Sau! Aeration Tank Kev khiav hauj lwm thiab kev saib xyuas(Part 1)
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
1. Tsib yam tseem ceeb ntawm kev niaj hnub saib xyuas ntawm aeration tank dej kom tsawg
1.1 Kub
1.2 PH nqi
1.3 COD thiab BOD5
1.4 Ammonia nitrogen thiab phosphate
1.5 Cov tshuaj lom
2. niaj hnub saib xyuas qhov project ntawm cov kua sib xyaw hauv aeration tank
2.1 Yuav ua li cas tswj MLSS lossis MLVSS tus nqi ntawm lub tank aeration?
2.2 Dab tsi yog qhov sludge settling ratio (SV) ntawm aeration tank sib tov? Lub luag haujlwm yog dab tsi?
2.3 Dab tsi txawv txav tshwm sim tshwm sim thaum ntsuas tus nqi SV? Vim li cas?
2.4 Sludge Volume Index (SVI) yog dab tsi?
2.5 Dab tsi yog vim li cas rau qhov nce ntawm SVI tus nqi ntawm cov aeration tank sib tov?
3. Kev tswj hwm ntawm aeration tank - ua npuas ncauj teeb meem
3.1 Brown-daj ua npuas ncauj
3.2 grey-dub ua npuas ncauj
3.3 Dawb ua npuas ncauj
3.4 Xim ua npuas ncauj
4. Kev tswj hwm ntawm aeration tank - sludge expansion
4.1 Cov xwm txheej ib puag ncig uas ua rau kev nthuav dav ntawm cov kab mob filamentous hauv cov activated sludge yog:
4.2 Cov xwm txheej thiab ua rau muaj kev nthuav dav ntawm cov kab mob uas tsis yog-filamentous
4.3 Kev ntsuas los tswj sludge bulking hauv aeration tank
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
1. Tsib yam tseem ceeb ntawm kev niaj hnub saib xyuas ntawm aeration tank dej kom tsawg
1.1 Kub
Qhov ntsuas kub zoo tshaj plaws rau kev ua haujlwm physiological ntawm aerobic activated sludge microorganisms yog 15-30 degree . Feem ntau, thaum dej kub qis dua 10 degree lossis siab dua 35 degree, kev ua haujlwm ntawm aerobic activated sludge yuav raug cuam tshuam. Nws txawm nres kiag li thaum qhov kub siab tshaj 40 degree lossis qis dua 5 degree.
Nyob rau hauv ib qho chaw, nrog rau qhov nce ntawm qhov kub thiab txias, txawm hais tias nws tsis tsim nyog rau kev hloov cov pa oxygen rau hauv dej, nws tuaj yeem ua rau kom muaj kev cuam tshuam ntawm biochemical thiab tus nqi ntawm microbial proliferation. Txawm li cas los xij, thaum qhov kub nce siab tam sim ntawd thiab tshaj qhov txwv, qhov kev puas tsuaj tsis tuaj yeem tshwm sim. Hauv qhov sib piv, qhov cuam tshuam ntawm qhov kub thiab txias ntawm cov kab mob me me, thiab kev puas tsuaj feem ntau tsis tshwm sim.
Yog tias qhov kub ntawm cov dej txo qis qis, cov kab mob hauv cov activated sludge tuaj yeem maj mam hloov mus rau qhov kev hloov no. Los ntawm kev ntsuas xws li txo cov load, nce cov pa oxygen concentration, thiab ncua sij hawm aeration, qhov kev kho mob zoo dua tuaj yeem ua tiav.
Yog li ntawd, hauv kev ua haujlwm tiag tiag, nws yog ib qho tsim nyog yuav tsum tau them sai sai rau qhov kev hloov pauv sai ntawm cov dej kub, tshwj xeeb tshaj yog qhov kub ntawm cov dej kub. Txhawm rau tiv thaiv cov dej khib nyiab uas muaj dej kub siab los ntawm kev cuam tshuam rau kev kho mob aerobic, kev kho cua txias yuav tsum tau ua.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
1.2 PH nqi
Qhov zoo tshaj PH rau cov kab mob activated sludge yog nyob nruab nrab ntawm 6.5 thiab 8.5. Thaum tus nqi PH poob qis dua 4.5, tag nrho cov protozoa hauv cov activated sludge yuav ploj mus, thiab cov dej num ntawm cov kab mob feem ntau yuav raug cuam tshuam.
Thaum tus nqi PH ntau dua 9, tus nqi metabolic ntawm cov kab mob yuav cuam tshuam loj heev, cov kab mob micelles yuav tawg, thiab cov sludge bulking kuj tshwm sim. Thaum PH tus nqi ntawm cov dej phwj yog siab tshaj 10 los yog qis dua 5, ua ntej nkag mus rau hauv lub aeration tank, acid-base neutralization yuav tsum tau nqa tawm los kho tus nqi PH, thiaj li hais tias tus nqi PH ntawm cov dej phwj nkag mus rau hauv lub aeration tank yog nyob rau hauv lub aeration tank. tsawg kawg ntawm 6-9.
Cov activated sludge sib tov nws tus kheej muaj qee yam cuam tshuam rau kev hloov pauv ntawm PH tus nqi, vim tias kev ua haujlwm metabolic ntawm cov kab mob aerobic tuaj yeem hloov PH tus nqi ntawm nws qhov chaw ua haujlwm. Piv txwv li, kev siv nitrogen-muaj cov tebchaw los ntawm aerobic microorganisms tsim cov kua qaub vim denitrification, uas txo cov PH nqi ntawm ib puag ncig; thiab alkaline acids yog tsim los ntawm decarboxylation, uas yuav ua rau kom tus nqi PH. Yog li ntawd, tom qab lub sij hawm ntev ntawm domestication, activated sludge txoj kev kuj tuaj yeem kho cov dej phwj tuaj nrog qee yam acidity lossis alkalinity. Tsis tas li ntawd, alkalinity ntawm dej phwj nws tus kheej muaj qee yam cuam tshuam rau qhov txo qis ntawm PH nqi.
Txawm li cas los xij, thaum PH tus nqi ntawm cov dej phwj hloov tam sim ntawd, piv txwv li, thaum cov dej phwj alkaline nkag mus rau hauv lub tshuab hluav taws xob sludge uas tau hloov mus rau ib puag ncig acidic, nws yuav muaj kev cuam tshuam rau cov kab mob hauv nws, thiab tej zaum yuav ua rau kev ua haujlwm ib txwm muaj. tag nrho qhov system.
Yog li ntawd, seb cov kua qaub-puag yog nruab nrab yog nyob ntawm qhov teeb meem tiag tiag. Yog tias PH tus nqi ntawm cov dej phwj nkag mus rau hauv lub tshuab ua kom cov sludge tsis hloov pauv ntau, tshwj xeeb tshaj yog thaum tsuas muaj ib qho dej acidic me ntsis lossis dej alkaline me ntsis, feem ntau tsis tsim nyog. Kev kho neutralization, thiab thaum tus nqi PH hloov pauv zoo heev, kev kho nruab nrab yuav tsum tau ua ua ntej los kho tus nqi PH mus rau nruab nrab.
Sau los ntawm: Jasmine
Contact email:Kate@aquasust.com
1.3 COD thiab BOD5
Tsis muaj teeb meem dab tsi tau txais txoj kev siv cov sludge, cov organic load uas lub aeration tank tuaj yeem dais muaj qee qhov txwv. Yog tias qhov kev txwv dhau lawm, kev ua haujlwm ntawm lub aeration tank yuav nyuaj rau lav. Rau qhov khiav aeration tank, tus nqi siab tshaj ntawm BOD5 nyob rau hauv lub zog yog tsau. Vim lub sij hawm ntev ntawm BOD5 tsom xam, COD tsom xam cov txiaj ntsig tau siv los coj kev tsim khoom.
Thaum cov organic load ntawm cov dej influent ntawm lub aeration tank tshaj tus qauv, kev ntsuas xws li txo cov dej influent, ua rau cov sludge rov qab txaus, thiab kev txhim kho cov pa oxygenation efficiency yuav tsum tau noj tam sim ntawd kom tsis txhob muaj kev cuam tshuam rau tag nrho cov theem nrab kev kho mob lom system thiab xyuas kom cov effluent zoo.
Yog tias tus nqi COD ntawm cov dej muaj txiaj ntsig tsawg, kev ntsuas yuav tsum tau ua tam sim ntawd txhawm rau nce cov dej muaj zog, txo cov sludge rov qab los, txo cov kiv cua, txo qhov ceev ntawm lub tshuab nqus dej, thiab lwm yam, kom txo cov pa oxygenation efficiency. , kom tsis txhob muaj hluav taws xob pov tseg.
Sau los ntawm: Jasmine
Contact email:Kate@aquasust.com
1.4 Ammonia nitrogen thiab phosphate
Raws li txoj cai, cov kev cai ntawm cov kab mob rau nitrogen thiab phosphorus yuav tsum tau xam raws li BOD5: N: P - 100: 5: 1, tab sis qhov piv ntawm BOD5 rau nitrogen thiab phosphorus nyob rau hauv lub aeration tank ntawm qhov tseeb activated sludge kev kho mob system. Feem ntau Hauv qab no tus nqi, lub kaw lus tuaj yeem ua haujlwm ib txwm.
Cov ntsiab lus ntawm nitrogen thiab phosphorus sib txawv heev nyob ntawm seb hom dej khib nyiab yuav tsum tau kho. Qee cov dej phwj tuaj muaj cov ntsiab lus nitrogen thiab phosphorus siab. Yog tsis muaj dephosphorization thiab nitrogen tshem tawm, nitrogen thiab phosphorus cov ntsiab lus ntawm cov effluent los ntawm lub thib ob sedimentation tank yuav tshaj tus qauv. Rau cov dej phwj uas tsis tshua muaj nitrogen thiab phosphorus cov ntsiab lus, yog tias qee qhov nyiaj ntawm nitrogen thiab phosphorus tsis tuaj yeem rov ua dua rau lub sijhawm, kev ua haujlwm ntawm cov kab mob yuav raug txwv, thiab COD thiab BOD5 ntawm cov dej ntws tawm los ntawm cov dej xau thib ob yuav tsis raug lees paub. ua tau raws li tus qauv.
Thaum soj ntsuam nrog cov dej khib nyiab uas muaj nitrogen tsawg heev thiab phosphorus cov ntsiab lus, rau lub tank khiav aeration, cov ntsiab lus ntawm ammonia nitrogen thiab phosphate nyob rau hauv lub influent ntawm lub aeration tank yog li ntawm 10mg / L thiab 5mg / L feem, uas yuav txaus siab rau cov tov tov. Microorganisms xav tau nitrogen thiab phosphorus. Yog hais tias cov ntsiab lus ntawm ammonia nitrogen thiab phosphate nyob rau hauv lub influent ntawm lub aeration tank yog qis dua qhov saum toj no qhov tseem ceeb rau lub sij hawm ntev, qhov ntau npaum ntawm nitrogen thiab phosphorus yuav tsum tau nce nyob rau hauv lub sij hawm.
Sau los ntawm: Jasmine
Contact email: Kate@aquasust.com
1.5 Cov tshuaj lom
Rau cov dej khib nyiab tshwj xeeb, hom tshuaj lom neeg feem ntau tsis hloov pauv, tab sis cov ntsiab lus thiab cov dej ntim yog qhov nyuaj rau qhov tsis tu ncua. Ntxiv nrog rau qhov yuav tsum tau ua cov kev kho mob tseem ceeb xws li kev hloov pauv homogenization, cov ntsiab lus ntawm cov tshuaj lom nyob rau hauv lub zog ntawm lub aeration tank yuav tsum tau saib xyuas thiab tswj.
Tom qab lub domestication ntawm activated sludge tiav lawm, lub siab tshaj plaws txwv ntawm cov tshuaj lom nyob rau hauv lub influent dej uas muaj feem xyuam rau lub biochemical system yuav tsum tau txiav txim raws li lub degree ntawm adaptation ntawm tov tov rau cov tshuaj lom nyob rau hauv lub influent dej thiab ua ke nrog kev khiav hauj lwm kev. .
Yog hais tias cov ntsiab lus ntawm cov tshuaj lom nyob rau hauv lub influent ntawm lub aeration tank ntau tshaj qhov txwv rau lub sij hawm ntev, kev ntsuas xws li txo cov dej influent, ua kom cov sludge rov qab ntws, thiab kev txhim kho cov pa oxygenation efficiency yuav tsum tau noj kom tsis txhob muaj kev cuam tshuam rau kev kho mob. mus rau microbial lom ntawm cov tov tov.
Sau los ntawm: Jasmine
Contact email:Kate@aquasust.com