Kev kho dej khib nyiab anaerobic muaj lub koob npe zoo rau kev kho kom zoo thiab tsis muaj ntxhiab tsw ntawm cov dej ntws uas muaj cov pa phem ntau ntawm cov organic. Yog tias koj tab tom kawm txog cov txheej txheem kev kho mob lom neeg, koj yuav tsis xav nug cov lus nug xws li "Kev kho dej khib nyiab anaerobic yog dab tsi?" Thiab "Yuav ua li cas anaerobic wastewater kho ua hauj lwm?"
Kab lus no yuav muab cov lus qhia yooj yim rau kev kho mob anaerobic thiab muab faib ua peb ntu los pab koj paub meej tias nws ua haujlwm li cas thiab vim li cas koj siv nws.
1. Kev kho dej khib nyiab anaerobic yog dab tsi?
2. Kev kho dej khib nyiab anaerobic ua haujlwm li cas?
3. Hom kev kho dej khib nyiab anaerobic muaj xws li
4.Dab tsi Aquasust tuaj yeem pab koj kho cov dej khib nyiab anaerobic?
Kev kho dej khib nyiab anaerobic yog dab tsi?
Kev kho dej khib nyiab anaerobic yog cov txheej txheem lom neeg uas cov kab mob ua kom cov pa phem hauv cov organic tsis muaj oxygen. Hauv lub voj voog kev kho anaerobic, cov dej khib nyiab nkag mus rau hauv bioreactor hlab ntsha. Lub bioreactor muaj cov khoom tuab tuab hu ua sludge, uas yog tsim los ntawm cov kab mob anaerobic thiab lwm yam kab mob. Cov kab mob anaerobic lossis "cov kab mob anaerobic" zom cov tshuaj biodegradable tam sim no nyob rau hauv cov dej khib nyiab, yog li tsim cov pa oxygen tsawg (BOD), tshuaj lom neeg oxygen xav tau (COD) thiab / lossis tag nrho cov khib nyiab tshem tawm (TSS) Cov effluent yog siv los ntawm- cov khoom ntawm biogas.
Kev kho cov dej khib nyiab anaerobic yog siv los kho ntau yam dej khib nyiab los ntawm kev ua liaj ua teb, zaub mov thiab dej haus, khoom noj siv mis, pulp thiab ntawv, thiab textile industries, nrog rau cov dej phwj hauv nroog thiab cov dej khib nyiab. Kev siv tshuab anaerobic feem ntau yog siv rau cov kwj deg uas muaj cov organic ntau ntau ( ntsuas raws li siab BOD, COD lossis TSS), feem ntau ua ntej kho aerobic. Kev kho anaerobic kuj tseem siv rau cov ntawv tshwj xeeb, xws li kev kho cov dej khib nyiab nrog cov organic lossis chlorinated organics, thiab tsim nyog rau kev kho cov dej khib nyiab sov.
Kev kho dej khib nyiab anaerobic ua haujlwm li cas?
Kev kho dej khib nyiab anaerobic yog kev kho mob lom neeg uas siv cov kab mob anaerobic los decompose thiab tshem tawm cov pa phem hauv cov dej khib nyiab. Txawm hais tias cov txheej txheem kho anaerobic tuaj yeem siv ntau hom, lawv feem ntau suav nrog qee hom bioreactor lossis chaw cia khoom uas tuaj yeem tswj hwm qhov chaw tsis muaj oxygen uas xav tau los txhawb txoj kev zom zaub mov anaerobic.
Cov txheej txheem dej khib nyiab anaerobic suav nrog ob theem: theem acidification thiab methane ntau lawm theem, ob qho tib si nyob rau hauv ib qho dynamic equilibrium. Nyob rau hauv thawj theem tsim cov kua qaub, cov kab mob anaerobic decompose complex organic tebchaw rau hauv yooj yim short-chain volatile organic acids. Qhov thib ob theem, hu ua methane ntau lawm theem, muaj ob kauj ruam: acetic acid ntau lawm, cov kab mob anaerobic synthesize organic acids los tsim acetate, hydrogen thiab carbon dioxide; thiab methane ntau lawm, thiab tom qab ntawd cov kab mob anaerobic ua rau cov molecules tsim tshiab, tsim cov roj methane thiab carbon dioxide. Cov khoom siv los ntawm cov khoom no tuaj yeem rov ua dua los siv roj, thiab cov dej khib nyiab tuaj yeem siv rau kev kho mob ntxiv thiab / lossis tawm.
Raws li kev thov tshwj xeeb thiab cov tseev kom muaj, cov tshuab anaerobic digestion tuaj yeem tsim los ua ib-theem lossis ntau theem, uas txhais tau hais tias lawv tuaj yeem nruab nrog cov tso tsheb hlau luam cais thiab cov khoom siv bioreactor.
Feem ntau hom kev kho dej khib nyiab anaerobic suav nrog
Anaerobic pas dej
Anaerobic lagoons yog lub pas dej loj uas neeg tsim, feem ntau ntawm 1-2 acres loj thiab mus txog 20 feet tob. Lawv tau siv dav hauv kev kho cov dej khib nyiab ua liaj ua teb los ntawm kev tsim cov nqaij, nrog rau kev kho ntawm lwm cov dej khib nyiab hauv kev lag luam, thiab ua cov kauj ruam tseem ceeb rau kev kho dej khib nyiab hauv nroog. Cov dej khib nyiab feem ntau yog xa mus rau hauv qab ntawm lub pas dej, qhov chaw nws nyob rau hauv cov txheej txheem ua kua sab saud thiab cov txheej txheej semi-solid sludge. Cov txheej txheem ua kua tiv thaiv cov pa oxygen kom tsis txhob ncav cuag cov sludge txheej, cia cov txheej txheem anaerobic digestion kom decompose cov organic teeb meem hauv cov dej khib nyiab. Qhov nruab nrab, cov txheej txheem no yuav siv sijhawm tsawg li ob peb lub lis piam lossis ntev li rau lub hlis kom coj BOD / COD qib mus rau lub hom phiaj. Cov kab mob anaerobic muaj txiaj ntsig zoo rau qee qhov chaw ib puag ncig, xws li dej sov sov (85-95 degree F) thiab ze-neutral pH. Yog li ntawd, kev tswj xyuas cov xwm txheej zoo yuav ua rau muaj kev ua haujlwm ntawm cov kab mob anaerobic, yog li txo cov dej khib nyiab. Tus nqi ntawm kev ua pa anaerobic kuj tseem raug txwv los ntawm ntau yam, suav nrog kev hloov pauv hauv BOD / COD concentration thiab muaj cov tshuaj xws li sodium, potassium, calcium, thiab magnesium.
Anaerobic sludge txaj reactor
Cov sludge txaj reactor yog ib qho kev kho mob anaerobic uas cov dej khib nyiab dhau los ntawm qhov "daim pam" ntawm cov sludge tshem tawm. Thaum cov kab mob anaerobic nyob rau hauv cov sludge zom cov organic Cheebtsam nyob rau hauv cov dej khib nyiab, lawv muab faib mus rau hauv cov khoom loj, uas nyob rau hauv qab ntawm lub reactor tank thiab yuav siv tau rau yav tom ntej recycling. Cov dej phwj uas kho tau ntws los ntawm lub cuab yeej. Cov biogas generated thaum lub sij hawm degradation txheej txheem yog sau los ntawm lub sau cover thaum lub sij hawm tag nrho cov kev kho mob voj voog.
Muaj ntau ntau hom anaerobic sludge txaj reactors, suav nrog
Upflow Anaerobic Sludge Bed (UASB): In UASB treatment, wastewater is pumped into the bottom of the UASB bioreactor and applications upward flow. Thaum cov dej khib nyiab ntws los ntawm, qhov no ua rau cov sludge txheej ntab.
Expanded granular sludge beds (EGSBs): EGSBs are very similar to UASB technology. Qhov tseem ceeb sib txawv yog tias cov dej khib nyiab tau rov ua dua los ntawm qhov system los txhawb kev sib cuag nrog cov sludge. Lawv kuj feem ntau siab dua UASB, thiab cov dej ntws txuas ntxiv ntawm qhov nrawm dua. Yog li, piv nrog UASB system, EGSB tuaj yeem tswj cov kwj deg nrog cov ntsiab lus siab dua.
Anaerobic Baffle Reactor (ABR): Lub ABR yog tsim los ntawm ib nrab-cuam tshuam compartments sib cais los ntawm alternating baffles. Lub baffle cuam tshuam cov dej ntws zoo ntawm cov dej khib nyiab thiab txhawb kev sib cuag nrog cov sludge txheej thaum cov sludge ntws los ntawm lub reactor inlet mus rau qhov hluav taws xob.
Anaerobic pom reactor
Lub anaerobic filtration reactor muaj lub reactor tank nruab nrog ib qho nruab nrab lim nruab nrab. Cov kab mob anaerobic tau tso cai los tsim lawv tus kheej ntawm cov xov xwm lim dej, tsim cov ntawv hu ua biofilms. Lim xov xwm txawv ntawm qhov system mus rau qhov system. Cov khoom siv feem ntau suav nrog cov yeeb yaj kiab yas thiab cov khoom, nrog rau cov pob zeb, pumice, cib, thiab lwm yam ntaub ntawv. Cov xov xwm lim tshiab yuav tsum tau inoculated nrog cov kab mob anaerobic, thiab nws yuav siv sij hawm ob peb lub hlis rau biofilm los txhim kho mus txog qhov uas nws tuaj yeem ua tiav ntawm lub peev xwm.
Thaum lub sij hawm kho, cov dej khib nyiab dhau los ntawm qhov nruab nrab lim, uas yog siv los ntes cov khoom hauv cov kwj deg thaum tseem muab thaj chaw txaus kom nthuav tawm cov kab mob anaerobic hauv biofilm rau cov khoom siv organic tam sim no hauv cov kwj deg. Sij hawm dhau mus, qhov kev ua tau zoo ntawm lub tshuab lim dej yuav tsum tau ua tib zoo saib xyuas, vim tias cov khoom lim dej yuav dhau los ua qhov txhaws los ntawm cov khoom siv biofilm ntau dhau thiab cov khoom sib xyaw ua ke, thiab kev saib xyuas cov kauj ruam xws li rov qab ntxuav thiab ntxuav kom zoo.