Lub hnub nyoog sludge biofilm txuas nrog rau cov cab kuj raug tshem tawm hauv MBBR txheej txheem muab qhov chaw nyob zoo rau cov kab mob nitrifying qeeb qeeb thiab tuaj yeem ua tiav cov txiaj ntsig zoo nitrification, thaum lub hnub nyoog raug tshem tawm activated sludge sludge yog luv luv, uas feem ntau ua lub luag haujlwm. ntawm kev tshem tawm cov organic teeb meem, yog li nws zam qhov teeb meem sludge expansion uas yooj yim tshwm sim thaum cov txheej txheem ib txwm tuav lub hnub nyoog sludge ntev kom ua tiav. nitrification. Nws cov sludge load yog qis dua li ntawm cov txheej txheem activated sludge ib leeg, thaum kev kho mob siab dua thiab kev ua haujlwm ruaj khov dua.
Cov txheej txheem MBBR tsis tsuas yog muaj kev ua haujlwm siab thiab ua haujlwm yooj yim ntawm cov txheej txheem activated sludge, tab sis kuj muaj cov yam ntxwv ntawm cov txheej txheem biofilm ib txwm muaj, xws li kev cuam tshuam tsis zoo, lub hnub nyoog sludge ntev thiab tsawg dua cov sludge. Cov txheej txheem muaj cov yam ntxwv hauv qab no:
(1) Tsawg sludge load. Lub hnub nyoog sludge biofilm txuas nrog rau cov cab kuj muab qhov chaw nyob zoo heev rau cov kab mob nitrifying qeeb qeeb thiab tuaj yeem ua tiav cov nitrification zoo, thaum cov sludge raug tshem tawm muaj lub hnub nyoog luv luv thiab tuaj yeem tshem tawm cov teeb meem organic. Yog li ntawd, cov sludge load ntawm no raug tshem tawm thiab txuas microbial co-pas dej txheej txheem kev loj hlob yog qis dua li ntawm cov txheej txheem activated sludge yooj yim, thiab kev kho mob zoo dua thiab kev ua haujlwm ruaj khov dua.
(2) High tshem tawm cov organic teeb meem. Vim yog qhov loj ntawm thaj chaw tshwj xeeb ntawm cov neeg nqa khoom raug tshem tawm, cov neeg coob thiab ntau yam kab mob txuas rau nws qhov chaw thiab sab hauv, cov sludge concentration nyob rau hauv lub reactor feem ntau yog 5 ~ 10 npaug ntawm cov txheej txheem activated sludge, thiab tag nrho cov concentration. yog siab li 30 ~ 40g / L, uas tuaj yeem txhim kho kev tshem tawm cov khoom organic zoo heev.
(3) Zoo denitrification nyhuv. Cov kab mob uas raug tshem tawm thiab txuas mus rau saum npoo ntawm cov cab kuj hauv MBBR reactor yog nyob rau hauv lub xeev aerobic, oxidizing ammonia nitrogen rau nitrate nitrogen, thiab cov facultative thiab anaerobic zones hauv cov cab kuj yog qhov zoo rau kev loj hlob ntawm cov kab mob denitrifying thiab ua lub luag haujlwm ntawm denitrification thiab denitrification, uas muaj txiaj ntsig zoo ntawm kev tshem tawm ammonia nitrogen.
(4) Yooj yim tswj thiab tswj. Tsis tas yuav teeb tsa lub thawv ntim rau hauv lub tank aeration, uas yooj yim rau kev saib xyuas ntawm cov ntim khoom thiab cov khoom siv aeration nyob rau hauv qab ntawm lub tank, txuag peev thiab hauv pem teb.
(5) Nws tsis yog yooj yim los tsim sludge expansion. Cov pob khoom raug tshem tawm yog ntxuav los ntawm cov dej ntws thiab cov cua ntws, uas ua kom muaj kev ua haujlwm ntawm biofilm thiab txhawb cov metabolism, thiab cov kab mob filamentous loj tuaj yeem loj hlob ntawm cov muab tub lim uas fluidizes nrog dej hauv cov tshuaj tiv thaiv tank, yog li txo qhov ua tau. ntawm sludge bulging.