Activated sludge yog lub tsev rau ntau lab tus kab mob. Nws yog lawv cov haujlwm metabolic uas muab cov sludge qhib nws lub peev xwm los decompose organic pollutants.
Cov kab mob hauv cov activated sludge siv oxygen thaum decomposing organic teeb meem. Yog li ntawd, yaj oxygen yog ntxiv rau hauv dej, txheej txheem hu ua aeration, txhawm rau txhim kho kev ua haujlwm. Cov kev cai nitrogen thiab phosphorus rau cov kab mob activated sludge yog BOD5:N:P=100:5:1.
Hauv kev ua haujlwm txhua hnub thiab kev tswj hwm, nws yog ib qho tseem ceeb los tiv thaiv sludge bulking, lom, thiab kev laus.
Filamentous Bulking: Cov dej noo ib txwm nyob ib puag ncig 99%. Thaum filamentous bulking tshwm sim, cov ntsiab lus noo noo nce, thiab ntim nthuav dav. Txhawm rau tiv thaiv bulking, zaus ntawm kev tshuaj xyuas microscopic yuav tsum tau nce ntxiv thaum ua haujlwm txhua hnub. Thaum kuaj pom cov kab mob filamentous nce ntxiv, cov txheej txheem kev ua haujlwm yuav tsum tau kho tam sim ntawd, lossis cov tshuaj siv tshuaj yuav tsum tau ntxiv los tiv thaiv cov kab mob filamentous ntau dhau.
Sludge Aging: Cov laj thawj tseem ceeb ntawm sludge aging muaj xws li tshem tawm cov sludge untimely, sludge muaj hnub nyoog ntev, lub sij hawm tsis muaj zog load, thiab ntau dhau aeration. Paub qhov laj thawj tso cai rau cov kev daws teeb meem. Piv txwv li, lub hnub nyoog sludge ntev heev yuav tsum tau tshem tawm cov sludge; txo lub zog load yuav tsum txo qis sludge concentration lossis ntxiv cov pa roj carbon; thiab ntau dhau aeration yuav tsum txo qis aeration mus rau qhov tsim nyog (2-3 mg / L).
Sludge Poisoning: Nov yog qhov xwm txheej ntshai tshaj plaws. Cov tshuaj lom neeg feem ntau yog los ntawm cov dej khib nyiab uas muaj cov tshuaj lom neeg ntau. Mob mob lom tuaj yeem tshwm sim tau yooj yim.
Cov Kev Pab Ua Ntej Tom Qab Tshuaj Yeeb:
1. Tam sim ntawd tso tseg qhov kev nkag mus ntxiv ntawm cov tshuaj lom yog cov kauj ruam tseem ceeb tshaj plaws.
2. Rau cov tshuaj lom uas twb muaj lawm nyob rau hauv lub tank kev kho mob lom, tib txoj kev zoo yog kom zoo dilute cov cawv tov nyob rau hauv lub biological kev kho mob tank.
3. Siv cov sludge tshem tawm los tiv thaiv kev cuam tshuam ntawm cov tshuaj lom. Qhov kev txwv rau kev tshem tawm cov sludge nyob ntawm cov zaub mov - mus rau - microbe ratio, nrog rau kev tswj siab tshaj plaws ntawm 0.5.