Yuav ua li cas cog thiab ua kom zoo Biofilms?
Cov txheej txheem ntawm kev txuas cov metabolically nquag microbial sludge mus rau cov khoom siv hauv cov khoom siv tshuaj lom neeg yog hu uabiofilm
tsim(los yog "biofilm seeding"). Cov txheej txheem no suav nrog ob qho tib sikev cog qoob loothiabacclimationntawm biofilm-raws li sludge.
Thaum lub sij hawm pib biofilm tsim nyob rau hauv ib tug kab mob zaj duab xis kev kho mob, ob lub hom phiaj tseem ceeb yuav tsum ua kom tiav:
- Kev loj hlob ntawm microbial & kev loj hlob- Xyuas kom cov kab mob colonize lub filler nto kom txog rau thaum ib tug txaus biofilm txheej tsim kom tau raws li qhov yuav tsum tau kho cov dej khib nyiab.
- Acclimation rau Wastewater Quality- Maj mam hloov cov kab mob mus rau cov yam ntxwv tshwj xeeb ntawm cov dej khib nyiab (piv txwv li, organic load, toxicity).
Cov txheej txheem ntawm Biofilm tsim
Ob txoj hauv kev tseem ceeb yog siv:
1.Direct Biofilm Seeding
- Cov Txheej Txheem Siv Tau: Bio-hu rau oxidation tso tsheb hlau luam & ntauwd biofilters (vim aeration thiab siab porosity muab tub lim).
- Txheej txheem:
-Ua haujlwm tsis tu ncua nyob rau hauv cov xwm txheej zoo (DO, pH, BOD₅, C / N piv, kub).
- Haum rauCov dej phwj tuaj hauv tsev, cov dej khib nyiab hauv nroog, lossis cov dej khib nyiab muaj sib xyaw nrog cov dej phwj hauv tsev.
-Lub sijhawm: Feem ntau7-10 hnubua kom tiav biofilm tsim.
2.Indirect (Stepwise) Biofilm Seeding
- Siv tau Systems: Pa biofilters & rotating biological contactors (RBCs), tshwj xeeb tshaj yog raunyuaj-kom-degrade industrial wastewater.
- Txheej txheem:
-Pre- kab lis kev cai thiab acclimate activated sludge cais.
- Sib tov cov sludge nrog cov dej khib nyiab hauv lub tank recirculation.
-Qhia qhov sib tov rau hauv biofilm system thaum rov ua dua cov dej ntws thiab cov sludge.
- Maj mam nce cov dej khib nyiab hauv kev lag luam (pib ntawm 20%) kom txog thaum muaj zog tag nrho.
Kev txiav txim siab tseem ceeb rau kev cog qoob loo Biofilm
- Nutrient Balance: Tswj kom txaus N & P (COD:N:P ≈100:5:1).
- Uniform Water & Air Distribution: Tseem ceeb los tiv thaiv clogging thiab xyuas kom meej txawm tias biofilm loj hlob.
- Tsis tu ncua:
-Thiab cov nozzles/piping.
-Ua kom zoo dua reflux flow.
-Txuag cov sludge deposition.
Ua rau & Kev daws teeb meem rau Kev Loj Hlob Biofilm Detachment
Thaum lub caij cog qoob loo
- Ib txwm: Cov biofilms tshiab yog qhov tsis yooj yim, tshwj xeeb nrog cov dej khib nyiab.
- Kev daws: Ua siab ntev nrog acclimation; kho loading maj mam.
Thaum lub sijhawm ua haujlwm li qub
- Ua rau txawv txav:
-Thiab nce hauvtshuaj toxic/inhibitory.
-pH poob siab lossis kub hloov pauv.
- Kev daws teeb meem:
-Txhim kho qhov muaj txiaj ntsig zoo.
-Ua kom muaj zog pretreatment (piv txwv li, roj / khoom tshem tawm).
-Ua kom zoo dua aeration thiab hydraulic ntws.