Rau cov neeg ua haujlwm kho dej khib nyiab, ob peb qhov xwm txheej muaj kev ntxhov siab ntau dua - ua rau muaj kev cuam tshuam tsis zoo uas tsis paub txog kev nkag mus rau theem lom. Tsis pub dhau ib teev, nitrification tuaj yeem tsoo. Cov tshuaj ammonia muaj zog. Sludge pib tawg. Kev rov qab tuaj yeem siv sijhawm ntau lub lis piam - yog tias biomass tseem muaj sia nyob. Kev nkag siabYuav ua li cas toxic compounds cuam tshuam kev kho mob theem nrabtsis yog kev kawm txuj ci - nws yog ib qho kev paub tseem ceeb rau txhua tus neeg lub luag haujlwm rau kev tswj xyuas kev ua raws cai, kev kho mob ruaj khov.
Nkag siab txog Kev Nyuaj Siab
Qhov twg toxicity los ntawm - Thiab yog vim li cas nws tseem ceeb
Cov txheej txheem dej khib nyiab thib ob yog nyob ntawm cov zej zog sib txawv ntawm cov kab mob microbial kom degrade organic pollutants thiab tshem tawm cov as-ham xws li nitrogen thiab phosphorus. Txawm li cas los xij, muaj cov tshuaj lom hauv cov dej khib nyiab tuaj yeem ua taucuam tshuam cov txheej txheem kho mob lom. Cov tshuaj lom neeg tuaj yeem tshwm sim los ntawm kev lag luam tawm, tshuaj lom neeg, cov hlau hnyav, tshuaj tua kab mob, lossis cov khoom siv tshuaj lom neeg ntau ntau - thiab lawv cov teebmeem tuaj yeem nrawm thiab hnyav.
Cov tshuaj lom tshuaj lom no tawm tsam kev kho mob lom neeg ntawm qib cellular: lawv inhibit microbial enzyme kev ua, txo qis biomass loj hlob, thiab ua rau cov kab mob nitrifying, uas yogtshwj xeeb tshaj yog rhiab rau ib puag ncig kev ntxhov siab. Yog li ntawd, kev kho kom zoo tuaj yeem poob qis, ua rau cov dej tsis zoo thiab kev ua haujlwm tsis ruaj khov. Rau cov chaw tso tawm mus rau cov dej tau txais kev nkag siab lossis ua haujlwm raws li kev tso cai nruj, qhov no yog qhov tsis yooj yim dua - nws yog qhov teeb meem kev ua raws cai.
Txoj Kev Kawm tau ua li cas
Tswj Kev Ntsuas Raws li qhov muaj tiag
Txhawm rau kom nkag siab qhov cuam tshuam tiag tiag ntawm cov tshuaj lom neeg muaj txiaj ntsig, tus tsav - nplai qhib cov sludge thiab biofilm reactor tshuab tau ua haujlwm siv cov dej khib nyiab hauv nroog ua lub hauv paus muaj zog. Kev tswj cov koob tshuaj ntawm cov tshuaj lom neeg sawv cev - suav nrogammonia inhibitors, phenolic tshuaj, thiab qis -concentration hnyav hlau- tau qhia los simulate industrial shock loading tej yam kev mob uas cov nroj tsuag tej zaum yuav ntsib nyob rau hauv tiag tiag - ntiaj teb no ua hauj lwm.
Cov kev ua haujlwm tseem ceeb tau khaws cia nyob rau hauv cov chaw kho mob ib txwm muaj:
| Kev Ua Haujlwm Parameter | Ntau yam |
| Hydraulic Retention Time (HRT) | 6 rau 12 h |
| Sludge Retention Time (SRT) | 10 mus rau 25 hnub |
| Dissolved Oxygen | 2 mus rau 4 mg / L (automated aeration tswj) |
Kev saib xyuas kev ua tau zoo suav nrog COD tshem tawm, BOD5tshem tawm, ammonia oxidation, tag nrho cov nitrogen tshem tawm, sludge ntim index (SVI), thiab effluent turbidity. Kev ua haujlwm ntawm cov kab mob microbial raug soj ntsuam los ntawm kev ntsuas oxygen uptake rate (OUR). Cov qauv hauv zej zog microbial tau txheeb xyuas siv cov kev soj ntsuam xyuas thiab ua raws li cov txheej txheem los txheeb xyuas cov kev hloov pauv hauv nitrifying thiab heterotrophic cov neeg nyob rau hauv kev ntxhov siab.
Cov kev tshawb pom tseem ceeb
Nitrification yog Canary hauv Coal Mine
Txoj kev tshawb fawb tau lees paub tias muaj kev cuam tshuam toxicity muajdisproportionate heev cuam tshuam rau cov txheej txheem nitrification. Txawm tias tsis tshua muaj siab ntawm cov tshuaj lom neeg ua rau pom pom inhibition ntawm ammonia- cov kab mob oxidizing (AOB), uas ua rau muaj kev cuam tshuam sai ntawm nitrification efficiency. Qhov kev tshawb pom no muaj qhov cuam tshuam tseem ceeb: ammonia breakthrough feem ntau yog thawj qhov cim qhia tias qee yam tshuaj lom tau nkag mus rau hauv lub cev, thiab nws yuav tsum ua rau kev tshawb nrhiav tam sim ntawd.
Hauv qhov sib piv, COD thiab BOD tshem tawm pov thawjntau resilient. Nyob rau hauv nruab nrab toxic loading, COD kev tshem tawm efficiency tseem nyob saum 85 mus rau 90%, thaum ammonia tshem tawm poob qis los ntawm ntau tshaj 95% mus rau qis li 60 mus rau 80% nyob ntawm theem toxicity thiab lub sij hawm raug. Qhov tsis sib xws no qhia txog qhov muaj qhov tsis zoo ntawm cov kab mob nitrifying - lawv qhov kev loj hlob qeeb thiab cov metabolism tshwj xeeb ua rau lawv muaj kev cuam tshuam ntau dua rau kev cuam tshuam lom ntau dua li cov neeg muaj zog thiab ntau haiv neeg heterotrophic lub luag haujlwm rau kev tshem tawm carbon.
Biofilm Systems: Ua -Nyob rau hauv Shield tiv thaiv toxicity
Ib qho kev tshawb pom tseem ceeb tshaj plaws yog qhovcim qhov sib txawv ntawm resilience ntawm activated sludge thiab biofilm -raws li systems. Cov tshuab ua kom cov sludge tau pom tias muaj kev cuam tshuam ntau dua rau cov tshuaj lom neeg poob siab - biomass ntxuav tawm tau yooj yim dua, thiab kev tiv thaiv kab mob microbial tau tshaj tawm. Hauv qhov sib piv, biofilm-raws li tshuab tau pom tias muaj kev tiv thaiv zoo dua.
Yog vim li cas nyob rau hauv lub cev qauv ntawm lub biofilm. Lub zej zog microbial txuas nrog muab kev tiv thaiv matrix uas txwv tsis pub cuam tshuam ncaj qha ntawm cov kab mob rhiab rau cov tshuaj lom. Lub extracellular polymeric tshuaj (EPS) nyob rau hauv biofilms kuj pab adsorb los yog tsis toxic compounds, txo lawv zoo concentration ntawm microbial cell nto. Qhov no txhais tau tiastsiv txaj biofilm reactor (MBBR) thiab lwm yam txuas nrog -cov thev naus laus zis loj hlob tuaj yog qhov zoo dua rau kev tswj hwm qhov sib txawv lossis tsis muaj txiaj ntsig zoo- qhov zoo tshaj plaws rau kev siv dej khib nyiab hauv kev lag luam.
| Teb Metric | Activated Sludge | Biofilm System |
| Nitrification Hauv Toxic Load | inhibition hnyav; poob 60-80% | Nruab nrab inhibition; poob 40 rau 55% |
| COD Tshem Tawm Stability | Tseem nyob saum 85 mus rau 90% | Tseem nyob saum 88 rau 92% |
| Biomass Retention | pluag; kev nyab xeeb | Zoo; EPS tiv thaiv |
| Sludge Settleability (SVI) | Deteriorates heev | Me me deterioration |
| Lub Sijhawm Rov Qab | qeeb; hnub mus rau lub lis piam | Ceev dua; feem ntau yog hnub |
Cov kev cuam tshuam
Cov kev tshawb pom no txhais li cas rau kev cog qoob loo
Cov kev tshawb fawb no muaj ntau cov lus qhia ua tau zoo rau cov kws kho dej khib nyiab:
1. Saib xyuas ammonia ua qhov taw qhia ceeb toom ntxov.Vim tias nitrifiers yog thawj pab pawg microbial uas qhia pom tias muaj tshuaj lom inhibition, qhov tshwm sim sai sai ntawm cov dej ammonia - tshwj xeeb tshaj yog thaum tshem tawm COD tseem nyob ruaj khov - yog qhov qhia tau tias muaj tshuaj lom neeg nkag mus rau hauv lub cev. Tiag - lub sij hawm ammonia saib xyuas ntawm lub aeration phiab effluent tuaj yeem muab kev ceeb toom ua ntej tseem ceeb ua ntej kev ua tsis tiav tag nrho.
2. Biofilm-raws li cov txheej txheem muab kev tuav pov hwm tus kheej.Rau cov chaw tau txais cov dej khib nyiab uas muaj qhov sib txawv zoo - lossis cov nroj tsuag uas tau ntsib cov xwm txheej lom yav dhau los - kev sib koom ua ke ntawm biofilm carriers (MBBR) los yog xav txog kev siv cov hybrid activated sludge -biofilm configuration muaj kev tiv thaiv zoo. Lub biofilm ua raws li ib tugreservoir ntawm kev tiv thaiv biomassuas tuaj yeem rov kho cov theem ncua tom qab muaj kev lom zem dhau mus.
3. Sludge settleability deteriorates nyob rau hauv toxicity - npaj raws li.Txoj kev tshawb no tau sau tseg qhov nce SVI qhov tseem ceeb nyob rau hauv cov kab mob lom, qhia tias cov qauv floc tsis zoo thiab txo cov kev daws teeb meem. Cov neeg ua haujlwm yuav tsum cia siab tias yuav muaj cov khib nyiab ntau dua ntawm cov lus qhia meej thaum lub sijhawm muaj tshuaj lom thiab xav txog kev txo qis hydraulic ib ntus los tiv thaiv cov khoom khib nyiab.
4. Rov qab cov tswv yim tseem ceeb.Lub sij hawm rov qab sib txawv heev nyob ntawm seb hom kab mob, nrog rau biofilm reactors rov qab sai dua li cov pa activated sludge. Thaum xav tau kev rov qab los, cov tswv yim xws li txo qis hydraulic loading, nce SRT kom khaws qeeb - loj hlob nitrifiers, thiab yog tias muaj, cov noob los ntawm cov kab ke noj qab haus huv tuaj yeem ua kom rov qab mus rau qhov ua tau zoo.
Cov tswv yim ua haujlwm rau kev tsim kom muaj zog
Ntau qhov kev ntsuas ua tau zoo tuaj yeem txhim kho lub chaw kho mob lub peev xwm los tiv thaiv cov xwm txheej muaj kuab lom:
| Tswv yim | Nws pab li cas | Kev siv yooj yim |
| Nce Sludge Retention Time (SRT) | khaws cia qeeb -cov nitrifiers loj hlob, muab cov neeg tsis muaj neeg coob | Tsawg rau nruab nrab |
| Nruab Equalization Tank | Dampens concentration peaks thiab kis toxic load thaum lub sij hawm | Nruab nrab mus rau siab (yog tias rov kho dua) |
| Ntxiv Biofilm Carriers (MBBR) | Tsim kev tiv thaiv biomass reservoir; rov qab sai tshaj tom qab poob siab | Tsawg (retrofit rau hauv cov tank uas twb muaj lawm) |
| Tiag -Lub Sijhawm Toxic Saib Xyuas | Kev tshawb pom ntxov ua rau tus neeg teb xov tooj ceev ceev thiab hloov pauv yog tias xav tau | Nruab nrab |
| Ua ntej-Kev Kho Mob rau Cov Chaw Lag Luam | Tshem tawm los yog tshem tawm cov teeb meem sib txuas ua ntej theem lom | Nruab nrab mus rau siab |
| Txo Hydraulic Loading thaum muaj xwm txheej | Nce lub sij hawm sib cuag rau degradation; txo qhov kev pheej hmoo ntawm kev ntxuav tawm | Tsawg (kev ua haujlwm hloov kho) |
Xaus
Lub Tsev Kho Mob Uas Rov Qab Rov Qab
Kev muaj kuab lom tsis zoo tsis yog qhov xwm txheej ntawm ntug - nws yog qhov rov ua haujlwm muaj tseeb rau suav tsis txheeb cov chaw kho dej khib nyiab, tshwj xeeb tshaj yog cov kev pabcuam hauv nroog sib xyaw - kev lag luam catchments. Cov pov thawj yog tseeb:toxic compounds disproportionately tua nitrification, thiab cov tshuab ua kom cov sludge yog qhov yooj yim dua li biofilm -raws li lwm txoj hauv kev.
Txoj hauv kev mus rau qhov kev kho mob uas muaj zog tiv thaiv muaj peb txoj hauv kev ntxiv:integrating biofilm tiv thaiv(los ntawm MBBR lossis hybrid configurations),optimizing kev ua haujlwm tsis zoo(tshwj xeeb yog SRT thiab kev thauj khoom hydraulic thaum lub sijhawm muaj xwm txheej), thiabsiv kev saib xyuas zoo thiab ua ntej -kev kho mobnyob qhov twg muaj qhov chaw muaj. Ua ke, cov kev ntsuas no hloov pauv cov txheej txheem lom neeg tsis zoo rau hauv qhov muaj zog, rov qab los- muaj peev xwm ua tau raws li qhov yuav tsum tau ua txawm tias thaum muaj kev cuam tshuam tsis zoo.
Rau cov chaw txiav txim siab txog kev hloov kho tshiab, cov ntaub ntawv txhawb nqa biofilm-raws li thev naus laus zis - tsis yog rau lawv qhov peev xwm thiab hneev taw zoo xwb, tab sis rau lawvinherent toxicity kuj, uas tej zaum yuav yog qhov tseem ceeb tshaj plaws ntawm txhua yam thaum lub tom ntej no tsis paub qhov paug nkag mus rau hauv lub kav dej.
Txhim kho koj txoj kev kho mob tiv thaiv kev poob siab
Tshawb nrhiav Juntai's MBBR biofilm carrier solutions - engineered los muab cov roj ntsha resilience koj cov nroj tsuag xav tau. Peb pab pawg kws tshaj lij tau npaj los pab koj ntsuas koj qhov kev pheej hmoo ntawm kev ua rau muaj kev phom sij txaus ntshai thiab tsim kom muaj kev hloov kho tshiab uas tiv thaiv koj cov dej tsis zoo thiab koj daim ntawv tso cai ua haujlwm.