Tom qab kev ua haujlwm
- Qhov chaw:Kev kho dej khib nyiab hauv qab cov tshuaj lom neeg hauv Zhejiang
- Nyuaj:Nws siv A2O txheej txheem kom tshem tawm cov nitrogen los ntawm cov ntaub ntawv pov tseg pov tseg. Tab sis nws muaj peev xwm sib xws ntawm ntau ntau lawm wastertewaters, muaj ntau npaum li cas ntawm ca ²⁺ thiab sil e ions hauv supernatant ntawm Carbide SLAG los ntawm Acetylene Wastewater. Cov ions tiag cuam tshuam rau cov txheej txheem nitrification nitrification thiab kev ua haujlwm ntawm cov nroj tsuag.
- Peb ntsuas:1. Ntxiv cov chaw ua haujlwm ntawm cov theem pib . 2.}}}}}} hloov mus rau theem nrab aerobic rau MBBR cov txheej txheem.
Sim cov ntaub ntawv thiab cov hau kev
Nyoos cov dej ua tau zoo
Tus neeg muab kev pab rau cov nroj tsuag uas sim tau muab los ntawm kev kho kom zoo ntawm kev kho dej kom huv ntawm homogenization tank. Rooj 1 nthuav qhia tus nqi hluav taws xob ua tau ntsuas. Raws li cov kev sim ua kev sim, tus muaj peev xwm ammonia nitrogen concentration tau tsa ua nitrogen ntxiv los tswj kev kub ntxhov ntawm 120-220 mg / l.
Txheej Txheem Flow thiab Cov Khoom Siv Tseem Ceeb
Cov txheej txheem kev kho kom muaj kev kho ntshav tam sim no yog A2O txheej txheem (Daim duab A2), nrog AO Theem siv cov kev ua kom zoo nkauj thiab cov ntaub ntawv kawg nkaus ntxiv. Tus tsim qauv Flow yog 14,400 m³ / d. Cov txheej txheem sim chav kawm muaj nyob hauv daim duab 2, nrog tus nqi txaus ntawm 100 l / h thiab txuas ntxiv 24 teev ua haujlwm.
Cov tsav tsheb tseem ceeb muaj xws li qhov txuas ntxiv ntawm cov chaw ua ntej thiab hloov dua siab tshiab ntawm theem nrab Aerobic rau ntawm tus txheej txheem MBBR. Qhov no hybrid tau tshem tawm - txuas cov qauv tsim hauv lub xeev tshem tawm cov kev xav tau ntawm lub tsev pheeb suab hauv av. Cov lus 2 teev cov kev qhia tshwj xeeb thiab qhov ntev ntawm cov khoom siv tseem ceeb.
Cov txiaj ntsig thiab kev sib tham
1. Pib thiab ua haujlwm
Lub sim chav tsev pib nyob rau lub Plaub Hlis 2007, pib nrog microbial inoculation. Lub sludge ntxiv yog muaj los ntawm cov nroj tsuag pib aerobic tank. MBBR's Nitrifify cov kab mob tau sib koom tes nrog cov dej phwj hauv, nrog NaCole Sulfate-}} Cov ammonia nitrogen load. Cov dej tsis muaj zog nyob rau hauv thawj aerobic tank yog tom qab nce, mus txog qhov kev xav tau tom qab kwv yees li ib hlis, tso cai rau kev sim siab. Thaum lub sijhawm ua haujlwm, cov MLSS hauv kev tso tsheb hlau luam anoxic thiab aerobic tso tsheb hlau luam yog 4,832 mg / u, thaum nyob hauv MLBR Tank, cov MLSS yog 5,091 mg / l. Ua theem hauv anoxic tank tau 3 mg / l, thiab hauv lub pobkb tank, lawv tau nyob ntawm no 3-4 mg / l, nrog ib tus pheebsuab kab mob rau Nitrifying Bacteria kev loj hlob.
2. Pretrice kev ua tau zoo
Feso₄ thiab Nahco₃ tau ntxiv rau lub pre -}}}}}}}}}}}}}}}}}}}}}}}}}}}} }inging }inging approximately 7. 7. 7. 7.7, nrog saib xyuas lub effluent ua thiab s²⁻ motion. Kev xav tau zoo yog ib puag ncig 300 mg / l, thaum muaj kev txo qis rau cov kev ua ub no hauv kev kho kabmob muaj roj ntsha. Txawm li cas los xij, qhov pretreatment tsis tshua ua tau zoo rau kev tshem tawm sau kev tshem tawm, tawm ntawm qhov siab zoo.
3. Cod tshem tawm efficiency
Tus lej tsis muaj zog tau tsa mus rau 1,000 mg / l raws li kev xeem ntawv. Vim yog ob - theem AREROBIC teeb nrog ua ntej-}}}}}}}}}}}}}}}}}}}} Kev noj tshwj xeeb thaum lub sij hawm denitrification. Raws li cov lus tshaj tawm, tus lej: TK RECIO saum 6.6: 1 yog xav tau kom tiav rau kev ua tiav; Txawm li cas los xij, qhov kev sim sim tau nruab nrab ntawm 4.5-8.3, uas ua rau muaj qhov nruab nrab qhov txwv tsawg ntawm 69%. Txawm hais tias tus lej tsis zoo yog tus muaj siab, cov delluent cod concentration tseem qab 100 mg / l. Daim duab 3 qhia txog cov kev ntsuas hluav taws xob effluent thaum lub Yim Hli ua haujlwm ntawm 93.3%, kev sib ntsib ntawm Suav Teb "(GB 8978-1996) chav kawm.
4. Ammonia nitrogen tshem tawm efficiency
Thaum lub sij hawm xeem txij Lub Yim Hli mus txog Lub Yim Hli 2007, lub siab phem TNNACH txog ntawm 120-220 mg / u, nrog kev tshem tawm tus nqi tshaj 95%. Cov txheej txheem no tau raug tshem tawm Kjeldahl nitrogen vim muaj kev ncua qib MBBL hauv kev ncua thiab txhim kho sludge concentration thiab txhim kho lub system ua rau poob siab. Ammonia nitrogen load yog 0.018 kg / (KGN.). Txawm li cas los xij, thaum tsaus ntuj kub nyob rau lub Cuaj Hlis pib sib txawv tau piv rau Lub Yim Hli, muaj me ntsis txo qis ntawm Touch tshem tawm efficiency.
5. Calolium ion Kev Tshawb Xyuas hauv MBRB Tank Fillers
Cov ntawv ceeb toom qhia tias Ca²⁺ Depigition inhibits nitricification. Hauv kev kho cov khoom lag luam cog qoob loo txoj haujlwm, calcium ion tso rau cov ferobic tank inhibited attibic efficiency hauv lub aerobic tank. Vim tias Pretreaticment tsis muaj txiaj ntsig rau CAO tshem tawm, tsim nyog tshuaj xyuas Cau hauv MBBR cov kev ua tiav tau ua. Calcimium cov ntsiab lus tseem ceeb tau 2.13% rau lub Tsib Hlis, 1.89% thaum Lub Xya Hli, thiab 1.04% hauv lub Cuaj Hli, qhia txog Ca Follers. Txawm li cas los xij, vim muaj kev txav mus los ntawm MBRBR cov fitters, tso nyiaj rau sab nrauv, tiv thaiv kev puas tsuaj ntawm nitricification.
Cov lus xaus
Qhov kev sim no kawm los ntawm Aleasust Retrofitted cov nroj tsuag los ntawm kev ntxiv cov chaw ua ntej hauv theem pib thiab tshwj xeeb hauv theem MBRB hauv lub aerobic. Cov ntaub ntawv kawg pom tau zoo tshwm sim raws li hauv qab no:
1. Tom qab ua tau zoo pretreatment, txoj kev pom zoo eant Zuag qhia tag nrho kev ruaj ntseg tau tswj hwm, tau txais txiaj ntsig ntawm kev kho muaj roj ntsha.
2. Thaum lub sij hawm tsis muaj zog ntawm 1,000 mg / l, lub dog effluent cod tseem qis dua 80 mg / l, nrog ib qho nruab nrab cod tshem tawm tus nqi ntawm 93.3%, ntsib cov cai.
3. Lub tsev kawm ntawv MBBR ua tiav Kjeldahl Nitrogen tshem tawm tus nqi, qhov nruab nrab tshaj 95% nrog ammonia nitrogen load ntawm 0.018 kg / (KGPY).
4. Calion saib xyuas nyob rau hauv MBRB tank fillers qhia tias qhov tseem ceeb tshaj tawm tau tiv thaiv, tivting cov kev tsis zoo ntawm nitricification.