Kev kho kab mob microbial ntawm cov dej phwj yog muab cov kab mob microbial zoo hauv cov dej phwj tuaj, uas txhawb kev tsim kom muaj kev sib npaug ntawm cov dej hauv lub cev nws tus kheej, uas tsis yog tsuas yog decomposers, cov neeg tsim khoom, thiab cov neeg siv khoom. Cov pa phem tuaj yeem raug kho thiab siv tau zoo dua, thiab yog li ntau cov khoom noj khoom haus tuaj yeem tsim tau, ua kom muaj kev sib kis ntawm cov zaub mov hauv web ecosystem. Ib qho zoo thiab ruaj khov ecological tshuav nyiaj li cas tuaj yeem tsim tau yog tias qhov tsim nyog kom muaj nuj nqis thiab lub zog sib piv tau tswj hwm ntawm qib trophic. Thaum qee cov dej phwj nkag mus rau hauv lub ecosystem no, cov organic pollutants nyob rau hauv nws tsis tsuas yog degraded thiab purified los ntawm cov kab mob thiab fungi, tab sis cov khoom kawg ntawm lawv degradation, ib co inorganic tebchaw, yog siv raws li carbon qhov chaw, nitrogen qhov chaw thiab phosphorus. thiab hnub ci zog yog siv los ua qhov pib lub zog. , koom nrog cov txheej txheem metabolic hauv cov khoom noj hauv lub vev xaib, thiab maj mam txav mus los thiab hloov pauv los ntawm qib qis trophic mus rau qib siab trophic, thiab thaum kawg hloov mus rau hauv cov qoob loo hauv dej, ntses, cw, mussels, geese, ducks thiab lwm yam khoom siv hauv lub neej, thiab los ntawm tib neeg lub neej. nruam Siv thiab ntxiv cov kev ntsuas los tswj kom muaj kev sib npaug ntawm cov dej hauv lub cev, ua rau kom muaj kev zoo nkauj thiab qhov xwm txheej ntawm waterscape, thiab ua tiav lub hom phiaj ntawm kev tiv thaiv thiab tswj cov eutrophication ntawm lub cev dej.
1. Kev kho microbial ntawm cov dej phwj tuajFeem ntau tshem tawm cov kuab paug organic (BOD, COD cov khoom) hauv colloidal thiab yaj hauv lub xeev hauv cov dej phwj tuaj, thiab tus nqi tshem tawm tuaj yeem ncav cuag ntau dua 90%, yog li cov pa phem tuaj yeem ua tau raws li tus qauv tso tawm.
(1) BOD (biochemical oxygen xav tau), uas yog "biochemical oxygen xav tau" lossis "kev xav tau oxygen lom neeg", yog qhov qhia tsis ncaj ntawm cov ntsiab lus ntawm cov organic hauv dej. Nws feem ntau yog hais txog ib feem ntawm yooj yim oxidizable organic teeb meem uas muaj nyob rau hauv 1L ntawm cov dej phwj tuaj los yog cov qauv dej mus kuaj. Thaum cov kab mob oxidize thiab decompose nws, cov pa oxygen yaj hauv cov dej haus hauv milligrams (lub tsev yog mg / L). Cov kev ntsuas ntawm BOD feem ntau tau teev tseg ntawm 20 ° C rau 5 hnub thiab hmo ntuj, yog li lub cim BOD5 feem ntau siv.
(2) COD (tshuaj oxygen xav tau) yog tshuaj lom neeg oxygen xav tau, uas yog ib qho yooj yim indirect qhia ntawm cov ntsiab lus ntawm cov organic teeb meem nyob rau hauv lub cev dej. (unit yog mg/L). Feem ntau siv tshuaj oxidants yog K2Cr2O7 los yog KMnO4. Ntawm lawv, K2Cr2O7 feem ntau yog siv, thiab ntsuas COD yog sawv cev los ntawm "COD Cr".
2. Kev kho kab mob microbial dej phwj tuaj yeem muab faib ua aerobic kev kho mob thiab kev kho anaerobic raws li lub xeev ntawm cov pa oxygen hauv cov txheej txheem kho.
1. Kev kho mob aerobic
Nyob rau hauv aerobic tej yam kev mob, microorganisms adsorb organic teeb meem nyob rau hauv ib puag ncig, oxidize thiab decompose nws mus rau hauv inorganic teeb meem, purify dej phwj, thiab synthesize cellular teeb meem tib lub sij hawm. Nyob rau hauv tus txheej txheem ntawm dej purification, cov kab mob muaj nyob rau hauv daim ntawv ntawm activated sludge thiab lub ntsiab Cheebtsam ntawm biofilm.
Txoj kev no yog ib txoj kev kho mob lom nrog biofilm ua lub ntsiab ntawm kev ua kom huv. Biofilm yog ib qho mucous daim nyias nyias txuas rau saum npoo ntawm cov cab kuj thiab feem ntau tsim los ntawm cov kab mob micelles. Kev ua haujlwm ntawm biofilm yog tib yam li cov activated sludge nyob rau hauv cov txheej txheem activated sludge, thiab nws cov microbial muaj pes tsawg leeg kuj zoo ib yam. Lub hauv paus ntsiab lus tseem ceeb ntawm kev lim dej phwj yog adsorption thiab oxidative decomposition ntawm cov organic teeb meem hauv dej phwj los ntawm biofilm txuas rau saum npoo ntawm cov cab kuj. Raws li txoj kev sib txawv ntawm qhov nruab nrab thiab cov dej, cov txheej txheem biofilm suav nrog cov txheej txheem biological turntable thiab ntauwd biological filter method.
Nyob rau hauv cov xwm txheej anoxic, txoj kev siv cov kab mob anaerobic (xws li cov kab mob facultative anaerobic) kom decompose organic pollutants hauv dej phwj kuj hu ua anaerobic digestion lossis anaerobic fermentation. Vim tias cov khoom fermentation tsim methane, nws tseem hu ua methane fermentation. Txoj kev no tuaj yeem tsis tsuas yog tshem tawm ib puag ncig muaj kuab lom, tab sis kuj tseem txhim kho bio-zog, yog li tib neeg tau saib xyuas ntau. Anaerobic fermentation ntawm cov dej phwj tuaj yog ib qho ecosystem nyuaj heev, uas muaj ntau hom kab mob sib txawv, txhua tus xav tau cov substrates thiab tej yam kev mob sib txawv, tsim kom muaj ib qho ecosystem complex. Methane fermentation muaj peb theem: liquefaction theem, hydrogen ntau lawm thiab acetic acid ntau lawm theem thiab methane ntau lawm theem.
Kev kho cov dej phwj tuaj yeem muab faib ua thawj, theem nrab thiab theem nrab kev kho mob raws li qib kev kho mob.
Kev kho thawj zaug: Nws tsuas yog tshem tawm cov khoom paug tawm hauv cov dej phwj tuaj, thiab feem ntau ntawm txoj kev kho lub cev tsuas tuaj yeem ua tiav cov cai ntawm kev kho thawj zaug. Tom qab thawj qhov kev kho dej phwj tuaj, BOD feem ntau tuaj yeem raug tshem tawm li ntawm 30%, uas tsis ua raws li tus qauv tso tawm. Thawj txoj kev kho mob belongs rau preprocessing ntawm theem nrab kev kho mob.
Cov txheej txheem kev kho mob tseem ceeb yog: cov dej phwj nyoos uas tau dhau los ntawm cov phiajcim ntxhib yog nqa los ntawm cov kav dej phwj nqa - dhau los ntawm kab sib chaws lossis cov sieve - thiab tom qab ntawd nkag mus rau hauv chav grit - cov dej phwj sib cais los ntawm cov xuab zeb thiab dej nkag mus rau hauv lub hauv paus sedimentation. tank, cov saum toj no yog: Thawj ua (piv txwv li lub cev ua). Lub luag haujlwm ntawm lub grit chamber yog tshem tawm cov inorganic hais nrog ib tug loj lub ntiajteb txawj nqus. Feem ntau siv grit chambers yog advection grit chambers, aerated grit chambers, Dole grit chambers thiab tswb-hom grit chambers.
Secondary kev kho mob: Nws tsuas yog tshem tawm colloidal thiab yaj cov organic kuab paug (BOD, COD tshuaj) nyob rau hauv cov dej phwj tuaj, thiab tus nqi tshem tawm yuav ncav cuag ntau tshaj 90%, thiaj li hais tias cov organic paug tuaj yeem ua tau raws li tus qauv tso tawm.
Cov txheej txheem kev kho mob thib ob yog: cov dej ntws tawm ntawm thawj lub tank nkag mus rau cov khoom siv kho mob lom neeg, suav nrog cov txheej txheem sludge thiab biofilm, (lub reactor ntawm activated sludge method suav nrog aeration tank, oxidation ditch, thiab lwm yam. Cov txheej txheem biofilm suav nrog. Biological lim tank, biological turntable, biological contact oxidation method thiab biological fluidized txaj), cov dej ntws tawm los ntawm cov khoom siv tshuaj lom neeg nkag mus rau theem nrab sedimentation tank, thiab cov effluent los ntawm theem nrab sedimentation tank yog tawm tom qab tshuaj tua kab mob los yog nkag mus rau tertiary kev kho mob.
Tertiary kev kho mob: feem ntau cuam tshuam nrog refractory organic teeb meem, soluble inorganic teeb meem xws li nitrogen thiab phosphorus uas yuav ua tau.
eutrophication ntawm dej lub cev. Cov txheej txheem siv xws li biodenitrification thiab tshem tawm phosphorus, coagulation sedimentation, xuab zeb tus nqi txoj kev, activated carbon adsorption method, ion exchange method thiab electroosmosis analysis method.
Cov txheej txheem kho tertiary yog raws li nram no: ib feem ntawm cov sludge nyob rau hauv lub thib ob sedimentation tank yog xa rov qab mus rau lub thawj sedimentation tank los yog cov khoom siv tshuaj lom neeg, thiab ib feem ntawm cov sludge nkag mus rau hauv lub sludge thickening tank, thiab ces nkag mus rau lub sludge digestion tank. Tom qab dewatering thiab ziab cov cuab yeej, cov sludge yog thaum kawg siv.
Txawm hais tias nws yog tus neeg yuav khoom tshiab lossis tus neeg yuav khoom qub, peb ntseeg hauv kev tsim tshwj xeeb ntawm ammonia degrading cov kab mob rau kev kho dej hauv Suav teb, kev nthuav dav ntawm cov kab mob aerobic tus neeg sawv cev thiab kev sib raug zoo, peb zoo siab tos txais cov neeg siv khoom tshiab thiab qub hu rau peb ntawm lub xov tooj ntawm tes. los yog xa email tuaj nug peb los tsim kev lag luam mus sij hawm ntev thiab sib koom ua tiav.
Kev kho dej khib nyiabTuam Tshoj Bacteria Tshwj Xeeb Tsim, Tus Kab Mob Dej Kho Dej, raws li cov neeg ua haujlwm paub zoo, muaj tswv yim tshiab thiab muaj zog, peb tau ua tus saib xyuas txhua yam ntawm kev tshawb fawb, tsim, tsim, muag thiab kev faib tawm. Los ntawm kev tshawb nrhiav thiab tsim cov thev naus laus zis tshiab, peb tsis yog ua raws nkaus xwb tab sis coj mus rau kev lag luam zam. Peb ua tib zoo mloog cov neeg siv khoom tawm tswv yim thiab muab kev sib txuas lus tam sim. Koj tam sim ntawd xav tias peb cov kws tshaj lij thiab kev pabcuam zoo.
Lub sij hawm xa tuaj: Jun-11-2022