Brownish- daj ua npuas ncauj
1. Phenomenon Nqe lus piav qhia: Cov npuas dej pib me me hauv qhov ntau, tshwm nyob ze ntawm thaj chaw aeration thiab maj mam dissipating radially. Nws ces accumulates nyob rau hauv cov ces kaum, tso saib ib tug brownish - xim daj uas phim cov xim ntawm cov activated sludge thaum lub sij hawm tsim. Thaum lub sij hawm tag nrho cov txheej txheem, cov npuas dej yog qhov tsis yooj yim, tiv thaiv kom tsis txhob muaj qhov cuam tshuam loj thiab tsim cov khoom loj hauv lub sijhawm luv luv.
2. Ua rau Kev Ntsuam Xyuas: Cov activated sludge yog nyob rau hauv lub xeev laus. Qee cov activated sludge tau tawg vim kev laus thiab tseem raug tshem tawm hauv cov activated sludge sib tov. Nyob rau hauv aeration, cov khib nyiab no adheres tusyees rau cov npuas dej, ncua lub sij hawm nws yuav siv sij hawm rau cov npuas dej tawg, yog li tsim ib tug tej yam kev mob rau ua npuas ncauj.
3. Txheej Txheem Txiav Txim: Hom kev ua npuas dej no qhia tau tias cov sludge nyob hauv lossis yuav nkag mus rau theem kev laus ntawm activated sludge.
A) Kev sib piv ntawm Activated Sludge: Saib xyuas qhov sib piv ntawm cov activated sludge yog ib txoj hauv kev tseem ceeb los txiav txim siab seb cov activated sludge puas muaj hnub nyoog. Paub meej tias seb qhov sib piv qis dhau lawm, seb qhov chaw ua kom cov sludge yog xim daj tsaus, thiab seb qhov kev daws teeb meem nrawm dhau, ua ke nrog cov xim daj - daj ua npuas dej ua rau ntawm cov kua dej, tuaj yeem muab qhov kev ntsuas tseeb ntawm seb cov activated sludge puas muaj hnub nyoog.
B) SVI Tus Nqi: Txawm hais tias tus nqi SVI yog qhov qhia tau zoo ntawm qhov xoob ntawm cov activated sludge, nws kuj muaj cov haujlwm ntawm kev txiav txim siab seb cov activated sludge puas muaj hnub nyoog. Thaum tus nqi SVI qis dua 40, lub tshuab ua kom cov sludge feem ntau muaj hnub nyoog. Ua ke nrog cov xim av xim av - daj ua npuas dej ua rau ntawm cov kua dej, qhov no tuaj yeem muab qhov kev ntsuam xyuas tseeb ntawm seb cov activated sludge puas muaj hnub nyoog.
C) Cov txiaj ntsig soj ntsuam Microscopic: Kev soj ntsuam microscopic tuaj yeem kuaj pom muaj hnub nyoog activated sludge. Qhov tseem ceeb yog qhov ceev ntawm flocs thiab qhov kev faib ua feem ntawm metazoans. If the observed flocs are relatively dense and there are a large number of metazoans, combined with the brownish-yellow foam on the liquid surface, it can be determined whether the activated sludge is in the aging stage.
Greyish-dub ua npuas ncauj
1. Phenomenon Description: Qhov ntau, txheej txheem tsim, tsub zuj zuj, thiab fragility ntawm cov npuas yog zoo ib yam li cov xim brownish - daj ua npuas ncauj, tab sis nws cov xim muaj cov khoom siv dub, thiab cov khoom tsim los kuj greyish -dub. Cov activated sludge nyob rau hauv tag nrho cov kev kho mob lom kuj tshwm me ntsis greyish -dub.
2. Ua rau Kev Ntsuas: Lub tshuab ua kom cov sludge nyob rau hauv lub xeev anoxic. Anoxic tej yam kev mob tuaj yeem ua rau cov tshuaj anaerobic hauv zos hauv cov activated sludge. Qhov no ua rau cov activated sludge, uas yog Ameslikas nyob rau hauv lub xeev aerobic, tuag thaum lub sij hawm hloov no, thiab nws yuav ua raws li cov npuas uas tsim thaum lub sij hawm aeration.
Yog li ntawd, yog tias peb pom greyish -dub ua npuas ncauj, ntxiv rau kev lees paub tias puas muaj cov dej khib nyiab dub, qhov tseem ceeb tshaj plaws kom paub meej yog seb puas muaj cov xwm txheej hauv cheeb tsam anaerobic tshwm sim los ntawm tsis txaus aeration hauv lub tank kho lom.
3. Txheej Txheem Kev Txiav Txim: Greyish- cov npuas dej dub feem ntau qhia tau tias muaj anoxic lossis anaerobic lub xeev nyob rau hauv lub tshuab ua kom cov sludge. Kev lees paub ntawm cov txheej txheem tswj xyuas cov txheej txheem yuav tsum tau tsom mus rau qhov no. Thaum greyish- ua npuas ncauj dub tshwm sim, kev txiav txim siab ntawm DO (solved oxygen) tus nqi yog qhov tseem ceeb.
Txoj hauv kev zoo tshaj plaws kom paub meej tias lub tshuab ua kom cov sludge nyob rau hauv lub xeev anoxic lossis anaerobic yog los ntawm - qhov chaw sim siv lub ntsuas pa oxygen. Ib qho kev ua yuam kev ntau tus neeg ua haujlwm yog txiav txim siab tag nrho cov txheej txheem oxygen yaj ntawm cov kab mob lom los ntawm kev sim tsuas yog ib qho taw qhia, uas yog ib qho - ib sab mus kom ze.
Txhawm rau zam qhov no, ntawm - qhov chaw sim yuav tsum tau ua ntawm cov ntsiab lus sib npaug sib npaug thoob plaws tag nrho cov kab ke kev kho mob lom. Tsuas yog nyob rau hauv txoj kev no tuaj yeem txheeb xyuas thaj chaw uas tsis muaj oxygen txaus. Yog tias cov pa oxygen yaj nyeem ntawv qis dua 0.5 ppm ntawm qee qhov chaw, peb yuav tsum tsom mus rau peb qhov kev tshawb nrhiav ntawm cov chaw no.
Ua Npuas Ncauj
1. Phenomenon Description
Ua npuas ncauj dawb tuaj yeem tshwm sim los ntawm ntau yam, tab sis feem ntau yog vim kev thauj khoom ntau dhau, dhau - aeration, thiab detergent inflow. Lub viscosity ntawm cov npuas dej tuaj yeem muab cov ntaub ntawv tseem ceeb hauv kev sib txawv ntawm qhov ua rau cov npuas dej dawb.
Feem ntau, tuab, yooj yim tawg ua npuas ncauj yog feem ntau pom thaum qhib sludge yog overloaded. Hauv qhov no, ua npuas ncauj yog ci dawb thiab muaj cov khoom tsim zoo - nce. Conversely, tuab, yooj yim tawg ua npuas ncauj yog feem ntau pom thaum activated sludge tshaj - aerated. Hauv qhov no, ua npuas ncauj yog npub dawb, muaj cov khoom tsis zoo- nce, thiab tsuas yog nyob hauv zos xwb. Kev nkag mus ntawm cov tshuaj detergents kuj tuaj yeem ua rau cov npuas dej dawb vim tias muaj cov tshuaj ntxuav tes ua rau cov dej nro, thaum kawg ua rau ua npuas dej.
2. Kev Txiav Txim Txheej Txheem Lub cim ntawm cov npuas dej dawb yog qhov tseem ceeb vim tias muaj cov khoom siv hluav taws xob ntau dhau, kev ua kom aeration ntau dhau, thiab cov khoom siv detergents.
A) Kev sib raug zoo ntawm F/M tus nqi thiab ua npuas ncauj dawb Peb paub tias F/M piv (khoom noj- rau- kab mob sib kis) yog qhov taw qhia rau kev txiav txim siab rau qhov ua kom cov sludge load. Yog tias tus nqi F / M siab dhau (ntau dua 0.5), thiab ntau qhov tuab, ua npuas ncauj dawb, peb tuaj yeem txiav txim siab tias cov activated sludge yog qhov tseeb ntawm kev ua haujlwm siab.
B) Kev sib raug zoo ntawm DO tus nqi thiab ua npuas ncauj dawb dhau - aeration tuaj yeem tsim tau ntau cov npuas dawb. Txawm hais tias ib txwm aeration tus nqi yuav tsis ua npuas tsim nyob rau hauv cov kab mob lom thaum lub npuas viscosity tsawg, nyob rau hauv siab aeration tus nqi ntau heev, ib co activated sludge yuav disintegrate thiab yaj, ua rau ib tug nce nyob rau hauv cov organic teeb meem cov ntsiab lus nyob rau hauv lub activated sludge supernatant. Qhov no yog ib qho laj thawj rau kev tsim ua npuas dej nyob rau hauv siab aeration tus nqi.
Yog li ntawd, thaum ua kom muaj cov pa oxygen rau lub tshuab ua kom cov sludge, nws yog ib qho tseem ceeb kom txo qis tus nqi aeration. Qhov no tsis tsuas yog txo cov npuas tsim tab sis kuj txo cov kev siv hluav taws xob thiab txo cov nqi khiav lag luam. Feem ntau, DO tus nqi ntawm lub qhov hluav taws xob aeration yog tswj ntawm 1-3 mg / L. Yog tias qhov ntsuas aeration nce mus rau 5.0 mg / L, qhov cuam tshuam tsis zoo ntawm lub tshuab ua kom cov sludge yuav yog qhov tseem ceeb.
C) Teeb meem nrog kev nkag mus ntawm cov tshuaj foaming Dhau li ntawm kev kho mob ntau dhau thiab dhau - aeration, cov dej ntws ntawm cov tshuaj foaming mus rau hauv cov kab mob lom kuj tuaj yeem ua rau ua npuas dej hauv lub tshuab ua kom cov sludge. Ib qho laj thawj yog qhov nkag ntawm cov tshuaj detergents los yog surfactants mus rau hauv cov kab mob lom, uas, nyob rau hauv aeration, yuav sai sai tsim ib tug loj npaum li cas ntawm dawb npuas. Los ntawm kev saib xyuas tus nqi ntawm cov pa oxygen (DO) thiab cov sludge load ntawm cov kab mob lom thaum lub sijhawm ntawd, peb tuaj yeem ua pov thawj tias cov dej muaj txiaj ntsig zoo ua rau cov foaming ntawm lub tshuab ua kom cov sludge.