Lub hauv paus ntsiab lus ua haujlwm ntawmMBBR Moving Bed Biofilm Reactorbio-carriers yog raws li kev sib koom ua ke ntawm biofilm technology thiab fluidization.
Nws cov txheej txheem tseem ceeb suav nrog kev siv cov neeg nqa khoom tshem tawm kom ua tiav kev kho dej khib nyiab. Cov txheej txheem suav nrog ntxiv cov cab cab uas raug tshem tawm nrog qhov ceev ze ntawm cov dej rau hauv lub reactor. Nyob rau hauv aeration los yog dej ntws, cov cab kuj ua fluidized, tsim ib tug triphasic (gas-kua- khoom) ib puag ncig zoo rau microbial kev loj hlob. Qhov saum npoo ntawm cov neeg nqa khoom tshwj xeeb tau kho kom muaj cov qauv ntxhib, ntxeem tau thiab hydrophilicity, muab qhov chaw zoo tagnrho rau kev sib txuas ntawm microbial. Cov kab mob microorganisms tsim biofilms ntawm cov cab kuj thiab degrade cov organic teeb meem hauv cov dej khib nyiab los ntawm cov txheej txheem metabolic.
MBBR cov cab kuj muaj cov qauv stratified sab hauv thiab sab nraud:
Sab hauv ntawm cov neeg nqa khoom, vim tsis muaj cov pa oxygen nkag mus, tsim cov anaerobic lossis facultative anaerobic ib puag ncig haum rau kev loj hlob ntawm cov kab mob anaerobic xws li cov kab mob denitrifying. Sab nrauv, ncaj qha raug rau oxygen thiab dej khib nyiab, muab cov xwm txheej rau cov kab mob aerobic. Qhov stratification no tso cai rau txhua tus neeg nqa khoom ua haujlwm raws li lub tshuab hluav taws xob me me, ib txhij ua kom yooj yim nitrification (qhov twg cov kab mob aerobic hloov ammonia nitrogen rau hauv nitrate) thiab denitrification (qhov twg cov kab mob anaerobic txo nitrate rau hauv cov pa nitrogen), ua kom cov nitrogen tshem tawm tau zoo. Tsis zoo li cov neeg nqa khoom ib txwm muaj, MBBR cov neeg nqa khoom tswj xyuas kev sib cuag nrog cov dej khib nyiab los ntawm cov kua dej, tsim "cov ntaub ntawv xov tooj ntawm tes." Qhov no tsis tsuas yog zam cov teeb meem cuam tshuam nrog cov nqa khoom ruaj khov tab sis kuj tseem ua rau muaj kev sib koom ua ke ntawm kev tshem tawm cov sludge thiab txuas biofilms, tag nrho siv qhov chaw reactor thiab txhim kho kev kho mob.
Cov txheej txheem sib xyaw ua ke qhov zoo ntawm ob qho tib si activated sludge thiab biofilm technologies:
siab sludge concentration txhim khu kev tiv thaiv kev poob siab loads, thaum lub xeev fluidized txhawb microbial txuas ntxiv, tiv thaiv kev ua haujlwm poob vim biofilm aging thiab detachment. Tsis tas li ntawd, qhov tshwj xeeb ntawm thaj chaw siab thiab microbial txuas lub peev xwm ntawm cov neeg nqa khoom ua rau lawv tuaj yeem tuav ntau cov kab mob hauv ib chav tsev ntim, txhim kho kev tshem tawm cov khoom organic thiab ammonia nitrogen.
