Lub sijhawm khaws cia tank ntawm MBBR tank yog dab tsi?
MBBR (Moving Bed Biofilm Reactor) yog cov cuab yeej siv tshuaj lom neeg zoo siv rau kev kho dej khib nyiab. Nws muab cov txiaj ntsig zoo ntawm cov tshuab ua kom cov sludge thiab biofilm los ntawm kev ntxiv cov khoom ntim siab-ntev tshem tawm cov khoom siv rau lub reactor txhawm rau ua kom qhov txuas thiab qhov chaw loj hlob rau cov kab mob, yog li txhim kho kev kho mob.
Kev suav ntawm Hydraulic Retention Time
Hydraulic Retention Time (HRT) yog hais txog lub sijhawm nyob nruab nrab ntawm cov dej khib nyiab hauv lub reactor. Cov mis rau xam lub sijhawm hydraulic tuav ntawm lub pas dej MBBR yog raws li hauv qab no:
HRT =QV
Qhov twg:
V yog qhov ntim tau zoo ntawm lub reactor (m3), txiav txim siab tias lub reactor tsis yog tag nrho cov dej hauv kev ua haujlwm tiag tiag, qhov ntim sib haum rau qhov dej qhov tob yog feem ntau coj mus.
Q yog qhov muaj peev xwm ntws tau (m3/h).
Yuav ua li cas xam cov Sludge Retention Time?
Sludge Retention Time (SRT), tseem hu ua biomass retention time, hais txog lub sijhawm nyob nruab nrab ntawm biomass (sludge) hauv qhov system.
Nyob rau hauv MBBR system, xam SRT ncaj qha yog complex vim lub system tsim tshwj xeeb (biofilm txuas rau lub muab tub lim es tsis txhob pub dawb rau hauv dej). SRT feem ntau yog tswj tsis tau ncaj qha los ntawm kev tswj cov kab ke sludge tawm thiab saib xyuas cov biofilm thickness es tsis suav ncaj qha.
Rau MBBR systems, vim hais tias feem ntau ntawm cov kev kho mob lom tshwm sim ntawm biofilm nto ntawm lub muab tub lim, qhov kev ua tau zoo ntawm lub cev tsis yog nyob ntawm lub sijhawm tuav hydraulic nkaus xwb tab sis kuj nyob ntawm qhov tuab thiab kev ua haujlwm ntawm biofilm. Yog li ntawd, tus yuam sij rau kev tswj thiab optimizing MBBR systems tsis yog tsuas yog los ntawm kev xam thiab kho HRT tab sis kuj saib xyuas thiab tswj kev noj qab haus huv ntawm biofilm ntawm lub muab tub lim.
Rau cov kev suav tshwj xeeb thiab kev tsim qauv, cov yam ntxwv xws li cov yam ntxwv ntawm cov dej khib nyiab, cov hom phiaj kev kho mob, cov qauv tsim cov reactor, thiab lwm yam, yuav tsum xav txog. Kev hloov kho thiab kev ua kom zoo dua tuaj yeem xav tau kev coj ua engineering thiab kev paub dhau los.
Rau cov txheej txheem kho sludge ib txwm siv, peb tuaj yeem suav Sludge Retention Time (SRT), tseem hu ua Solid Retention Time (SST) lossis Biomass Retention Time. Nov yog ib qho piv txwv yooj yooj yim los pab koj nkag siab yuav ua li cas xam SRT.
Kev xav:
Lub ntim muaj zog txhua hnub: 10,000 m3/ hnub
Influent Suspended Solids (SS) concentration: 200 mg/L
Effluent SS concentration: 30 mg / L
Txhua hnub sludge tawm: 200 m3/ hnub
Sludge SS concentration: 10, 000 mg/L
Mixed Liquor Suspended Solids (MLSS) concentration hauv reactor: 3,000 mg/L
Qhov ntim tau zoo ntawm lub reactor: 5,000 m3
Cov kauj ruam rau xam SRT:
Muab xam cov load SS txhua hnub (piv txwv li, tag nrho cov nyiaj SS nkag mus thiab tawm hauv lub reactor).
Influent SS tag nrho=Influent ntim × Influent SS concentration=10, 000 m3/ hnub × 200 mg / L
Effluent SS tag nrho=Effluent ntim × Effluent SS concentration=10, 000m3/ hnub × 30 mg / L
Sludge SS tag nrho=Sludge paug × Sludge SS concentration=200 m3/ hnub × 10, 000 mg/L
Xam tag nrho SS hauv qhov system (MLSS).
Tag nrho SS hauv qhov system=Qhov ntim tau zoo ntawm lub reactor × MLSS concentration=5, 000 m3× 3, 000 mg/L
Xam SRT.
SRT (Sludge Retention Time)=Tag Nrho SS hauv qhov system / (Influent SS tag nrho - Effluent SS tag nrho + Sludge SS tag nrho)
Cia peb suav cov nqi tshwj xeeb.
Raws li cov kev suav sau saum toj no, Sludge Retention Time (SRT) ntawm qhov kev kho cov kab mob sludge no yog kwv yees li 4.05 hnub. Qhov no txhais tau hais tias lub sijhawm nyob nruab nrab ntawm sludge nyob rau hauv lub system yog 4.05 hnub ua ntej nws tawm ntawm lub system. Qhov txiaj ntsig no yog qhov tseem ceeb rau kev nkag siab thiab tswj cov sludge qhov kev puas tsuaj ntawm cov kab mob lom neeg, cov txheej txheem kev kho mob, thiab kev saib xyuas tsim nyog (xws li sludge tawm).