Khoom Description
Kev siv tshuab lom neeg ib txwm yog cov thev naus laus zis tseem ceeb ntawm kev kho dej phwj hauv tsev, thiab nws tau tsim thiab siv thaum ntxov hauv ntau lub tebchaws. Piv txwv li, kev kho mob thaum ntxov ntawm septic tso tsheb hlau luam thiab biogas digesters yog nyob rau hauv qeb ntawm kev kho mob lom technology. Nrog rau kev sib xyaw ua ke ntawm cov cuab yeej technology thiab cov cuab yeej siv tau zoo, ntau thiab ntau cov txheej txheem tshwm sim ntau dua, xws li: txheej txheem AO, txheej txheem A2O, txheej txheem MBR, cov lim dej lom neeg aerated thiab lwm yam. Kev siv tshuab thev naus laus zis tuaj yeem muab faib ua ob pawg: activated sludge method thiab biofilm method. Kab lus no feem ntau qhia txog qhov sib txawv ntawm txoj kev biofilm thiab activated sludge method
Activated sludge method: ib txoj kev kho dej khib nyiab lom neeg raws li kev kho aerobic lom thiab ua kom cov sludge ua lub cev tseem ceeb. Nyob rau hauv cov xwm txheej ntawm kev tsim cov pa oxygenation, cov dej phwj tuaj thiab ntau pawg microbial tau sib xyaw ua ke thiab cog qoob loo kom tsim tau cov sludge. Kev coagulation lom, adsorption thiab oxidation ntawm activated sludge yog siv los tshem tawm cov organic teeb meem hauv cov dej phwj nyob deb nroog.
Lub ntsiab Cheebtsam ntawm activated sludge txoj kev:
1.Aeration tank
2.Secondary sedimentation tank
3. Reflux system
4.Oxygen mov system
Txoj kev Biofilm: ib hom kev kho mob aerobic biological kev siv thev naus laus zis sib npaug rau cov txheej txheem activated sludge. Qhov txawv ntawm cov txheej txheem activated sludge yog "fixation" ntawm nws qhov loj tshaj plaws. Fillers tau ntxiv rau hauv cov tshuaj lom neeg lub tank, thiab nyob rau hauv cov xwm txheej ntawm oxygenation, cov kab mob ntawm cov khoom muab tub lim yog adsorbed los ua biofilm. Thaum cov biofilm tau tsim tiav, qhov saum npoo yog aerobic thiab sab hauv yog anoxic. Thaum cov dej phwj hauv tsev dhau los ntawm biofilm, cov kab mob me me decompose thiab adsorb cov organic teeb meem hauv cov dej phwj nyob deb nroog kom ua tiav purification.
Cov xwm txheej ntawm txoj kev biofilm hauv cov txheej txheem dej phwj hauv tsev yog:
1. Txhawb nqa nqa-filler lossis lim khoom
2. Nutrients-organic teeb meem, NP, thiab lwm yam.
3. Yuav tsum tau cog qoob loo biofilm
