Aoyue Lub tub yees muaj kev kho dej phwj siab heev.Xyoo 2013, teb rau tsoomfwv txoj kev hu xovtooj, peb tau tsim peb tus kheej cov dej phwj tuaj kho.Cov dej khib nyiab tuaj yeem tsuas yog tso tawm tom qab raug kho nrog cov dej phwj tuaj thiab ua tau raws li cov qauv kev tso tawm.

Feem ntau hais lus, peb faib cov txheej txheem kho rau hauv plaub theem loj: kev kho ua ntej, kev kho mob lom neeg, kev kho mob siab heev, thiab kev kho sludge.Lub hauv paus ntawm kev kho dej phwj niaj hnub no yog kev kho mob microbial (bacterial).Lub biotechnology uas cultivates microorganisms kom noj cov pa phem yog tam sim no qhov zoo tshaj plaws, nqi-zoo, thiab ib puag ncig tus phooj ywg dej phwj kho tshuab ntawm txhua txoj kev kho.

1.Ua ntej ua

Pretreatment yog qhov pib rau cov kev kho mob microbial (bacterial) tom ntej (tshwj tsis yog rau ib feem me me ntawm cov dej khib nyiab uas tsis siv cov tshuaj microbial).Txij li thaum nws yog ib tug kab mob, nws yuav inevitably muaj tej yam kev cai.Qhov ntau nws ua tau raws li cov xwm txheej rau nws txoj sia nyob, qhov muaj zog nws yuav loj hlob thiab zoo dua nws yuav kho cov dej phwj tuaj.Piv txwv li, qhov kub thiab txias, feem ntau cov kab mob loj hlob zoo tshaj plaws ntawm 30-35 degrees Celsius, nrog pH ntawm 6-8 thiab tsis muaj inhibitory lossis tshuaj lom.Cov pa phem yuav tsum yooj yim noj, xws li cov zoo li txiv hmab txiv ntoo thiab tsis yog yas.Tsis tas li ntawd, cov dej yuav tsum tsis txhob siab dhau lossis qis dhau ib ntus, txhawm rau tiv thaiv cov kab mob kom tsis txhob tuag lossis tshaib plab, thiab lwm yam.

Yog li ntawd, muaj ntau txoj hauv kev hauv qab no rau preprocessing:

Grille: Lub hom phiaj ntawm cov hniav nyiaj hniav kub yog tshem tawm cov khib nyiab loj xws li daim ntaub strips, daim ntawv ntawv, thiab lwm yam los ntawm cov dej, kom tsis txhob cuam tshuam rau kev ua haujlwm ntawm lub twj tso kua dej yav tom ntej.Kev tswj lub pas dej ua ke: Thaum lub sijhawm ua haujlwm hauv lub Hoobkas, feem ntau yuav tsum tau ntws thiab tsis txhob tso dej rau tib lub sijhawm, tso cov dej tuab tib lub sijhawm, thiab tso cov dej tawm hauv tib lub sijhawm.Qhov kev hloov pauv yog qhov tseem ceeb, tab sis cov txheej txheem tom ntej yuav tsum zoo ib yam.Lub pas dej regulating yog ib lub tank cia dej, qhov twg cov dej los ntawm cov kev cob qhia sib txawv thiab lub sij hawm yog thawj concentrated nyob rau hauv ib lub pas dej ua ke.Lub pas dej no feem ntau yuav tsum tau nruab nrog kev ntsuas ntsuas, xws li aeration lossis mechanical stirring, kom sib tov ntau cov dej sib npaug.Yog tias acidity thiab alkalinity tom qab sib tov tsis yog nyob nruab nrab ntawm 6 thiab 9, nws yog ib qho tsim nyog yuav tau ntxiv cov kua qaub los yog alkali los kho.

Cov khoom siv ntsuas kub: Lub hom phiaj yog kho qhov kub thiab txias rau qhov ntau yam uas cov kab mob tuaj yeem tiv taus.Feem ntau nws yog lub tshuab cua txias lossis lub tshuab cua sov.Yog tias qhov kub ntawm nws tus kheej nyob hauv qhov ntau, ces ntu no tuaj yeem raug tshem tawm.

Dosing pretreatment.Yog tias muaj cov khib nyiab ntau dhau los lossis muaj kuab paug siab hauv cov dej, txhawm rau txo qhov siab ntawm kev kho cov kab mob microbial, cov tshuaj siv tshuaj feem ntau tau ntxiv kom txo tau ib feem ntawm cov pa phem thiab cov khib nyiab tshem tawm.Cov cuab yeej nruab ntawm no feem ntau yog huab cua flotation lossis dosing sedimentation tank.Detoxification thiab chain breaking kho.Txoj kev kho no feem ntau yog siv rau kev ua kom siab, nyuaj rau degrade, tshuaj lom dej khib nyiab hauv tshuaj, tshuaj, thiab lwm yam lag luam.Cov txheej txheem dav dav suav nrog hlau carbon, Fenton, electrocatalysis, thiab lwm yam.Los ntawm cov txheej txheem no, cov ntsiab lus ntawm cov pa phem feem ntau tuaj yeem txo qis, thiab qee yam uas tsis tuaj yeem cuam tshuam los ntawm cov kab mob tuaj yeem raug txiav mus rau hauv lub qhov ncauj zoo, hloov cov tshuaj lom mus rau hauv cov tshuaj tsis muaj tshuaj lom lossis tsis muaj tshuaj lom.

2. Kev kho kab mob microbial

Yooj yim muab tso, kab lus no hais txog qee lub pas dej lossis lub tank uas cog cov kab mob kom noj cov pa phem, uas tau muab faib ua anaerobic thiab aerobic theem.

Cov theem anaerobic, raws li lub npe qhia, yog theem txheej txheem uas cov kab mob anaerobic tau cog qoob loo kom haus cov pa phem.Ib qho tseem ceeb ntawm theem no yog sim ua kom lub cev dej tsis tso pa oxygen ntau li ntau tau.Los ntawm ntu anaerobic, ib feem loj ntawm cov pa phem tuaj yeem noj tau.Nyob rau tib lub sijhawm, nws yog qhov xav tsis thoob tias qee cov pa phem uas tsis tuaj yeem raug cov kab mob Aerobic tuaj yeem txiav mus rau hauv cov ntu me uas yooj yim noj, thiab cov khoom muaj txiaj ntsig zoo xws li biogas kuj tuaj yeem tsim.

Aerobic seem yog ntu ntawm Microbiological kab lis kev cai uas oxygen tsim nyog rau kev ciaj sia.Cov khoom siv uas yuav tsum tau nruab rau theem no yog lub tshuab ua pa oxygen, uas ua rau cov dej muaj oxygen rau cov kab mob ua pa.Nyob rau theem no, tsuas yog muab cov pa oxygen txaus, tswj qhov kub thiab pH, cov kab mob tuaj yeem ua rau cov kab mob ua paug, txo lawv cov concentration, thiab cov nqi koj haus tsuas yog cov nqi hluav taws xob ntawm cov pa oxygen charging kiv cua.Puas yog nws tsis raug nqi ntau?Tau kawg, cov kab mob yuav txuas ntxiv tsim thiab tuag, tab sis tag nrho, lawv rov tsim dua sai dua.Lub cev tuag ntawm cov kab mob aerobic thiab qee cov kab mob hauv lub cev ua ke los tsim cov activated sludge.Lub effluent muaj ib tug loj npaum li cas ntawm activated sludge, uas yuav tsum tau muab cais los ntawm cov dej.Activated sludge, tseem hu ua cov kab mob microorganisms, feem ntau yog siv rov ua dua thiab pub rau hauv lub tank aerobic, thaum ib feem me me raug tso tawm kom qhuav thiab thauj dej.

3. Kev kho mob siab heev

Tom qab kev kho cov kab mob microbial, qhov concentration ntawm cov pa phem hauv dej tsis siab lossis qis heev, tab sis tej zaum yuav muaj qee qhov ntsuas tau tshaj li tus qauv, xws li cod, ammonia nitrogen, chromaticity, hnyav hlau, thiab lwm yam. Lub sijhawm no, kev kho mob ntxiv. yog xav tau rau ntau tshaj cov pa phem.Feem ntau, muaj txoj hauv kev xws li huab cua flotation, physicochemical nag lossis daus, crushing, adsorption, thiab lwm yam.

4. Sludge kev kho mob

Qhov tseeb, cov txheej txheem tshuaj lom neeg thiab tshuaj lom neeg tsim muaj ntau cov sludge, uas muaj cov ntsiab lus siab ntawm cov dej yuav luag 99%.Qhov no yuav tsum tau tshem tawm feem ntau ntawm cov dej.Nyob rau lub sijhawm no, lub tshuab nqus dej yuav tsum tau siv, feem ntau yog siv cov tshuab siv, cov cav ntoo, cov centrifuges, thiab cov ntsia hlau stacking tshuab, los kho cov dej hauv cov sludge mus txog 50% -80%, thiab tom qab ntawd thauj mus rau qhov chaw pov tseg, cov chaw tsim hluav taws xob. , cib factories, thiab lwm qhov chaw.