1. Ua ua haujlwm cov ntsiab cai thiab kev ua haujlwm yooj yim
Cov txheej txheem txhim kho kho kom zoo nkauj. Nws cov khoom siv kho me nyuam yog ib qho kev ua ntu ntu txuas ntxiv (SBR). Cov txheej txheem txhim kho tshem tawm ntau yam kev kho qauv. Tag nrho cov reactors muaj kev lag luam nyob hauv ib qho sbr reactor. Lub sij hawm tswj tau yog siv los ua tiav cov hom phiaj ua haujlwm ntawm txhua theem hauv cov arer reactor. Tus qauv ntws tau ua tiav tag nrho, ua tiav thawb lub sijhawm, thiab cov organic cov kuab paug muaj kev ua qias tuaj raws sijhawm.
Tag nrho cov txheej txheem SBR Txheej Txheem Muaj tsib kauj ruam pib: Dej inlet, cov tshuaj tiv thaiv, kev ua yeeb yam, dej ntws tawm. Cov kauj ruam no tau nqa tawm ua ntu zus nyob rau hauv reactor nruab nrog aeration lossis agitation. Lub voj voog no rov ua nws tus kheej ib zaug ntxiv thaum lub sijhawm kho mob kom ua tiav cov txiaj ntsig kev xav tau.
1.1 Txheej Txheem Ua Haujlwm
Ua ntej pov tseg yog txhaj, tus reactor yog hom standby. Cov kua dej uas ua kua tom qab ua kom dej tau tso tawm, thiab cov reactor tseem muaj qhov siab -}}}} masterration ua kom sib xyaw. Cov dej qib hauv cov reactor yog nws qis tshaj. Dej phwj yog txhaj, thiab cov tshuaj tiv thaiv dhau los ua tiav. Hauv qhov kev txiav txim no, reactor kuj ua raws li lub tank regulating. Yog li ntawd, cov txheej txheem SBR tsis tshua muaj kev cuam tshuam los ntawm kev thauj khoom hloov pauv thiab hloov pauv hloov hauv cov dej ua tau zoo thiab muaj nuj nqis.
1.2 Cov Txheej Txheem
Thaum lub pov tseg mus txog ib qho siab tau txiav txim siab, cov tshuaj tiv thaiv txheej txheem pib. Kev ua haujlwm tsim nyog tuaj yeem xaiv raws cov hom phiaj sib txawv. Piv txwv li, tswj lub sijhawm Aeration tuaj yeem ua tiav cov kev xav tau, xws li BY tawm, kev zom, thiab phosphorus pa. Kev tswj hwm lub aeration lossis agitator siv tau tuaj yeem tswj hwm Anaerobic lossis anoxic cov xwm txheej nyob rau hauv lub reactor, enabling kev zom thiab kev zom zom thiab tsis lees txais.
1.3 sedimentation cov txheej txheem
Hauv cov txheej txheem no, cov sbr reactor raws li lub tank theem nrab. Aeration and agitation are stopped, allowing the mixed liquor to remain static, and the activated sludge to settle by gravity and separate from the supernatant. Sludge sedimentation nyob rau hauv sbr reactor tshwm sim hauv lub xeev zoo li qub, txo qhov cuam tshuam sab nraud. Tsis tas li ntawd, zoo li cov teeb meem tsis tu ncua kev ua haujlwm tsis tu ncua nqa lub teeb tam sim ntawd, muaj kev nquag ua haujlwm. Yog li ntawd, cov txheej txheem SBR muaj cov sijhawm luv luv thiab lub siab ua kom zoo, tswj cov kev ua kom zoo nkauj. Lub sijhawm sib luag yog txiav txim los ntawm cov hom dej khib nyiab thiab kev kho mob, feem ntau yog kwv yees li 1 mus rau 2 teev.
1.4 Kev Xa Tawm Cov Txheej Txheem
Tus supernatant tom qab sedimentation yog tso tawm, rov kho cov dej qib kom tsawg kawg thaum pib lub voj voog. Cov dej uas seem tau ua haujlwm raws li cov dej ncig ua si ncig ua si thiab dej ua dej. Feem ntau ntawm cov kev ua haujlwm sludge ua hauj lwm pab rov qab sludge rau lub voj voog txuas mus ntxiv, thaum lub caij sludge yog tso tawm.
1.5 txheej txheem kaw
Thaum lub sbr tank yog kaw, cov kab mob sib luag ntawm cov pa oxyigen thiab ua kom muaj qee qhov kev tshem tawm thiab kev teeb meem ntawm nitrogenous, tsim cov kev tshem tawm ntawm lub sijhawm tom ntej no. Vim tias cov kab mob sib deev yog nyob rau hauv lub xeev ntawm kev tshaib plab tom qab lub sijhawm tsis sib xws, cov kev ua kom qis dua muaj qhov chaw loj dua. Yog li ntawd, thaum lub sijhawm lub sijhawm muaj txiaj ntsig ntawm cov voj voog tshiab, kev ua haujlwm sludge tuaj yeem siv nws cov kev tshem tawm muaj teeb meem thawj zaug. Tsis tas li ntawd, cov txheej txheem standby ntxiv ntxiv txo cov pa oxygen theem hauv lub tank, muab cov kev ua kom haum rau cov txheej txheem denitrification.
2. Kev ua txuj ci ntawm cov txheej txheem
(1) Cov txheej txheem ntws yog yooj yim, kev ua haujlwm yog hloov tau, thiab tus nqi siv peev yog tsawg. Cov khoom siv tseem ceeb hauv cov txheej txheem SBR yog ib qho sbr reactor. Los ntawm cov kev tshawb fawb saum toj no, nws tuaj yeem pom tias SBR tank ntau dua: anerobic tank (anerobic thiab aerobic tank thiab lub tsev ua haujlwm tank thiab lub cev ua ntu zus. Yeej, txhua qhov kev ua haujlwm tau ua tiav nyob rau hauv xws li cov tshuaj reactor, thiab kev sib xyaw ua ke, kev zom, phosphorus nqus thiab tso tawm, thiab kev sib cais phud thiab av tsis sib cais. Nws tsis tas yuav muaj ib qho khoom siv hauv qab theem nrab thiab sludge cov khoom rov qab, thiab feem ntau tsis tas yuav muaj kev tswj lub tank thiab lub xub ntiag tedimation tower. Yog li ntawd, cov dej phwj tawm siv cov txheej txheem hauv paus nce qib siab txo tus nqi kev tsim kho, txuag tau qhov zoo ntawm kev ua lag luam thiab chaw txuag.
(2) Cov nyhuv kho yog qhov zoo thiab qhov effluent yog txhim khu kev qha. Los ntawm cov kev pom ntawm cov tshuaj tiv thaiv kinetics, cov sbr reactor muaj nws cov txiaj ntsig tshwj xeeb. Raws li cov tshuaj tiv thaiv kab mob ua haujlwm yooj yim, qhov tam sim no tsis muaj kev pab cuam cuam tshuam txog kev siv hluav taws xob feem ntau muaj ob qho dej ntws: ua tiav kev sib xyaw thiab ntsaws. Nyob rau hauv kev nruam Flow Flow Reactor, muaj tsuas yog rov qab sib xyaw rau txhua ntu ntawm lub tshuab ua kom sov, thiab tsis muaj qhov sib xyaw ntsug ". Lub substrate concentration maj mam ua los ntawm qhov siab tshaj plaws ntawm lub inlet ntawm qhov hluav taws xob, muab kev tsav tsheb loj tshaj plaws rau cov tshuaj tiv thaiv biochemical. Thaum lub sijhawm ua haujlwm tawm tsam ntawm kev ua haujlwm, txawm hais tias cov kua xyaw sib xyaw ua ke txo lub sijhawm, uas yog sib piv rau lub xeev ntsaws rau lub sijhawm kev paub. Yog li ntawd, cov tshuaj rearror kom paub cov yam ntxwv ntawm ob reactors hauv kev ntws mus tsis tu ncua.
(3) Phosphorus tshem tawm thiab cov nyhuv nitrogen tshem tawm. Phosphorus tshem tawm thiab nitrogen tshem tawm yog ib txoj kev sib txawv. Nws yog ib qho tsim nyog los muab anaerobic, anoxic thiab aerobic kev kho kom ua tiav lub hom phiaj ntawm nitrification, denitricification nqus thiab tso tawm. Hauv cov qauv sbr, sib txawv tuaj yeem ua tiav hauv ib qho reactor ib zaug xwb. Vim tias cov qauv sbr tau yooj yim ua tau qhov kev hloov pauv ntawm anaerobic, anerobic thiab aerobic lub xeev kev txaus siab rau kev tshem tawm ntawm cov neeg lom neeg thiab cov phosphorus tshem tawm.
(4) sludge zoo los ua tau zoo. Ua kom sludge bulking yog ib qho teeb meem ib txwm muaj nyob rau hauv kev ua kom tau kev kho mob sludge kev kho mob. Ntau tshaj 90% ntawm sludge bulking teeb meem yog tshwm sim los ntawm filamious sludge bulking. Vim tias qhov kev loj hlob dhau los ntawm cov kab mob filamentous, kev loj hlob ntawm sludge floibs, thiab ntau cov flowseed thiab ntau cov khoom sedimentation thiab cov pob zeb sediment. Tus txheej txheem sbr tau zoo tswj tau kev loj hlob ntau ntawm filamentous kab mob, thiab sludge svi yog tsawg. Nws yog tus txheej txheem nrog rau cov sludge zoo tshaj tawm kev ua tau zoo.
Muaj zog haum rau kev hloov pauv hauv dej zoo thiab dej ntau piv. Cov nyhuv kho mob yuav cuam tshuam los ntawm dej kom zoo thiab dej ntau, thiab cov kab mob sib xws, thiab cov microorganism feem ntau yog cov teeb meem nyob hauv lawv qhov chaw nyob. Yog li ntawd, los ntawm kev tsom xam theoretical, cov sib xyaw ua ke tag nrho kom muaj zog tiv thaiv lub zog poob siab tshaj qhov ntsaws Flator. Thaum lub SBR txheej txheem yog ib qho kev hloov kho zoo tshaj plaws, nws cov qauv kev kho kom zoo nkauj tswj cov yam ntxwv ntawm kev ua tiav cov reactor. Yog li ntawd, nws tuaj yeem tiv thaiv loj loj hauv dej zoo thiab ntau thiab muaj peev xwm tiv taus withescle thauj.