Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm cov txheej txheem AAO thiab AO? (Part 1)
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
1. Kev sib piv ntawm AAO thiab AO tshem tawm kev ua haujlwm
1.1 AAO, AO txheej txheem: COD tshem tawm kev sib piv
1.2 AAO, AO txheej txheem: kev sib piv ntawm denitrification kev ua tau zoo
1.3 AAO, AO txheej txheem: kev sib piv ntawm phosphorus tshem tawm kev ua haujlwm
1.4 AAO thiab AO txheej txheem: kev sib piv thiab cov ntsiab lus ntawm kev tshem tawm
2. Kev cuam tshuam ntawm qhov kub thiab txias ntawm nitrogen thiab phosphorus tshem tawm los ntawm AAO thiab AO
2.1 Kev cuam tshuam ntawm qhov kub thiab txias ntawm COD tshem tawm los ntawm ob txheej txheem
2.2 Cov nyhuv ntawm qhov kub thiab txias ntawm denitrification ntawm ob txheej txheem
2.3 Cov nyhuv ntawm qhov kub thiab txias ntawm phosphorus tshem tawm los ntawm ob txheej txheem
3. Qhov cuam tshuam ntawm Influent C/N Ratio ntawm Nitrogen thiab Phosphorus Tshem Tawm los ntawm AAO thiab AO
3.1 Kev cuam tshuam ntawm kev cuam tshuam C / N piv ntawm COD tshem tawm hauv ob txheej txheem
3.2 Kev cuam tshuam ntawm C / N piv rau denitrification ntawm ob txheej txheem
3.3 Kev cuam tshuam ntawm C / N piv ntawm phosphorus tshem tawm los ntawm ob txheej txheem
4. Qhov cuam tshuam ntawm Influent C/P Ratio ntawm Nitrogen thiab Phosphorus Tshem Tawm los ntawm AAO thiab AO
4.1 Kev cuam tshuam ntawm C / P piv rau COD tshem tawm hauv ob txoj haujlwm
4.2 Kev cuam tshuam ntawm kev cuam tshuam C / P piv rau denitrification ntawm ob txheej txheem
4.3 Kev cuam tshuam ntawm C / P piv rau kev tshem tawm phosphorus los ntawm ob txheej txheem
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
Tam sim no, feem ntau ntawm cov thev naus laus zis tshem tawm nitrogen thiab phosphorus siv hauv cov chaw kho dej phwj thoob ntiaj teb yog cov txheej txheem lom neeg, xws li txheej txheem AO, txheej txheem AAO, txheej txheem oxidation ditch, txheej txheem AB, txheej txheem SBR, thiab lwm yam ...
Cov txheej txheem no tsis zoo siab heev, thiab lawv saib yooj yim heev, tab sis nws yuav siv sij hawm ntau txoj haujlwm kom nkag siab txog lawv qhov zoo thiab qhov tsis zoo thiab sib piv qhov twg yog qhov zoo thiab qhov phem.
Txog qhov kawg no, kuv nyeem ntau cov ntawv nyeem, tab sis tom qab kev kawm,Kuv pom tias feem ntau ntawm kev sib piv ntawm cov phooj ywg tsom rau AAO, SBR, thiab oxidation ditch txheej txheem, thiab ob peb tus neeg piv AO thiab AAO txheej txheem.
Yog li ntawd,txhawm rau tshawb nrhiav cov yam ntxwv ntawm AO thiab AAO, kom nkag siab txog lawv cov kev tshem tawm ntawm COD, NH3-N, TN, thiab TP hauv cov dej phwj tuaj, nrog rau qhov kub thiab txias, qhov muaj txiaj ntsig C / N piv, thiab muaj txiaj ntsig C / P ratio. Hais txog qhov cuam tshuam ntawm nitrogen thiab phosphorus tshem tawm los ntawm cov txheej txheem, Kuv tau mus ntsib Tus Thawj Coj Wang ntawm Xinling Cov Dej Dej Kho Dej.Tus Thawj Coj Wang ncaj qha coj tawm qhov nruab nrab txhua hli ntawm cov ntsuas muaj txiaj ntsig thiab cov dej ntws tawm ntawm Xinling Cov Dej Dej Kho Dej hauv xyoo 2019 (AO txheej txheem) thiab 2021 (AAO txheej txheem), thiab muab kuv cov kev sib piv hauv qab no.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
1. Kev sib piv ntawm AAO thiab AO tshem tawm kev ua haujlwm
1.1 AAO, AO txheej txheem: COD tshem tawm kev sib piv
Lub peev xwm ntawm cov txheej txheem kho dej khib nyiab kom tshem tawm cov organic teeb meem yog ib qho ntawm cov cim tseem ceeb los qhia txog kev ua haujlwm ntawm cov txheej txheem. Qhov loj ntawm COD ncaj qha qhia txog cov organic teeb meem hauv cov dej khib nyiab.
DPS cov ntaub ntawv ua cov txheej txheem tau siv los ntsuas qhov tseem ceeb ntawm qhov sib txawv ntawm COD concentration thiab COD tshem tawm tus nqi ntawm qhov cuam tshuam thiab effluent ntawm ob txheej txheem. Cov txiaj ntsig tau pom tiastsis muaj qhov sib txawv tseem ceeb hauv COD hauv kev cuam tshuam ntawm ob txoj haujlwm, tab sis muaj qhov sib txawv tseem ceeb hauv COD thiab tshem tawm tus nqi ntawm cov dej ntws tawm. Kev tshem tawm yog qhov zoo dua li cov txheej txheem AO.
Yog vim li cas yog tias nyob rau hauv cov txheej txheem AO, cov tshuaj tiv thaiv denitrification nyob rau hauv seem anoxic tuaj yeem haus ib feem ntawm cov organic teeb meem hauv cov dej phwj tuaj, tab sis feem ntau ntawm cov organic teeb meem raug tshem tawm los ntawm aerobic degradation, thaum lub sij hawm hydraulic retention ntawm aerobic seem. cov txheej txheem AO nyob rau hauv thawj theem ntawm Xinling Sewage Plant Project luv luv, lub ntim ntawm lub aeration tank yog me me, thiab tus nqi ntawm aeration tsis txaus, uas ua rau tsis zoo tshem tawm cov organic. teeb meem.
Nyob rau hauv cov txheej txheem AAO, feem ntau ntawm cov organic teeb meem yog hloov mus rau hauv PHB los ntawm phosphorus accumulating kab mob nyob rau hauv lub anaerobic seem thiab khaws cia nyob rau hauv lub hlwb, thiab ib feem ntawm cov organic teeb meem yog tshem tawm los ntawm denitrification nyob rau hauv lub anoxic seem. Thaum cov dej khib nyiab nkag mus rau hauv ntu aerobic, COD concentration yog nyob ze rau tus qauv tso tawm. , yuav ntxiv degraded nyob rau hauv lub aerobic theem.
Cov kev tshawb fawb tau pom tias COD tshem tawm tus nqi ntawm seem anaerobic ntawm AAO txheej txheem tuaj yeem ncav cuag ntau dua 80%, thaum qhov kev tshem tawm ntawm ntu anoxic qis dua 10% ntawm qhov nruab nrab.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
1.2 AAO, AO txheej txheem: kev sib piv ntawm denitrification kev ua tau zoo
Nyob rau hauv xyoo tas los no, nrog kev nce qib ntawm eutrophication ntawm ib puag ncig dej zoo thiab kev txhim kho txuas ntxiv ntawm cov qauv dej phwj tuaj, nrhiav kev ua kom zoo denitrification tau dhau los ua ib qho teeb meem tseem ceeb hauv kev tsim cov dej phwj tuaj tam sim no. Ob txoj kev AAO thiab cov txheej txheem AO muaj kev ua haujlwm ntawm biological denitrification, thiab cov txheej txheem denitrification ntawm ob txheej txheem yog tib yam, thiab ob qho tib si yog denitrification thiab denitrification.
Los ntawm qhov sib txawv tseem ceeb ntawm kev sim ntawm TN concentration thiab TN tshem tawm tus nqi nyob rau hauv lub zog thiab effluent ntawm ob txheej txheem, cov txiaj ntsig tau qhia tiastsis muaj qhov sib txawv tseem ceeb hauv TN muaj txiaj ntsig ntawm ob txheej txheem, tab sis cov dej ntws TN thiab kev tshem tawm tus nqi sib txawv, thiab cov txheej txheem AAO tuaj yeem tshem tawm TN zoo dua li txheej txheem AO.
Nyob rau hauv cov txheej txheem denitrification thiab denitrification, nitrate nitrogen yog cov khoom tseem ceeb hauv tag nrho cov nitrogen hauv cov dej ntws tawm, thiab kev tshem tawm tus nqi ntawm nitrate nitrogen hauv seem anoxic tuaj yeem siab dua 90%. Qee cov kev tshawb fawb tau taw qhia tias kev tswj cov nitrate concentration ntawm cov dej ntws tawm hauv thaj chaw anoxic mus rau 1 mg / L txog 2 mg / L tuaj yeem ua rau qhov kev tshem tawm ntau tshaj plaws ntawm TN thiab siv tag nrho COD los txhim kho lub peev xwm denitrification ntawm thaj chaw anoxic. Cov kua sib xyaw ua ke hauv thaj chaw aerobic muaj ntau cov nitrate nitrogen, uas tau xa rov qab mus rau thaj chaw anoxic los ntawm kev ncig sab hauv, thiab cov tshuaj tiv thaiv denitrification yog nqa tawm hauv thaj chaw anoxic.
HRT nyob rau hauv lub anoxic seem ntawm AO txheej txheem nyob rau hauv Xinling Wastewater Treatment Plant yog luv heev, tsuas yog 1.8h, uas yog tsawg tshaj li 3.46h nyob rau hauv cov txheej txheem AAO, thiab lub internal reflux ratio yog 50% mus rau 100%, uas yog tsawg dua. 150% mus rau 250% ntawm cov txheej txheem AAO, ua rau denitrification. Tsis ua haujlwm zoo li AAO. Ntxiv mus, cov nyhuv denitrification ntawm cov txheej txheem AO tsis ruaj khov li ntawm cov txheej txheem AAO, thiab cuam tshuam zoo heev los ntawm lwm yam (kub, C / N piv, thiab lwm yam).
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
1.3 AAO, AO txheej txheem: kev sib piv ntawm phosphorus tshem tawm kev ua haujlwm
Cov ntsiab lus phosphorus ntau dhau hauv dej kuj tseem yuav ua rau kev loj hlob ntawm cov kab mob, kev loj hlob ntawm plankton, thiab qhov tshwm sim ntawm eutrophication. Qhov tshwm sim ntawm denitrification phosphorus tshem tawm thev naus laus zis yog qhov ua tiav rau cov txheej txheem kev tshem tawm cov tshuaj lom neeg phosphorus, uas tuaj yeem tsis tsuas yog daws cov kev tsis sib haum xeeb uas muaj nyob rau hauv cov txheej txheem ib txwm muaj, tab sis kuj tseem pab kom paub txog kev kho cov dej phwj tuaj.
Los ntawm qhov sib txawv tseem ceeb ntawm kev sim ntawm TP concentration thiab TP tshem tawm tus nqi ntawm lub zog thiab cov dej ntws tawm ntawm ob txoj kev, cov txiaj ntsigqhia tias tsis muaj qhov sib txawv tseem ceeb hauv TP uas muaj txiaj ntsig ntawm ob txheej txheem, tab sis cov dej ntws TP thiab kev tshem tawm tus nqi sib txawv heev, thiab cov txheej txheem AAO tuaj yeem tshem tawm TP zoo dua li txheej txheem AO.
Yog vim li cas yog tsis muaj anaerobic phosphorus tso tawm seem nyob rau hauv AO txheej txheem ntawm thawj-theem project ntawm Xinling WWTP, thiab nyob rau hauv cov txheej txheem ntawm lom phosphorus tshem tawm, cov phosphorus accumulating kab mob tsuas yog tso tawm phosphorus nyob rau hauv lub anaerobic seem kom paub meej tias. anaerobic seem thiab aerobic txheej txheem no muaj ib tug zoo phosphorus nqus nyhuv, thiab Kev tshem tawm ntawm phosphorus los ntawm cov txheej txheem no tsuas yog los ntawm kev sib xyaw ntawm cov kab mob.
Kev tshem tawm phosphorus ntawm AAO txheej txheem yog ua tiav los ntawm phosphorus accumulating kab mob. Feem ntau hais lus, tus nqi ntawm phosphorus coj los ntawm phosphorus accumulating kab mob nyob rau hauv lub sij hawm anoxic thiab aerobic yog ntau tshaj li uas tso tawm nyob rau hauv lub sij hawm anaerobic. Cov kev tshawb fawb tau pom tias qhov sib piv ntawm qhov nruab nrab phosphorus nqus mus rau qhov nruab nrab phosphorus tso tawm hauv AAO txheej txheem yog 1.28, thiab cov phosphorus nqus nyob rau hauv cov theem anoxic yog siab dua li nyob rau hauv aerobic theem.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
1.4 AAO thiab AO txheej txheem: kev sib piv thiab cov ntsiab lus ntawm kev tshem tawm
Hauv cov ntsiab lus, AAO txheej txheem rau kev tshem tawm cov organic teeb meem, nitrogen thiab phosphorus yog qhov zoo dua li cov txheej txheem AO, tshwj xeeb tshaj yog rau kev tshem tawm phosphorus. Txij li cov txheej txheem AO tsis muaj theem anaerobic, tsuas yog ib feem me me ntawm phosphorus tuaj yeem raug tshem tawm los ntawm kev sib xyaw ntawm cov kab mob. Yog tias yuav tsum tau tshem tawm phosphorus, tsis txhob xaiv cov txheej txheem no lossis nce cov tshuaj phosphorus tshem tawm.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com