration thiab zam qhov poob ntawm cov khoom siv sludge tom qab sludge bulking.Due mus rau qhov siab hloov ntawm qhov zoo thiab ntau ntawm cov tshuaj pov tseg, qhov nce ntawm sludge concentration nce kev kho mob muaj peev xwm ntawm cov reactor thiab tuaj yeem tiv taus kev cuam tshuam ntau dua load.
3. Txhim kho qhov kev ua kom huv kev ua kom huv ntawm refractory organic teeb meem, thiab ua kom lub sijhawm tuav qis rau hydraulic
Lub cev tsis ua haujlwm nyob rau hauv cov tshuaj pov tseg cov dej tsis zoo nyob rau hauv cov tshuaj tiv thaiv, thiab lub sijhawm sib tiv tauj nrog cov kab mob me me yog ntau dua li ntawm cov txheej txheem kev siv roj ntsha, uas tau txais txiaj ntsig zoo rau kev cog qoob loo ntawm qee cov kab mob me me thiab txhim kho kev ua kom huv ntawm refractory organics. Ntxiv rau, vim rau lub siab purification efficiency ntawm refractory organic tebchaw, MBR tuaj yeem luv luv HRT nyob rau hauv qhov ua kom ntseeg tau ntawm qhov tsis zoo.
4. Kev loj hlob zoo ntawm cov kab mob nitrifying thiab zoo ammonia nitrogen tshem tawm cov nyhuv
Daim nyias nyias ntawm MBR tsis tuaj yeem ua rau ammonia nitrogen, ua rau muaj qhov siab ammonia nitrogen tshem tawm tus nqi ntawm MBR feem ntau vim yog muaj cov kab mob nitrifying ntau hauv cov reactor.Under qhov kev txiav txim ntawm membrane sib cais, qeeb qeeb ntawm cov kab mob nitrifying tau khaws cia hauv cov reactor, tsim cov kev mob tsim nyog rau lawv txoj kev loj hlob thiab kev rov ua tiav.Qhov tsub zuj zuj ntawm cov kab mob nitrifying hauv cov reactor ua rau MBR muaj qhov kev tshem tawm siab ntawm ammonia nitrogen.In dhau los kev tsim kho tshuab, suke siv cov txheej txheem sib xyaw ntawm txoj kev sludge txujci, hydrolysis thiab acidification method thiab MBR kho cov dej khib nyiab ntawm lub chaw tsim tshuaj lom neeg. Kev ammonia nitrogen concentration hauv inlet yog 72.8-92.4mg / L, thiab cov txiaj ntsig pom tias yuav luag tag nrho cov ammonia nitrogen raug tshem tawm hauv MBR pas dej, ammonia nitrogen concentration hauv effluent yog 1.4-4.1mg / L, thiab tag nrho kev tshem tawm tus nqi yog 94.5-97.6%.