1. Filling Media (Filling Media Phase)
(1) Thaum lub sij hawm sau xov xwm, saib seb puas muaj tshwm sim. Yog tias pom muaj kev sib sau ua ke, tsis txhob sau thiab rov pib dua rau hnub tom qab tom qab kev soj ntsuam ntxiv.
(2) Thaum lub sij hawm sau xov xwm, kev sib tshuam aeration yuav tsum tau txais yuav. Nruam aeration tuaj yeem khaws cia thaum hmo ntuj, tab sis tus nqi aeration yuav tsum tau txo.
(3) Tom qab 24 teev ntawm kev ua haujlwm, qhia cov dej ntws tsis tu ncua rau 2-3 teev, tom qab ntawd rov pib lub aeration tau hais tseg. Tom qab 48 teev ntawm kev ua haujlwm, saib xyuas cov txheej txheem biofilm ntawm kev tshaj tawm. Ua kom tus nqi nkag thiab txuas ntxiv lub sijhawm nkag mus, thaum saib xyuas cov qib oxygen yaj (DO) hauv lub tank, uas yuav tsum tau khaws cia ntawm 1.5-2.0 mg / L. Tom qab 72 teev ntawm kev ua haujlwm, pib ua haujlwm tsis tu ncua thiab maj mam nce mus rau qib tsim. Saib xyuas (paub) cov ntsuas dej muaj txiaj ntsig thiab muaj txiaj ntsig zoo. Nws cia siab tias cov qauv tsim dej yuav tsum tau ua kom tiav li ntawm 7 hnub.
2. Kev cog qoob loo Biofilm
Kev cog qoob loo Biofilm hais txog cov txheej txheem ntawm kev txhawb nqa kev loj hlob thiab tsub zuj zuj ntawm cov kab mob hauv cov kab mob hauv kev kho mob kom ua tiav qee qhov tuab ntawm biofilm ntawm kev tshaj tawm. Cov txheej txheem tseem ceeb suav nrog kev cog qoob loo zoo li qub thiab kev cog qoob loo dynamic.
(1) Kev cog qoob loo zoo li qub
Kev cog qoob loo zoo li lub hom phiaj los tiv thaiv cov kab mob tshiab tsim los ntawm kev ntxuav tawm los ntawm cov dej ntws, yog li ua kom lub sijhawm sib cuag ntawm cov kab mob thiab cov txheej txheem tshaj tawm. Txhawm rau txhawm rau tsim biofilm, thaum lub sijhawm pib, cov khoom noj xws li urea, diammonium phosphate, thiab 白糖 (qab zib) tau ntxiv ib zaug ib hnub ntawm qhov sib piv ntawm C: N: P=100: 5: 1 kom tsis txhob muaj cov as-ham hauv cov dej khib nyiab.
Ua ntej, inoculate sludge (10% ntawm qhov zoo biochemical ntim) thiab cov dej khib nyiab tau muab tso rau hauv lub tank biochemical, tom qab ntawd pib ntawm kev cog qoob loo aeration. Lub ntim ntim ntawm cov xov xwm hauv lub tank biochemical yuav tsum suav txog 35% -40% ntawm cov khoom ntim zoo. Cia lub kaw lus sawv ntsug yam tsis muaj aeration rau 4-5 teev los pab txhawb kev txuas ntawm cov kab mob ruaj khov rau hauv xov xwm. Tom qab ntawd, aerate rau 1 teev, tom qab ntawd los ntawm lwm 2 teev sawv ntsug, thiab tom qab ntawd aerate rau 1 teev. Rov ua qhov haujlwm no. Tom qab 4-5 hnub, cov xov xwm saum npoo yuav tsum tau npog tag nrho nrog biofilm. Hnub 6, pib tsis tu ncua qis -flow influent introduction.
(2) Dynamic Cultivation
Tom qab 6 hnub ntawm kev cog qoob loo aeration, ib txheej nyias nyias ntawm cov xim daj - xim av biofilm yuav tau tsim rau ntawm qhov chaw tshaj tawm. Hloov mus tas li inflow rau dynamic cultivation. Kho tus nqi nkag thiab tswj cov qib oxygen yaj (DO) ntawm 2-4 mg / L ( ntsuas siv lub ntsuas pa oxygen). Tom qab kwv yees li 15 hnub, protozoa xws li amoebas thiab Litonotus (saib hauv lub tshuab kuaj kab mob lom) yuav tshwm sim hauv xov xwm. Cov xov xwm yuav hnov ntxhiab thiab nplua rau qhov kov. Tom qab 20 hnub, flagellates, Vorticella, Paramecium, thiab cov kab mob dawb yuav tshwm sim. Tom qab lwm 20 hnub ntawm kev cog qoob loo, metazoans xws li rotifers thiab nematodes yuav tshwm sim, qhia tias biofilm tau tsim tag nrho. Tom qab ntawd kev lag luam txuas ntxiv tuaj yeem pib.
3. Biofilm Acclimation Phase
Lub hom phiaj ntawm acclimation yog xaiv cov kab mob uas yoog raws cov dej zoo tiag tiag thiab tshem tawm cov kab mob uas tsis muaj txiaj ntsig zoo. Rau cov txheej txheem kev kho mob nrog nitrogen thiab phosphorus tshem tawm cov haujlwm, kev ua haujlwm kom ntseeg tau tias cov kab mob nitrifying, denitrifying kab mob, thiab polyphosphate- cov kab mob sib sau (PAOs) dhau los ua cov zej zog tseem ceeb microbial.
Txoj hauv kev tshwj xeeb yog tswj hwm kev ua haujlwm ib txwm ua ntawm cov txheej txheem thaum tswj cov txheej txheem nruj. Qhov nruab nrab yaj oxygen (DO) yuav tsum tau khaws cia ntawm 2-3 mg / L, thiab lub sij hawm aeration hauv lub tank aerobic yuav tsum tsis pub tsawg tshaj 5 teev. Thaum lub sijhawm ua haujlwm no, kev ntsuas txhua hnub ntawm ntau qhov ntsuas dej zoo thiab cov ntsuas ntsuas yuav tsum tau ua. Thaum qhov nruab nrab biofilm thickness nce mus txog kwv yees li 0.2-0.5 hli, qhov kev cog qoob loo biofilm tau pom zoo. Cov txheej txheem txuas ntxiv mus kom txog thaum cov ntsuas dej ntws tawm xws li BOD₅, SS, thiab COD₆ᵣ ua tau raws li cov qauv tsim.