Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm cov txheej txheem AAO thiab AO? (Part 3)
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 txheej txheem
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 plaws 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 mus rau AAO, SBR, thiab oxidation ditch txheej txheem, thiab ob peb tus neeg piv cov txheej txheem AO thiab AAO.
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 Sewage Treatment Plant hauv 2019 (AO txheej txheem) thiab 2021 ( txheej txheem AAO), thiab muab kuv cov kev sib piv hauv qab no.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
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
Rau cov txheej txheem AAO, COD tshem tawm tus nqi tseem nyob ruaj khov tsis hais txog C / N piv.
Qee cov ntaub ntawv qhia tiasfeem ntau ntawm COD yog synthesized rau hauv intracellular cia PHA los ntawm phosphorus accumulating kab mob nyob rau hauv anaerobic cheeb tsam. Qhov nruab nrab siv tus nqi yog nyob nruab nrab ntawm 75% thiab 85%. Kwv yees li 10% ntawm COD nkag mus rau thaj tsam anoxic, thiab yuav luag tsis muaj qhov seem.Qhov yooj yim biodegradable organic teeb meem nkag mus rau hauv cheeb tsam aerobic, yog li cov txheej txheem no tuaj yeem siv tag nrho cov pa roj carbon monoxide ntawm cov dej muaj zog thiab tsis tshua muaj kev cuam tshuam los ntawm kev cuam tshuam ntawm cov organic teeb meem load.
C / N piv muaj qee yam cuam tshuam rau kev tshem tawm COD hauv cov txheej txheem AO. Raws li cov ntaub ntawv ntawm Xinling Wastewater Treatment Plant, thaum C / N piv yog ntau dua 10, COD tshem tawm tus nqi txo me ntsis nrog rau qhov nce ntawm C / N piv, thiab cov organic teeb meem load muaj feem xyuam rau lub system.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
3.2 Kev cuam tshuam ntawm C / N piv rau denitrification ntawm ob txheej txheem
Nrog rau qhov nce ntawm C / N piv nyob rau hauv A / O txheej txheem, qhov kev tshem tawm ntawm TN txo yuav luag linearly, thiab cov organic teeb meem concentration muaj kev cuam tshuam loj heev ntawm cov txheej txheem nitrification ntau lawm.
Qhov no yog vim cov kab mob nitrifying yog cov kab mob autotrophic, thiab cov concentration ntawm cov organic teeb meem tsis yog qhov txwv rau nws txoj kev loj hlob. Yog hais tias qhov concentration ntawm cov organic teeb meem yog siab dhau lawm, cov kab mob heterotrophic nrog kev loj hlob sai sai yuav ntau zuj zus, thiab cov pa oxygen hauv dej yuav nyiam siv. Rau qhov kom zoo dua, kev ua haujlwm tau inhibited, uas cuam tshuam cov tshuaj tiv thaiv nitrification.
Hauv cov txheej txheem AAO, cov ntaub ntawv sim qhia tau hais tias thaum C / N piv tau nce los ntawm 5 txog 9, TN tshem tawm tus nqi nce ntxiv. Thaum C / N piv yog 8.9, TN tshem tawm tus nqi siab li 83.2%. Thaum N piv tau nce ntawm 9 mus rau 14, qhov kev tshem tawm ntawm TN tsis nce tab sis txo qis.
Thaum C / N piv tau nce mus rau qee tus nqi thiab TN tshem tawm tus nqi mus txog qhov siab tshaj plaws, TN tshem tawm tus nqi txo nrog qhov nce ntawm C / N piv.
Qhov laj thawj tseem ceeb yog tib yam li cov txheej txheem AO.Qhov nce ntawm C / N piv ua rau tsawg dua thiab tsawg dua cov kab mob autotrophic hauv lub cev, kev ua haujlwm nitrification txo qis, thiab tag nrho cov nitrogen tshem tawm txo qis.Qee cov ntaub ntawv qhia tau hais tias qhov tsawg kawg nkaus theoretical C / N piv rau kev ua kom tiav denitrification yog 2.86 tsis muaj qhov chaw cia ntawm cov pa roj carbon monoxide, tab sis qhov tseeb tus nqi yuav tsum loj dua tus lej no.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
3.3 Kev cuam tshuam ntawm C / N piv ntawm phosphorus tshem tawm los ntawm ob txheej txheem
Qhov C / N piv muaj qhov cuam tshuam zoo rau cov phosphorus tshem tawm cov txheej txheem AAO. Cov ntaub ntawv sim qhia tau hais tias thaum lub zog C / N piv tau nce ntawm 5 txog 9, TP tshem tawm tus nqi maj mam nce.
Qhov no feem ntau yog vim hais tias cov pa roj carbon monoxide tsis txaus thaum qhov muaj txiaj ntsig C / N piv qis, thiab cov sludge rov qab muaj ntau cov nitrate, uas siv COD ntau, ua rau tsis txaus phosphorus tso tawm hauv cheeb tsam anaerobic thiab ib qho loj ntawm nitrate. txo qis hauv qhov system phosphorus tshem tawm tus nqi.
Thaum C / N piv tau nce los ntawm 9 mus rau 14, tag nrho phosphorus tshem tawm tus nqi txo, tshwj xeeb tshaj yog thaum C / N piv tau ntau dua 11, tag nrho phosphorus tshem tawm tus nqi txo yuav luag linearly.
Qhov no yog vim hais tias nyob rau hauv ib tug kuj siab organic load, cov organic teeb meem nyob rau hauv lub influent tsis tuaj yeem siv tag nrho los ntawm phosphorus accumulating cov kab mob nyob rau hauv anaerobic seem, thiab cov seem ntawm cov organic teeb meem yuav txhawb txoj kev loj hlob ntawm cov kab mob polysaccharide, uas yuav ua rau tsub zuj zuj. ntawm activated sludge. Qhov feem pua ntawm cov kab mob phosphorus txo qis, uas cuam tshuam rau kev tshem tawm phosphorus.
Qhov cuam tshuam C / N piv tsis tshua muaj txiaj ntsig rau phosphorus tshem tawm cov nyhuv ntawm AO txheej txheem, feem ntau vim tias cov phosphorus tshem tawm los ntawm cov txheej txheem AO tsuas yog los ntawm kev sib xyaw ntawm cov kab mob, thaum C / N piv tsis tshua muaj txiaj ntsig ntawm kev sib xyaw.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com