1.Qhov ratio ntawm carbon, Nitrogen, thiab Phosphorus Sources
Qhov sib piv dav dav ntawm peb yam khoom noj loj (carbon, nitrogen, thiab phosphorus) yog BOD: N: P=100: 5: 1.
2.Dab tsi yog qhov ntsuas kub zoo tshaj plaws rau microbial kev loj hlob thiab kev tsim tawm?
Hauv kev kho dej khib nyiab, qhov ntsuas kub zoo tshaj plaws rau cov kab mob feem ntau yog 16-30 degree, nrog rau qhov siab tshaj plaws ntawm 37-43 degree. Cov kab mob microorganisms yuav tso tseg kev loj hlob qis dua 10 degree. Nyob rau hauv qhov tsim nyog qhov kub thiab txias, rau txhua txhua 10℃qhov kub thiab txias, tus nqi metabolic ntawm cov kab mob nce, thiab COD tshem tawm tus nqi nce li 10%. Piv txwv li, rau txhua txhua 10℃txo qhov kub thiab txias, COD tshem tawm tus nqi txo los ntawm 10%. Yog li ntawd, qhov kev tshem tawm biochemical ntawm COD yog qhov qis dua rau lub caij ntuj no dua li lwm lub caij.
3.Qhov zoo tshaj pH ntau npaum li cas rau cov kab mob kab mob?
Microbial lub neej kev ua ub no thiab metabolism yog ze ze rau pH tus nqi. Feem ntau cov kab mob tuaj yeem hloov mus rau thaj tsam pH ntawm 4.5-9, nrog rau qhov zoo tshaj plaws yog 6.5-7.5. Hauv qab pH 6.5, fungi pib sib tw nrog cov kab mob; ntawm pH 4.5, cov kab mob ua rau muaj kev cuam tshuam tag nrho hauv cov khoom siv tshuaj lom neeg, ua rau muaj kev cuam tshuam loj heev rau sludge. Tshaj pH 9, tus nqi metabolic ntawm cov kab mob yog cuam tshuam. Cov kab mob sib txawv muaj qhov sib txawv pH kam rau ua. Hauv kev kho mob aerobic, pH tuaj yeem sib txawv ntawm 6.5 thiab 8.5; Hauv kev kho kab mob anaerobic, cov kab mob muaj cov kab mob pH nruj dua, qhov zoo ntawm 6.7 thiab 7.4.
4.Dab tsi yog qee yam tshuaj kho dej khib nyiab?
1. Cov kua qaub: sulfuric acid, hydrochloric acid, oxalic acid
2. Alkalis: Txiv qaub, sodium hydroxide (caustic soda)
3. Flocculants: Polyacrylamide
4. Coagulants: Polyaluminium chloride, aluminium sulfate, ferric chloride
5. Oxidizing agents: Hydrogen peroxide, sodium hypochlorite
6. Cov tshuaj txo qis: Sodium metabisulfite, sodium sulfide, sodium bisulfite
7. Cov neeg ua haujlwm ua haujlwm: Ammonia nitrogen tshem tawm cov neeg ua haujlwm, phosphorus tshem tawm cov neeg ua haujlwm, cov hlau hnyav ntes cov neeg ua haujlwm, decolorizing cov neeg ua haujlwm, defoamers ...
8. Lwm cov neeg ua haujlwm: Scale inhibitors, demulsifiers, citric acid ...
5.Dab tsi yog cov txheej txheem ua ntej (lub cev) pretreatment rau cov dej khib nyiab?
Hauv kev kho dej khib nyiab, cov txheej txheem pretreatment feem ntau muaj xws li: cov ntxaij vab tshaus, flotation tanks, sib npaug tanks, theem nrab sedimentation tso tsheb hlau luam, thiab lwm yam.
