I. Ib txwm siv SBR txheej txheem ua haujlwm ntws
Cov txheej txheem SBR ib txwm muaj yog lub sijhawm zoo ib yam- cov txheej txheem tswj hwm, ua tiav tsib theem- muaj zog, tshuaj tiv thaiv, sedimentation, effluent, thiab idle- nyob rau hauv ib lub tank tshuaj tiv thaiv. Tag nrho cov txheej txheem rov ua dua tsis tu ncua, ua tiav kev kho dej tsis tu ncua.
Kev kub ntxhov → Kev tawm tsam → Sedimentation → Effluent → Idle
(Tsib -theem cyclical ua haujlwm)
II. Kev piav qhia ntxaws txog tsib theem ua haujlwm
Kauj Ruam 1: Lub Cev Muaj Zog (Fill)
Nyob rau hauv lub influent theem, cov dej khib nyiab nkag mus rau hauv cov tshuaj tiv thaiv tank thiab sib tov nrog high -concentration activated sludge mix cawv twb muaj lawm. Vim hais tias cov tshuaj tiv thaiv tank khaws cov siab -concentration activated sludge mix cawv los ntawm lub voj voog dhau los, nws kuj ua haujlwm raws li lub tank sib npaug, muaj txiaj ntsig zoo rau kev hloov pauv hauv cov ntim muaj txiaj ntsig thiab zoo.
Lub luag haujlwm tseem ceeb: Siv tag nrho cov khoom seem ntawm cov sludge los ntawm lub voj voog dhau los kom ua tiav thawj zaug adsorption thiab degradation ntawm cov pa phem.
Theem 2: React Theem (React)
Thaum cov dej khib nyiab mus txog qhov ntim tau ua ntej, nws nkag mus rau theem tshuaj tiv thaiv. Nyob rau theem no, cov cawv sib xyaw ua rau muaj kev kho mob lom neeg los ntawm kev ua kom aeration lossis agitation. Nyob ntawm cov hom phiaj kev kho mob, nws tuaj yeem ua haujlwm hauv aerobic, anoxic, lossis anaerobic mob, ua tiav ntau yam haujlwm xws li tshem tawm cov teeb meem organic, nitrification, denitrification, thiab tshem tawm cov phosphorus lom.
Lub luag haujlwm tseem ceeb: Qhov no yog theem tseem ceeb ntawm cov txheej txheem SBR, txiav txim siab qhov kev tshem tawm cov pa phem kawg.
Kauj Ruam 3: Teeb Meem
Tom qab cov tshuaj tiv thaiv ua tiav, aeration thiab agitation raug nres, thiab cov cawv sib xyaw nkag mus rau hauv lub xeev zoo li qub. Cov theem no yog sib npaug rau lub tank thib ob nyob rau hauv cov txheej txheem activated sludge ib txwm, qhov twg sludge ua tiav cov khoom-kua sib cais los ntawm lub ntiajteb txawj nqus. Vim tias SBR yog qhov zoo li qub thaum lub sij hawm daws teeb meem, tsis muaj kev cuam tshuam hydraulic, qhov kev daws teeb meem feem ntau yog qhov zoo tshaj plaws ntawm cov tsoos thib ob lub tank.
Lub luag haujlwm tseem ceeb: High-cov khoom zoo- cov kua sib cais kom paub meej cov dej ntws tawm.
Theem 4: Theem Decant
Tom qab kev daws teeb meem, lub supernatant yog tawm los ntawm cov tshuaj tiv thaiv tank, uas yog cov effluent kho. Nyob rau tib lub sijhawm, qhov tsim nyog ntawm cov sludge ntau dhau raug tshem tawm raws li xav tau los tswj kom muaj qhov tsim nyog sludge concentration hauv lub cev. Cov txheej txheem SBR feem ntau yog siv cov decanters rau kev tso dej, kom ntseeg tau tias tsuas yog cov supernatant raug tso tawm yam tsis muaj kev cuam tshuam rau hauv qab sludge txheej.
Lub luag haujlwm tseem ceeb: Tshem tawm cov dej huv uas tsim nyog thiab tshem tawm cov sludge ntau dhau los tswj cov sludge concentration.
Theem 5: Idle Phase
Tom qab cov dej ntws tawm, lub kaw lus nkag mus rau theem tsis ua haujlwm ua ntej mus rau theem tom ntej. Lub hom phiaj ntawm theem no yog tswj cov kev ua ntawm cov activated sludge; tsim nyog stirring los yog micro-aeration yuav ua tau raws li xav tau. Yog tias xav tau kev txuag hluav taws xob lossis phosphorus tso tawm raws li qhov xav tau anaerobic, nplawm lossis aeration yuav raug tshem tawm.
Lub luag haujlwm tseem ceeb: Kev tswj xyuas cov dej sludge thiab npaj rau lub voj voog tom ntej.
III. Summary of Process yam ntxwv
Kev ua haujlwm tsis sib xws ntawm cov txheej txheem SBR muab nws qhov tshwj xeeb zoo: tag nrho cov txheej txheem kev kho mob los ntawm kev muaj txiaj ntsig mus rau effluent tuaj yeem ua tiav hauv ib lub tank tshuaj tiv thaiv, tshem tawm qhov xav tau rau lub tank thib ob thiab cov sludge rov qab los, thiab ua kom muaj kev tswj xyuas meej ntawm cov hom phiaj kev kho mob sib txawv los ntawm kev tswj lub sijhawm hloov pauv.
Lub sijhawm ua haujlwm ntawm txhua theem tuaj yeem hloov kho tau yooj yim raws li cov dej muaj txiaj ntsig zoo thiab kev kho mob, ua rau cov txheej txheem SBR hloov tau zoo rau kev hloov pauv ntawm cov dej zoo thiab kom muaj nuj nqis. Tsis tas li ntawd, cov dej kho tuaj yeem khaws cia rau hauv lub reactor thiab tso tawm tsuas yog tom qab dhau qhov kev ntsuas dej zoo, ntxiv kom ntseeg tau qhov ruaj khov ntawm cov dej zoo.
