Cov khoom siv kho dej phwj hauv tsev kho mob

Main processing unit piav qhia ntawmKev kho dej phwj tuajcog

① Cov kab sib chaws zoo yog nruab nrog ob txheej txheej ntawm coarse thiab nplua daim phiaj, nrog qhov sib txawv ntawm 30 hli ntawm cov kab sib chaws ntxhib thiab 10 hli ntawm cov kab sib chaws zoo.Kev cuam tshuam cov khoom loj ntawm cov teeb meem raug tshem tawm thiab cov khoom muag muag zoo nkauj (xws li cov ntawv khib nyiab, rags, lossis cov khoom noj seem) los tiv thaiv lub twj tso kua mis thiab cov khoom ua haujlwm tom ntej.Thaum muab tso, lub grating yuav tsum tilted ntawm ib tug 60 ° lub kaum sab xis mus rau kab rov tav kab ntawm cov dej ntws kev taw qhia kom pab tau tshem ntawm obstructed residues.Txhawm rau tiv thaiv cov kav dej sedimentation thiab dispersion ntawm cov khoom thaiv, tus tsim yuav tsum tswj xyuas cov dej phwj tuaj ua ntej thiab tom qab grating ntawm 0.6 m / s thiab 1.0 m / s.Cov tshuaj uas cuam tshuam los ntawm grating yuav tsum tau muab tshuaj tua kab mob thaum tshem tawm vim tias muaj cov kab mob loj heev.

② Tswj lub pas dej

nws qhov xwm txheej ntawm cov dej hauv tsev kho mob txiav txim siab qhov tsis sib xws ntawm cov dej nkag los ntawm qhov chaw kho dej phwj tuaj.Yog li ntawd, lub tank tswj tau teeb tsa kom homogenize qhov zoo thiab qhov ntau ntawm cov dej phwj tuaj thiab txo qhov cuam tshuam ntawm kev cuam tshuam ntawm cov khoom siv kho mob tom ntej.Nyob rau tib lub sijhawm, teeb tsa kev sib tsoo override yeeb nkab mus rau lub pas dej sib tsoo.Cov khoom siv aeration yog ntsia rau hauv lub tank tswj kom tiv thaiv cov sedimentation ntawm cov khoom raug tshem tawm thiab txhim kho biodegradability ntawm cov dej khib nyiab.

③ Hypoxic aerobic pas dej ua ke

Anoxic aerobic tank yog cov txheej txheem tseem ceeb ntawm kev kho dej phwj tuaj.Nws qhov zoo dua yog tias ntxiv rau degrading organic pollutants, nws kuj muaj qee yam kev ua haujlwm ntawm nitrogen thiab phosphorus tshem tawm.Cov txheej txheem A / O txuas rau pem hauv ntej anaerobic seem thiab nram qab aerobic seem hauv series, nrog rau ntu A tsis pub tshaj 0.2 mg / L thiab O seem DO = 2 mg / L-4 mg / L.

Hauv theem anoxic, cov kab mob heterotrophic hydrolyze tshem tawm cov pa phem xws li cov hmoov txhuv nplej siab, fibers, carbohydrates, thiab soluble organic teeb meem hauv cov dej phwj tuaj rau hauv cov organic acids, ua rau macromolecular organic teeb meem decompose rau hauv me me molecule organic teeb meem.Insoluble organic teeb meem hloov mus rau hauv soluble organic teeb meem.Thaum cov khoom no ntawm anaerobic hydrolysis nkag mus rau hauv lub tank aerobic rau kev kho mob aerobic, biodegradability ntawm cov dej phwj tuaj yog txhim kho thiab kev ua haujlwm ntawm cov pa oxygen zoo tuaj.

Hauv seem anoxic, cov kab mob heterotrophic ammonifies cov pa phem xws li cov protein thiab rog (N ntawm cov saw organic lossis amino acid hauv cov amino acid) kom dawb ammonia (NH3, NH4+).Nyob rau hauv cov pa oxygen txaus, cov nitrification ntawm cov kab mob autotrophic oxidizes NH3-N (NH4 +) rau NO3 -, thiab rov qab mus rau pas dej A los ntawm reflux tswj.Nyob rau hauv cov xwm txheej anoxic, denitrification ntawm heterotrophic kab mob txo NO3 - rau molecular nitrogen (N2) kom ua tiav lub voj voog ntawm C, N, thiab O hauv ecology thiab paub txog kev kho dej phwj tsis zoo.

④ Cov kab mob tua kab mob

Lub lim dej nkag mus rau hauv lub tank tshuaj tua kab mob kom tswj tau lub sijhawm sib cuag ntawm cov dej phwj tuaj thiab cov tshuaj tua kab mob, kom ntseeg tau tias cov tshuaj tua kab mob tua cov kab mob hauv dej.Cov effluent yog tawm mus rau hauv lub municipal pipeline network.Raws li "Cov Qauv Ntsuas Dej Tsis Zoo rau Cov Tsev Kho Mob", lub sijhawm sib cuag ntawm cov dej phwj tuaj ntawm cov tsev kho mob kis kab mob yuav tsum tsis pub tsawg dua 1.5 teev, thiab lub sijhawm sib cuag ntawm cov dej phwj tuaj ntawm cov tsev kho mob yuav tsum tsis pub tsawg dua 1.0 teev.