Cov txheej txheem raug dej ntws (xws li cov dej phwj hauv tsev) tuaj yeem suav nrog: cov dej phwj hauv tsev → bar screen zoo → sib npaug ntawm lub tank → anaerobic tank → aerobic tank (MBR membrane) → tshuaj tua kab mob → tso tawm kom tau raws li cov qauv / rov siv dua.
Cov txheej txheem A / O tau muab faib ua ntu anaerobic (A) thiab ntu aerobic (O). Cov seem anaerobic feem ntau yog siv rau kev tshem tawm nitrogen thiab phosphorus, thaum seem aerobic yog siv los tshem tawm cov organic teeb meem ntawm dej. Cov txheej txheem no muaj cov yam ntxwv ntawm cov txheej txheem yooj yim, tsis tshua muaj peev txheej thiab siab tag nrho cov nitrogen tshem tawm tus nqi, tab sis nws yog ib qho nyuaj rau kev txhim kho cov nitrogen tshem tawm efficiency.
Cov txheej txheem A2O yog ib qho kev txhim kho ntawm cov txheej txheem A/O, uas ntxiv cov seem anoxic los ua ib qho anaerobic{1}}anoxic- txheej txheem kho aerobic. Cov txheej txheem no tuaj yeem ua rau tib lub sijhawm thiab muaj txiaj ntsig tshem tawm nitrogen, phosphorus thiab COD los ntawm cov kav dej hauv tsev, thiab yog ib txoj hauv kev kho mob lom neeg tam sim no.
Cov txheej txheem MBR (membrane bioreactor) ua ke nrog kev kho mob lom neeg nrog cov tshuab sib cais membrane. Vim yog cov txheej txheem sib cais ntawm daim nyias nyias, cov dej ntws tawm yog qhov tseeb nrog cov khib nyiab uas tsis tshua muaj thiab tsis muaj zog, thiab nws tuaj yeem tshem tawm cov kab mob thiab cov kab mob, feem ntau ua tau raws li cov qauv siv rov qab siab.
Cov txheej txheem CASS (Circulating Activated Sludge Process) ntxiv cov khoom siv roj ntsha mus rau SBR (Sequencing Batch Reactor) txheej txheem, ua kom muaj kev cuam tshuam tsis tu ncua thiab cuam tshuam cov dej ntws tawm. Cov txheej txheem no suav nrog kev txuag nqi (kwv yees li 20% -30%), kev txuag av (ntau dua 30%), thiab cov nqi khiav lag luam qis dua.
