Thaum twg koj ua haujlwm hauv kev lag luam dej phwj tuaj rau ib lub sijhawm, koj yuav hnov ntau zaus ob lub npe: MBR thiab MBBR.
Ntau tus neeg tuaj tshiab yuav xav tias tsis meej pem: lub npe tsuas yog ib tsab ntawv xwb, uas zoo li "kev ua haujlwm siab", tab sis qhov tseeb, qhov txawv yog dab tsi? Kuv thawj zaug tau ntsib nrog MBBR hauv 2016, thaum kuv xav tias nws tsuas yog hloov kho dua tshiab ntawm MBR.
Qee qhov haujlwm tam sim no siv MBR, thaum lwm tus siv MBBR.
Qee zaum koj tuaj yeem pom ob txoj kev tshwm sim ua ke.
Yog tias koj tsuas saib lub npe, nws yooj yim heev kom tsis meej pem.
Qhov tseeb, ob txoj kev no muaj ntau txoj hauv kev los daws cov teeb meem. Kev nkag siab yooj yim:
MBR siv cov membranes rau kev pom.
MBBR yog muab "qhov chaw nyob" rau cov kab mob.
Ib qho ntxiv dag zog av nkos sib cais,
Ib qho kev kho mob zoo dua qub.
Niaj hnub no, cia peb piav qhia txog cov laj thawj, qhov zoo thiab qhov tsis zoo, thiab siv cov xwm txheej ntawm ob txheej txheem no hauv ib tsab xov xwm.
1, Ua ntej, cia peb nkag siab ib lo lus nug: Dab tsi yog qhov kev kho dej phwj tuaj
Kev kho dej phwj feem ntau yeej tseem ceeb ua ob yam:
Kauj Ruam 1: Siv cov kab mob me me los haus cov pa phem
Kauj Ruam 2: cais cov kab mob ntawm cov dej
Thawj kauj ruam yog hu ua kev kho mob lom
Qhov thib ob yog hu ua av nkos sib cais
Cov txheej txheem ntawm cov txheej txheem activated sludge yog qhov yooj yim heev:
Aeration tank → Secondary sedimentation tank
Microbial degradation ntawm cov pa phem nyob rau hauv aeration tank
Secondary sedimentation tank cais sludge thiab dej los ntawm sedimentation
MBR thiab MBBR muaj zog tiag tiag hauv ob qho no.
2, MBR: Hloov cov dej xaum theem nrab nrog cov membranes
Lub npe tag nrho ntawm MBR yog Membrane Bioreactor.
Qhov kev hloov loj tshaj plaws hauv cov txheej txheem no tsuas yog ib qho:
Hloov lub semi-sedimentation tank nrog membrane filtration.
Koj tuaj yeem xav txog qhov xwm txheej:
Cov khoom siv tes ua ib txwm zoo li siv lub tank sedimentation los 'tos av nkos'.
MBR zoo li muab lub lim dej zoo heev.
Qhov pore loj ntawm daim nyias nyias feem ntau tsuas yog 0.01 ~ 0.4 microns, me dua li cov kab mob.
Qhov tshwm sim yog:
Cov sludge yog kiag li intercepted
Suspended solids yuav luag xoom
Cov kua dej yog qhov tseeb heev
Ntau MBR effluent tuaj yeem siv ncaj qha rau cov dej rov qab siv dua.
Muaj qhov pom tseeb heev ntawm MBR runtime
Cov sludge concentration yog tshwj xeeb yog siab.
Ordinary activated sludge: MLSS kwv yees li 2000-4000 mg / L
MBR system: MLSS feem ntau yog li ntawm 6000 txog 12000 mg / L
Qhov ntau microorganisms muaj, qhov siab dua cov tshuaj tiv thaiv ib txwm ua.
Qhov no kuj yog ib qho laj thawj tseem ceeb vim li cas MBR tank peev xwm tuaj yeem ua kom me me.
Qhov zoo ntawm MBR
Lub effluent quality yog zoo heev
Suspended solids mus txog 0
Tsawg heev turbidity
ruaj khov mus txog qib A lossis cov qauv siab dua
compact hneev taw
Tsis muaj lwm yam sedimentation tank
Lub pas dej ua ke tuaj yeem ua tau ntau dua
System stability
Membrane ncaj qha cuam tshuam sludge
Yuav tsis muaj teeb meem ntawm sludge poob
Zoo denitrification nyhuv
Vim tias nws tuaj yeem tuav lub hnub nyoog sludge ntev
Nitrifying kab mob tuaj yeem loj hlob tag nrho
Qhov teeb meem nrog MBR kuj tseem siv tau heev
Hauv kev ua haujlwm tiag tiag, qhov kev sib tw loj tshaj ntawm MBR tsuas yog peb lo lus:
membrane fouling
Lub membrane tuaj yeem ua paug thiab thaiv tom qab siv ntev, ua rau:
Txo cov dej tawm
Nce suction siab
kev siv zog nce ntxiv
Yog li MBR systems yuav tsum:
gas ntxhua
rov qab ntxuav
tshuaj ntxuav
Daim nyias nyias tsis yog ib qho cuab yeej ruaj khov thiab feem ntau yuav tsum tau hloov txhua 3-5 xyoos.
Lwm qhov teeb meem yog:
Tsawg zog noj
Membrane scrubbing yuav tsum muaj ntau qhov aeration
Extracting dej yuav tsum muaj zog
3, MBBR: Ua kom 'qhov chaw nyob' rau cov kab mob
Lub npe tag nrho ntawm MBBR yog Moving Bed Biofilm Reactor.
Lub tswv yim txheej txheem no txawv kiag li.
Nws tsis hloov txoj kev sib cais av thiab dej, tab sis ua lwm yam:
Nce tus naj npawb ntawm cov kab mob hauv lub cev.
Txoj kev yog yooj yim:
Ntxiv ib qho loj ntawm cov khoom ntim tawm mus rau lub tank aeration. These fillers are usually plastic structures with a density close to water, and will constantly roll and move under aeration. Txhua qhov chaw ntawm qhov muab tub lim yuav npog nrog cov kab mob.
Koj tuaj yeem nkag siab nws li no
Cov txheej txheem activated sludge
Microorganisms raug tshem tawm hauv dej.
MBBR system
Microorganisms muaj ob ntu:
Ib feem ntawm suspended sludge
Ib feem ntawm nws adheres rau cov khoom ntim
Ib txhij muaj nyob rau hauv lub system: activated sludge + biofilm
Tag nrho cov kab mob microorganisms yuav loj tuaj.
Vim li cas MBBR muaj qhov cuam tshuam tsis zoo
Qhov laj thawj yog qhov yooj yim heev.
Suspended sludge yog nquag poob.
Tab sis cov biofilm uas txuas nrog lub muab tub lim yuav tsis yooj yim ntxuav.
Yog li thaum dej zoo hloov pauv:
Cov kab mob microorganisms ntawm cov khoom ntim tuaj yeem ua lub luag haujlwm hauv kev ruaj khov.
Ntau cov dej khib nyiab hauv kev lag luam nyiam siv MBBR, thiab yog vim li cas.
Qhov zoo ntawm MBBR
Muaj zog cuam tshuam
Biofilm tsis yooj yim ploj
Zoo system stability
Yooj yim hloov
Ntau qhov chaw kho dej qub qub tau kho dua tshiab thiab kho dua tshiab
Tsuas yog yuav tsum tau ntxiv cov khoom ntim rau hauv lub tank aeration
Tsis tas yuav tsim lub pas dej tshiab lub cev
Yooj yim rau kev khiav lag luam
Tsis muaj cov khoom siv membrane
Tsawg ua haujlwm nyuaj
Tsawg zog noj
Qhov kev siv aeration zoo ib yam li cov txheej txheem ib txwm muaj
Cov kev txwv ntawm MBBR
MBBR kuj muaj nws tus kheej ciam teb.
Qhov loj tshaj plaws yog tias muaj qhov txwv siab tshaj rau cov dej ntws zoo.
Vim tias qhov kawg kev sib cais ntawm cov av nkos thiab dej tseem vam khom rau lub tank thib ob.
Yog li:
Cov dej SS thiab turbidity feem ntau yog siab dua MBR.
Tsis tas li ntawd, ob qho teeb meem yuav tsum tau sau tseg thaum lub sijhawm ua haujlwm:
packing tsub zuj zuj
Tsis sib npaug aeration tuaj yeem ua rau muaj kev sib txuam hauv zos.
4, Yuav ua li cas xaiv MBR thiab MBBR?
Ntau tus neeg tawm tsam thaum tsim cov txheej txheem:
Kuv yuav tsum xaiv qhov twg?
Qhov tseeb, lub hauv paus tsuas yog yuav tsum tau saib peb cov lus nug.
1. Cov dej qhov hluav taws xob xav tau
Yog lub hom phiaj yog:
cov dej khib nyiab rov siv dua
Cov txheej txheem siab emissions
Txheej Txheem Dej Ntog
MBR zoo dua.
Vim tias daim nyias nyias muaj peev xwm yuav luag tag nrho tshem tawm cov khib nyiab.
2. Cov xwm txheej siv av
Yog hais tias qhov chaw yog nruj heev:
MBR muaj qhov pom tseeb zoo
Vim nws tshem tawm qhov xav tau rau lub tank thib ob sedimentation.
3. Kev nqis peev thiab kev ua haujlwm
Yog tias qhov project muab qhov tseem ceeb tshaj rau:
ruaj khov
nqi
Kev tswj yooj yim
MBBR feem ntau tsim nyog. Tshwj xeeb tshaj yog kev kho dua tshiab thiab nthuav dav ntawm cov chaw kho dej qub qub.
5, Ntau thiab ntau txoj haujlwm tau pib siv ua ke
Hauv qee qhov haujlwm, ob txoj haujlwm tau ua ke.
Piv txwv li: MBBR + MBR
Ntxiv cov khoom ntim rau hauv MBR biochemical tank.
Qhov no tuaj yeem nqa ob qho txiaj ntsig:
Siab biomass
Txo cov membrane fouling
Ntau qhov chaw kho dej phwj siab tau siv txoj hauv kev no.
6, Thaum kawg, cia kuv xaus lus
MBR thiab MBBR yeej sawv cev rau ob txoj kev txhawb nqa sib txawv.
MBR: Txhim kho av nkos sib cais
Cov khoom siv tseem ceeb yog daim nyias nyias
Lub hom phiaj yog kom ua tiav cov dej ntws zoo dua.
MBBR: Txhim kho kev kho mob lom neeg
Lub hauv paus yog suspended packing khoom
Lub hom phiaj yog ua kom biomass thiab system stability.
Kev nkag siab yooj yim:
MBR yog txheej txheem ntawm kev ntxiv "ultra-fine filter" rau dej.
MBBR tau tso ntau 'cov tsev microbial' rau hauv lub pas dej.
Kev nrhiav qhov zoo tshaj plaws.
Ib qho qhia txog kev ruaj ntseg thiab kev lag luam.