1. Cov ntaub ntawv dej khib nyiab yooj yim
Thaum tsim kev kho mob lom, nws yuav tsum tau tsim raws li cov ntaub ntawv hauv qab no:
(1) Cov dej khib nyiab: nruab nrab txhua hnub cov dej ntim, qhov siab tshaj plaws (feem ntau thiab ntev npaum li cas)
(2) Cov dej khib nyiab zoo: kub, BOD, COD, SS, TN, TP
(3) Kev kho dej zoo: BOD / COD, turbidity lossis TSS, TN, TP, microbial qib, DO, thiab lwm yam.
2. Cov lus qhia rau cov hniav nyiaj hniav kub zoo
Muaj ntau ntau hom kab zoo sib xws, thiab lawv qhov sib txawv tseem ceeb nyob rau hauv qhov ua tau zoo ntawm kev tshem tawm particle. Hlau mesh los yog perforated daim phiaj muaj kev tshem tawm ntau dua li cov sawb lossis cov kab sib txuas. Txawm li cas los xij, sim tsis txhob siv strip-shaped lossis wedge-shaped grilles kom ntau li ntau tau.
Qhov qhib loj ntawm cov hniav nyiaj hniav kub yuav tsum yog 3 hli lossis tsawg dua. Qhov kev xaiv zoo tshaj plaws yog cov hlau mesh lossis perforated grille nrog cov lem lossis nruas, nruab nrog cov khoom siv av nkos thaum ua haujlwm, nrog rau cov hniav ntxuav thiab cov av nkos.
3. Cov lus qhia kom tshem tawm pob zeb / roj
Tsis muaj cov cai tshwj xeeb rau kev tshem tawm cov pob zeb thiab cov roj, thiab nws yog txaus kom ua tau raws li cov kev cai ntawm cov txheej txheem activated sludge. Ntawm chav kawm, nws yog qhov zoo tshaj plaws kom muaj pob zeb thiab roj tshem tawm cov cuab yeej tom qab cov hniav ntxhib. Nws raug pom zoo tias qhov siab tshaj plaws uas tso cai rau cov roj thiab roj nkag mus rau hauv kev kho mob lom yuav tsum qis dua 50mg / L.
4. Hydraulic tuav lub sij hawm (HRT)
HRT yog tsim los ntawm cov yam ntxwv ntawm cov dej khib nyiab zoo, tab sis qhov ntim ntawm cov tshuaj tiv thaiv tank tsis yog txiav txim siab los ntawm HRT nkaus xwb. Rau cov chaw kho dej hauv nroog, raws li qhov tsim nyog MLSS concentration thiab dej kub, kom tsis txhob muaj kev cuam tshuam ntawm peak ammonia nitrogen concentration thaum lub caij nce siab, HRT feem ntau yog xaiv li 6-8 teev (raws li qhov nruab nrab ntws).
5. Sludge load (F/M) thiab sludge retention time (SRT)
Rau cov dej phwj hauv nroog nrog qhov ntsuas kub nruab nrab, kev kho mob lom neeg tuaj yeem ua tiav thaum qhov sib piv F/M qis dua 0.08 kg BOD/kg MLSS.
Rau kev kho mob yooj yim, kev tsim qauv yuav tsum ua kom tiav nitrification, thiab nws raug nquahu kom siv SRT tsawg kawg yog 15 hnub. Qhov kev tawm tswv yim no tuaj yeem ua tiav kev ua haujlwm zoo sludge pom, tab sis nws tsis tuaj yeem lav qhov kev kho mob lom neeg zoo thiab dej zoo.
6. Dissolved oxygen concentration (DO) nyob rau hauv lub aeration tank
Tsawg DO concentration tuaj yeem ua rau sludge deterioration. Rau kev kho dej phwj hauv nroog, DO ntawm lub aeration tank yuav tsum yog tsawg kawg yog 1mg / L.
Txawm li cas los xij, qhov concentration ntawm cov pa oxygen (DO) yuav txawv nyob ntawm qhov zoo ntawm cov dej khib nyiab. Nws raug nquahu kom siv online sensors los ntsuas DO tus nqi hauv lub tank thiab tswj tus nqi aeration.
Cov kev sib tham saum toj no ntawm DO tsuas yog siv tau rau aerobic tso tsheb hlau luam rau kev kho mob lom. Cov huab cua ntws ntawm lub thawv aeration hauv MBR tank yuav tsum ua raws li cov kev txwv uas yuav tsum tau ua los ntawm cov chaw tsim khoom ntawm daim nyias nyias, tsis hais txog DO.
7. Cov khoom noj khoom haus ntxiv
Yog tias cov as-ham uas xav tau rau kev loj hlob microbial tsis muaj dej pov tseg, lawv yuav tsum tau muab ntxiv thiab ntxiv thaum lub sijhawm ua haujlwm. Cov lus hauv qab no muab cov lus pom zoo rau cov khoom noj khoom haus thiab lawv cov ntsiab lus noj:
| Parameter | Khoom noj khoom haus | Ntxiv qhov chaw |
| BOD/COD | Methanol, sodium acetate, acetic acid, khib nyiab molasses | Hypoxia / anaerobic tank |
| nitrogen | Ammonium sulfate lossis ammonium chloride | nkag |
| phosphorus | Potassium phosphate thiab phosphoric acid | nkag |
| alkalinity | Sodium bicarbonate los yog sodium hydroxide | aerobic tank |
8. Ntxiv cov defoamers thiab tshuaj phosphorus tshem tawm cov neeg ua haujlwm
Thaum nws yog ib qho tsim nyog los ntxiv defoamer kom tshem tawm cov npuas dej ntawm lub tank aeration los yog MBR tank, cawv raws li defoamer yuav tsum tau siv, thiab silicon raws li defoamer yog txwv tsis pub kiag li.
Silicon raws li defoamers tuaj yeem ua rau irreversible blockage ntawm daim nyias nyias pores, ua rau ib tug txo nyob rau hauv daim nyias nyias permeability. Thaum nws yog ib qho tsim nyog los ntxiv cov hlau coagulants (txhuas lossis hlau) rau kev tshem tawm phosphorus, cov txheej txheem ntxiv yuav tsum tau tswj kom tsis txhob muaj cov hlau precipitates rau ntawm daim nyias nyias.