Nkag siab txog cov microorganisms hauv peb qhov chaw ib nrab yog ib nrab rau txoj kev vam meej hauv koj cov txheej txheem pov tseg kom tau txais!
Nyob rau hauv lub microschopic ntiaj teb ntawm kev kho dej kom muaj dej lwg, cov kab mob me me zoo li lub ntsej muag zoo li no "}} Niaj hnub no, peb mam li tham txog cov microorganisms hauv Anaerobic, anoxic, thiab aerobic ib puag ncig.
I. Ib puag ncig txiav txim siab txoj hmoo: kev sib piv ntawm cov yam ntxwv ntawm peb qhov chaw loj
Yaj oxygen (ua) qhov tseem ceeb taw tes
Anaerobic ib puag ncig: ua <0.2 mg / l
Anoxic ib puag ncig: ua=0.2-0.5 mg / l
Aerobic ib puag ncig: ua> 2.0 mg / l
Oxidation -} txo cov peev txheej (orp) watershed
Anaerobic ib puag ncig: Orp <-100 MV
Anoxic ib puag ncig: OP=-100 rau -50 MV
Aerobic ib puag ncig: Orp> +50 mv
Ii. Aerobic ib puag ncig: ib lub microbial "zoo Hoobkas"
Lub zog loj: aerobic kab mob
Cov Sawv Cev Sawv Cev Tsiaj Ntawv:
Zoooglia: tus "caj qaum nraub qaum" ntawm kev ua haujlwm sludge
PSETUDOMONAS: Cov kws tshaj lij hauv cov teeb meem organic teeb meem
Nitrifify cov kab mob: cov kws tshaj lij hauv ammonia nitrogen oxidation
Hom hauj lwm: Aerobic ua pa
Zog ntau lawm:
Organic teeb meem + o₂ → → →-+ h₂o + ntau ntawm lub zog
Nta:
Ceev metabolic tus nqi thiab kev ua haujlwm siab
Huv si, tsis muaj ntxhiab
Yuav tsum tau txais cov khoom siv oxygen
Cov me me cim npe
Compact floccules
Nquag bellworms thiab isobranched cab
Sludge yog daj - xim av
III. Anoxic ib puag ncig: microbial "kev hloov pauv"
Cov rog tshwj xeeb: cov kab mob kws tshaj lij
Cov Tswv Cuab Tseem Ceeb:
Denitrified Cov Kab Mob: Nitrate "Converters"
Qee Yam Bacillus: Cov kws paub txog ib puag ncig kev yoog
Ua Haujlwm Hom: Anaerobic Ua Khaub Ncaws
Yam khoom siv hluav taws xob:
Organic Matic + Nou → → → + Lub Zog
Kev Qhia Cov Ntsiab Lus Tseem Ceeb:
Siv nitrate los hloov oxygen
Ua kom tiav qhov tseem ceeb Denitrification Kauj Ruam
Yuav tsum muaj cov pa roj carbon txaus
Kev tswj hwm kev tswj hwm cov ntsiab lus: nruj tswj tau ntawm 0.2-0.5 mg / l
Xyuas kom muaj peev xwm nitrate
Tswj cov pa roj carbon - nitrogen ratio (feem ntau 4-6: 1)
IV. Anaerobic ib puag ncig: lub microbial "hloov kho"
Pab Pawg Kws Tshaj Lij: Anaerobic Bacteria
Peb txhais tau tias "cov kab ntau lawm":
Hydrolytic thiab acidifying bacteria
Kev rhuav tshem ntawm macromolecules rau hauv cov lwg me me
Xws li, kab mob cellulolytic
Hydrogen -} kev ua thiab acetogenic kab mob
Txuas ntxiv kev ua qauv me me
Xws li, syntrophomonas
Methanogens
Thaum kawg, methane yog tsim
piv txwv li, Methanosarcina
Zog Zog Generation Hom: Fermentation
Ntau - theem siab hloov dua siab tshiab:
Complex organic teeb meem → Yooj yim cov organic teeb → ch₄ +-zog + zog
Cov yam ntxwv:
Kev Tawm Zog Tsawg
Tsim cov roj cua sib txuas
Yuav tsum tau siv txoj kev mob anaerobic
Cov txheej txheem tseem ceeb
Tsis muaj Ahaerobic ib puag ncig (OP <-300 MV)
Haum kub (35-37℃ntawm Mesoporous Kub)
Tsim nyog phua (6.5-7.5)
V. Synergy nyob rau hauv cov txheej txheem
Kev sib koom tes zoo hauv ANOO cov txheej txheem
Phosphorus release in the anaerobic stage -->Nitrogen tshem tawm nyob rau hauv anoxic theem
->Nitrricification thiab phosphorus nqus dej hauv lub aerobic theem
Microbial "hla lub pas nrig" hauv txhua theem
Anaerobic theem: phosphate - actulating cov kab mob tso tawm tshuaj phosphate, ua <0.2 mg / l
Anoxic theem: Denitritify bacteria Tshem tawm nitrate, ua=0.2-0.5 mg / l
Aerobic theem: nitrifify thiab phosphate - actulating cov kab mob ua haujlwm ua ke, ua=2-4 mg / l
VI. Microbial "lus ceeb toom" ntawm kev txawv txav
Aerobic system txawv txav
Cov tsos mob:
Kev loj hlob ntau dhau ntawm filamentous kab mob
Sludge bulking
Turboid effluent
Countermeasures:
Kho kom haum rau 2-4 mg / l
Tswj Organic load
Txhim kho sludge hnub nyoog (5-15 hnub)
Anaerobic system txawv txav
Cov tsos mob:
Volatile acid accumulation (>500 mg / l)
Sai sai p poob (<6.2)
Txo qis cov roj
Countermeasures:
Kho cov dej nkag
Ntxiv Alkalinity (Tswj PH 6.5-7.5)
Tswj kub (35 ± 2 degree)
VII. Cov lus qhia ua rau cov lus qhia rau kev ua kom muaj qhov chaw microbial
Txhim kho cov Aerobic ib puag ncig
Tswj hwm ua ntawm 2-4 mg / l
Ua kom lub sijhawm ua haujlwm tsim nyog (4-8 teev)
Kev tswj hwm qhov tsim nyog sludge concentration (2000-4000 mg / l)
Kev tswj hwm ib puag ncig anoxic
Nruj me ntsis tiv thaiv cov pa roj oxygen (ua rau <0.5 mg / l)
Ua kom muaj cov pa roj khov txaus (C / N=4-6)
Txhim Kho Reflux Ratio (100-200%)
Tswjhwm thaj chaw anaerobic
Nruj kev ntsuas kev ntsuas (om <-300 MV)
Ruaj khov tswj (35 ± 1 degree)
Maj mam nce lub nra (0.5-1.5 kg Bod / MLS.CEL.
VIII. Kev Ntsuas Hluav Taws Xob Motiam Empicination Siv Tswv Yim
Aerobic activ activ activ activ activ່ນ sludge
Cov Cim Npe Noj Qab Haus Huv: Cov Khoom Siv Hluav Taws Kub, Qiv Floccules
Cov cim tsis meej: ntau cov filamentous fungi, tsis muaj protozoa
Anaerobic Granular Sludge
Cov yam ntxwv zoo: Cov granules tag nrho, nrog thaj tsam ntshiab (1-3mm)
Cov tsos mob tshwm sim: tawg cov lus, Turboid supernatant
Ntsiab lus: Cov ntsiab lus tseem ceeb ntawm kev tswj hwm microbial
Ib puag ncig ua ntej: tswj hwm nruj me ntsis xws li ua thiab orp
Syrerge li Prohanancement: Qib nyem lub synergistic cuam tshuam ntawm ntau cov kab mob me
Maj mam nce zuj zus: microbial cultivation yuav tsum ua siab ntev (15-30 hnub)
Kev tswj kom meej: kho cov txheej txheem tsis raws li Microbial Performance
Kev tiv thaiv ua ntej: Tsim cov kev saib xyuas zoo thiab ceeb toom thaum ntxov
Cov kab mob me yog peb cov neeg ua haujlwm tshaj plaws "." Nkag siab txog lawv tus cwj pwm thiab cov kev xav tau yog qhov tseem ceeb rau kev ua haujlwm ntawm kev kho kom muaj dej ntau! Los ntawm kev tswj hwm cov kev tswj hwm lub anaerobic, anoxic, thiab aerobic ib puag ncig, peb tuaj yeem ua kom tiav unleash lub peev xwm ntawm cov kab mob me me.
