Nyob rau hauv qhov kev siv ntawm MBBR txheej txheem tej yaam num, nws yog feem ntau hnov hais tias muaj ntau tus phooj ywg uas nyuam qhuav sim cov txheej txheem hais tias nws yog ib qho nyuaj rau dai cov zaj duab xis muab tub lim, tsis tuaj yeem dai zaj duab xis, thiab lwm yam. Muaj qhov sib txawv tseem ceeb ntawm MBBR cov khoom siv roj ntsha thiab feem ntau siv cov ntaub qhwv lub txaj, thiab muaj ntau yam uas cuam tshuam seb lawv puas tuaj yeem tsim cov membranes sai thiab zoo. Piv txwv li, qhov zoo ntawm cov muab tub lim, pH tus nqi, qhov kub thiab txias, thiab aeration tus nqi tuaj yeem cuam tshuam rau kev ceev thiab kev ua tau zoo ntawm daim nyias nyias.
MBBRkev tso kawm theem
Thaum ntxiv cov fillers, saib seb puas muaj qhov tshwm sim ntawm qhov tshwm sim. Thaum tsub zuj zuj tshwm sim, nres ntxiv. Txuas ntxiv saib rau hnub tom ntej ua ntej ntxiv. 2.Thaum ntxiv cov fillers, sib nrug aeration yog siv, nrog nruam aeration thaum hmo ntuj, tab sis tus nqi ntawm aeration yuav tsum tau txo.
Tom qab khiav rau 24 teev, tsis tu ncua qhia dej rau 2-3 teev, thiab tom qab ntawd txuas ntxiv cov aeration saum toj no. Tom qab ua haujlwm rau 48 teev, saib cov yeeb yaj kiab tsim ntawm cov ntim thiab ua kom cov dej ntws mus ntxiv kom ntev lub sijhawm dej ntws. Tshawb xyuas cov txheej txheem oxygen yaj hauv lub tank, zoo dua khaws cia nyob ib ncig ntawm 1.5-2.0mg/L. Tom qab 72 teev ntawm kev ua haujlwm, hu rau cov dej nkag thiab maj mam nce mus rau qhov tsim nyog. Raws li kev soj ntsuam niaj hnub ntawm cov dej zoo ntawm qhov nkag thiab qhov hluav taws xob, nws yuav tsum ua kom tau raws li cov qauv tsim dej zoo hauv li 7 hnub.
Cultivation theem ntawm biofilm
Kev cog qoob loo ntawm biofilms hais txog kev siv qee txoj hauv kev los tsim thiab sib sau ib qho ntawm cov kab mob hauv kev kho mob, thiab ua kom tiav qee qhov tuab ntawm biofilm ntawm cov khoom ntim. Txoj kev cog qoob loo feem ntau suav nrog kev cog qoob loo zoo li qub thiab kev cog qoob loo dynamic.
Kev cog qoob loo zoo li qub
Lub npe hu ua static cultivation yog los tiv thaiv cov kab mob tshiab tsim los ntawm ntws tawm nrog dej, muab sijhawm sib cuag ntau npaum li cas ntawm cov kab mob thiab cov txheej txheem ntim ntau npaum li sai tau, thiab ua kom cov txheej txheem biofilm. Nyob rau theem pib, txhawm rau kom tsis txhob muaj cov khoom noj ntawm cov dej khib nyiab, BOD5 yog siv ib hnub ib zaug; N: Ntxiv cov khoom noj khoom haus xws li urea, diamine, thiab qab zib dawb hauv qhov piv ntawm 00: 5: 1. Ua ntej, txhaj cov inoculated sludge (10% biochemical zoo ntim) thiab cov twj tso kua dej pov tseg rau hauv lub tank biochemical, thiab tom qab ntawd pib aeration cultivation. Lub ntim ntim ntawm cov khoom ntim rau hauv lub tank biochemical yuav tsum yog 35% mus rau 40% ntawm cov ntim zoo ntawm cov tshuaj tiv thaiv tank. Cia nws sawv ntsug rau 4-5 teev yam tsis muaj aeration, tso cai rau cov kab mob ruaj khov rau inoculate mus rau lub ntim, tom qab ntawd aerate rau 1 teev, cia nws sawv ntsug rau 2 teev, aerate rau 1 teev, rov ua cov txheej txheem. Tom qab 4-5 hnub, qhov saum npoo ntawm cov ntim tau npog tag nrho nrog biofilm, thiab nyob rau hnub 6, cov dej tsis tu ncua pib pib.
Kev cog qoob loo dynamic
Tom qab 6 hnub ntawm kev cog qoob loo, ib txheej nyias ntawm cov xim daj xim av tau loj hlob ntawm qhov chaw ntawm cov khoom ntim. Yog li ntawd, cov dej tsis tu ncua yog siv rau kev cog qoob loo, thiab cov dej ntws tau hloov kho kom tswj tau cov pa oxygen ntawm 2-4mg / L ( ntsuas los ntawm lub ntsuas pa oxygen). Tom qab li ntawm 15 hnub, muaj qee cov kab mob amoebas thiab cov kab roaming (saib hauv qab lub tshuab kuaj kab mob lom) ntawm cov khoom ntim, uas hnov ntxhiab thiab nplua thaum kov los ntawm tes. Tom qab 20 hnub, protozoa xws li flagellates, tswb worms, thiab cov kab mob dawb ntawm paramecium tshwm sim. Tom qab 20 hnub ntawm kev cog qoob loo, cov tsos ntawm post protozoa xws li rotifers thiab nematodes qhia tias biofilm tau loj hlob. Kev lag luam tsis tu ncua tuaj yeem pib.
Lub domestication theem ntawm biofilm
Lub hom phiaj ntawm domestication yog xaiv cov kab mob uas tsim nyog rau qhov teeb meem dej zoo, tshem tawm cov kab mob tsis zoo, thiab rau kev kho cov txheej txheem nrog denitrification thiab phosphorus tshem tawm cov haujlwm, domestication tuaj yeem ua rau cov kab mob nitrifying, denitrifying kab mob, thiab phosphorus accumulating cov kab mob cov kab mob tseem ceeb. . Txoj hauv kev tshwj xeeb yog ua ntej tswj cov kev ua haujlwm ib txwm ua ntawm cov txheej txheem, thiab tom qab ntawd nruj me ntsis tswj cov txheej txheem tswj tsis tau. Qhov nruab nrab yaj oxygen (DO) yuav tsum tswj ntawm {{0}}mg / l, thiab lub sij hawm aeration ntawm lub tank aerobic yuav tsum tsis pub tsawg tshaj 5 teev. Thaum lub sijhawm ua haujlwm no, ntau qhov ntsuas dej zoo thiab ntsuas ntsuas yuav tsum ntsuas txhua hnub. Thaum qhov nruab nrab tuab ntawm biofilm yog nyob ib ncig ntawm 0.2-0.5mm, biofilm cultivation tau ua tiav kom txog thaum cov dej ntws tawm BOD5, SS, CODCr thiab lwm yam ntsuas raws li cov qauv tsim.
MBBR Biological Filler Xaiv
1. Khoom siv
Cov txheej txheem MBBR yog cov txheej txheem tshiab uas yuav tsum tau ntxiv ib zaug yam tsis tas yuav hloov cov khoom siv roj ntsha, yog li cov khoom yuav tsum muaj siab heev. Feem ntau, cov khoom siv high-purity HDPE raug xaiv rau cov khoom siv roj ntsha nrog lub neej ntev tshaj 15 xyoos. Yog tias siv cov ntaub ntawv tsis zoo, nws yog ib qho yooj yim uas yuav ua rau cov khoom siv roj ntsha tawg thiab thaiv cov kav dej tom qab siv engineering.
2. Cov txheej txheem ntau lawm
Biological fillers yog tsim los nrog cov qauv geometric los ntawm cov tshuab ua kua, feem ntau cylindrical thiab ntxeem tau. Nyob rau hauv kev tsim engineering, cov txheej txheem kev tsim khoom siv tshuab rau cov chaw tsim khoom yog siab heev, los ntawm kev txhim kho pwm mus rau kev tsim cov cav tov thiab kub thiab ceev hloov thaum lub sij hawm tsim khoom. Piv txwv li, qee cov khoom siv roj ntsha nrog cov phab ntsa tsis sib xws yog qhov ua rau tsis muaj zog txaus.
3. Cov cheeb tsam tshwj xeeb
Qhov tshwj xeeb ntawm thaj chaw ntawm cov khoom siv roj ntsha ncaj qha cuam tshuam rau tus naj npawb ntawm cov kab mob cultivated per cubic meter ntawm dej, thiab ntau cov kab mob cultivated, lub zog kho dej phwj muaj peev xwm. Txawm li cas los xij, hauv kev xaiv tiag tiag ntawm cov fillers, nws tsis yog tsuas yog yuav tsum tau xav txog qhov tshwj xeeb ntawm thaj chaw ntawm cov khoom siv roj ntsha, tab sis kuj muaj txoj kab uas hla thiab qhov pore loj ntawm cov fillers. Txoj kab uas hla ntawm lub muab tub lim yog cuam tshuam nrog lub aperture ntawm lub interception net. Qhov pore loj ntawm cov muab tub lim tsis tsuas yog cuam tshuam rau thaj chaw tshwj xeeb, tab sis kuj cuam tshuam rau seb cov aging biofilm yog ib qho yooj yim kom poob. Tam sim no, qee qhov MBBR bio fillers ntawm kev ua lag luam muaj thaj chaw loj tshwj xeeb tab sis me me pores. Thawj daim nyias nyias dai thiab cov teebmeem tom qab kho tau zoo, tab sis tom qab ib lossis ob xyoos ntawm kev ua haujlwm tiag tiag, cov laus biofilm tsis tuaj yeem poob, ua rau cov dej tsis zoo nyob rau theem tom ntej.