Daim ntawv qhia siv tau rau MBBR media filling ratios: cov ntsiab lus, kev txwv cov kua dej tom qab 67% qab nthab, pom zoo rau thaj chaw hauv nroog thiab cov chaw tsim khoom, thiab cov lus qhia hloov pauv npog hom tank, aeration, thiab cov dej hauv cheeb tsam.
Taw qhia
Qhov sib piv (tseem sau ua tus nqi sau lossis sau feem pua) yog ib qho ntawm cov lus nug feem ntau hauv MBBR tsim:
teem nws tsawg dhau thiab kev kho mob muaj peev xwm yuav luv luv; teeb nws siab dhau lawm thiab fluidization tuaj yeem cuam tshuam.
Hauv kev xyaum ua engineering, qhov sib piv ntawm MBBR media feem ntau yog tswj nyob rau hauv25%–67%(nyob ntawm seb hom xov xwm thiab lub tank configuration), nrog kev pom zoo sib txawv ntawm cov kev pom zoo rau kev siv hauv nroog thiab kev lag luam.
Qhov Filling ratio yog dab tsi thiab yog vim li cas 67% feem ntau kho raws li lub qab nthab
Qhov sib piv yog qhov feem pua ntawm cov reactor qhov ntim tau zoo nyob los ntawm qhov ntim ntim ntawm cov xov xwm. Nws txiav txim siab ob qho tag nrho cov xov xwm muaj rau kev loj hlob ntawm biofilm thiab seb cov xov xwm puas tuaj yeem cuam tshuam dawb hauv hydraulic thiab aeration rog.
Hauv cov phiaj xwm tiag tiag, qhov sib piv ntawm qhov filling yog ntsuas raws li kev tshaj tawm qhov ntim ntim: cov qauv xov xwm tau thauj khoom mus rau hauv lub tog raj kheej lossis cov thawv calibrated, maj mam tapping kom txog thaum lub ntim stabilizes, thiab tom qab ntawd muab piv nrog lub tank ntim. Dimensional variation ntawm batches tuaj yeem cuam tshuam qhov kev ntsuas, yog li tsim, kev yuav khoom, thiab kev siv tshuaj yuav tsum raug xam raws li qhov sib txawv ntawm qhov chaw nyob qhov twg.
Fluidization xav tau qhov chaw dawb txaus. Rau cylindrical K- hom xov xwm (K1 / K3 / K5), kev paub txog kev tsim vaj tsev qhia tau hais tias ib zaug qhov kev sib xyaw ua ke ntau tshaj li ntawm 67%, cov txheej txheem xov xwm mus txog qhov ntim ntom ntom: dej thiab cua npuas tawm tsam kom nkag mus, thiab thaj chaw nyob ruaj khov yuav tsim nyob ze ntawm lub tank hauv qab. Vim li no,67% yog dav kho raws li cov tswv yim engineering qab nthab rau tshem tawm xov xwm (tus nqi raug). Lub qab nthab sib txawv me ntsis nrog cov qauv xov xwm; porous sponge- hom xov xwm deform tau yooj yim dua thiab tuaj yeem mus txog qhov sib piv ntau dua hauv qee qhov xwm txheej, tab sis qhov no yuav tsum tau ua tib zoo xyuas.
Qhov cuam tshuam ntawm qhov sib faib ua kom tsawg dhau los yog siab dhau
2.1 Filling ratio tsawg dhau
Qhov zoo ntawm biofilm nto thaj chaw hauv lub tank tsis txaus, qhov ntim ntim ntim tau poob, thiab cov ntsuas cov dej ntws ua kom nyuaj;
Thaum cov xov xwm tsis tshua muaj siab, cov kua dej ua kom muaj zog heev, biofilm yooj yim dua sheared, thiab lub sij hawm tsim biofilm txuas ntxiv;
Kev nqis peev hauv lub tank ntim tsis tau siv tag nrho - retrofit tej yaam num siv nyiaj tsis muaj peev xwm nce;
Tshiab- tej yaam num tsim yuav raug yuam kom loj lub tank kom them nyiaj rau kev kho mob, nce pej xeem- cov nqi tsim kho thiab hneev taw.
2.2 Filling ratio siab dhau lawm
Media fluidization yog txwv, ntim cov chaw tuag tsim nyob rau hauv lub tank, loj hloov pauv deteriorates, thiab localized oxygen deficiency tshwm;
Kev siv hluav taws xob aeration nce: huab cua xav tau ntau ntxiv los tswj cov kua dej, ua kom tus nqi kho tsev;
Kev sib tsoo thiab kev puas tsuaj ntawm cov xov xwm sib zog, tso cov khoom hnyav dua ntawm cov ntxaij vab tshaus tuav, thaum lub neej kev pab cuam luv luv thiab kev saib xyuas siab loj hlob tuaj.
Ib qho kev xav tsis zoo nyob rau hauv cov haujlwm tiag tiag yog tias "qhov sib piv ntau dua ib txwm txhais tau tias muaj peev xwm kho tau ntau dua." Thaum qhov sib piv mus txog lub qab nthab fluidization, ntxiv ntau tshaj tawm tsis txhim kho tus nqi tshem tawm thiab tuaj yeem ua rau cov dej tsis zoo.
2.3 Yuav ua li cas txiav txim rau ntawm qhov chaw seb qhov filling ratio puas tsim nyog
Thaum lub sijhawm ua haujlwm, peb qhov kev kuaj xyuas sai pab: ua ntej, pom qhov pom ntawm lub xeev fluidization - cov xov xwm yuav tsum sib npaug ntawm lub tank saum npoo uas tsis muaj qhov pom tseeb ntawm qhov chaw ntim khoom; Thib ob, saib xyuas cov pa oxygen faib tawm - loj DO deviations thoob plaws lub tank qhia tias tsis zoo sib xyaw, uas yuav taw tes rau lub tank ntau dhau; thib peb, taug qab cov ntsuas effluent thiab biofilm thickness - yog tias cov biofilm tsis tu ncua nyias lossis sloughs nquag, qhov sib piv lossis aeration yuav xav tau kev hloov kho. Cov no yog kev khiav haujlwm-kev kuaj xyuas; qhov kev txiav txim zaum kawg ib txwm nyob ntawm dej -cov ntaub ntawv xeem zoo.
Pom zoo Filling Ratios rau Municipal thiab Industrial Scenarios
Qhov kev pom zoo rau txhua qhov xwm txheej yog nyob ntawm qhov muaj zog concentration, lub hom phiaj effluent standard, tank hom, thiab aeration method. Cov kab hauv qab no yog cov txiaj ntsig zoo xws li engineering; txhua qhov project tshwj xeeb yuav tsum tau lees paub los ntawm kev suav tsim.
|
Scenario |
Hom filling ratio |
Sau ntawv |
|
Cov dej khib nyiab hauv nroog (tshiab- tsim MBBR) |
30%–45% |
Ib txwm-lub zog muaj zog; balances nitrogen tshem tawm thiab fluidization |
|
Municipal qhib-sludge retrofit (hybrid) |
25%–40% |
Media coexist nrog sludge; qhov chaw sib tov yuav tsum tau khaws cia |
|
Muaj dej khib nyiab (siab COD: zaub mov / dej haus / pulp & ntawv) |
40%–60% |
Siab load; ntxiv dag zog rau huab hwm coj hloov thiab aeration yuav tsum tau |
|
Cov dej khib nyiab hauv kev lag luam (siab ammonia: tshuaj lom neeg / leachate) |
50%–67% |
Lub hom phiaj ntawm qhov chaw- chaw thau khoom; fluidization yuav tsum nruj me ntsis xyuas |
|
MBBR + MBR ua ke txheej txheem |
30%–50% |
Tus nqi tsim nyog rau theem pib MBBR |
Nco ntsoov tias qhov kev pom zoo ntau tsuas yog qhov pib. Tus nqi kawg yuav tsum raug kuaj xyuas tus nqi tsim khoom ntim ntim (hauv nroog raug 0.3-0.8 kg COD / (m³·d)) thiab lub hom phiaj effluent tus qauv: rau siab load thiab nruj qauv, coj mus rau sab sauv kawg ntawm ntau yam; rau qis load thiab lub zog- txuag qhov tseem ceeb, ua qhov qis kawg.
Kev hloov kho los ntawm Tank Hom, Aeration, thiab Regional Water Quality
Tank hom:
- ntsaws- cov tso tsheb hlau luam tsim muaj qhov loj ntawm cov gradients raws txoj hauv kev ntws, yog li lawv qhov sib xyaw ua ke feem ntau qis dua li cov tso tsheb hlau luam sib xyaw ua ke;
- multi-channel tanks tuaj yeem siv qhov sib txawv ntawm qhov sib txawv hauv cov channel sib txawv.
- Loading check: tom qab xaiv ib tug filling ratio, xyuas ob volumetric loading thiab nto - cheeb tsam chaw thau khoom kom paub meej tias lub tank ntim thiab media deg cheeb tsam txhua tus ua tau raws li lub hom phiaj tsim - kom tsis txhob txaus siab ib qho taw qhia thaum tshaj lwm qhov.
Aeration method:
- Cov haujlwm nyob sab Europe feem ntau siv lub tshuab cua tshuab nrog zoo - npuas diffusers, uas tuaj yeem txhawb nqa ntau dua qhov sib piv (40% - 55%);
- nto aerators lossis dav hlau aeration muab kev sib xyaw ua ke, yog li qhov qis kawg ntawm qhov ntau yog pom zoo.
Regional dej zoo:
- nyob rau sab hnub tuaj Asia, sov siab siab -turbidity influent tuaj yeem yooj yim coated xov xwm nrog cov khib nyiab tshem tawm; 25% -40% yog pom zoo ua ke nrog ntxiv dag zog rau pretreatment.
- Nyob rau hauv cov cheeb tsam txias sab qaum teb, kev ua liaj ua teb poob qis, yog li cov khoom ntim ntau dua feem ntau siv los them rau thaj chaw saum npoo av, ua ke nrog qhov kub thiab txias - kho kom raug.
- Nyob rau hauv EU, qhov twg influent concentrations yog tsawg, qhov filling ratio yuav tsum tau txo qis kom txuag tau lub zog muab cov qauv effluent tseem ua tau.
Kev ua raws cai thiab kev xa khoom:
- rau cov khoom xa tawm, CE/REACH (EU) lossis EPA-cov ntaub ntawv ntsig txog yuav tsum tau muab rau lub hom phiaj kev lag luam;
- rau cov haujlwm hauv Suav teb, GB qauv thiab cov qauv tsim qauv siv tau siv, thiab qhov kev sib sau ua tiav tau ua tiav los ntawm kev tsim qauv.
Retrofit tej yaam num yuav tsum tau soj ntsuam lub peev xwm tshaj ntawm cov uas twb muaj lawm aeration system kom tsis txhob muaj txaus aeration tom qab lub filling ratio yog nce.
Cov lus nug nquag nug (FAQ)
Q1: Puas yog qhov sib piv ntau dua ib txwm txhais tau tias muaj peev xwm kho tau ntau dua?
A: Tsis tas li. Nyob rau hauv qhov ntau qhov chaw uas cov kua dej nyob ib txwm muaj (piv txwv li, 25% -50%), nce qhov sib piv ntxiv qhov zoo ntawm biofilm nto thiab muaj peev xwm nce raws li; tab sis ze li ntawm 60% -67% fluidization yuav txwv, qhov chaw tuag nce, muaj peev xwm loj hlob qeeb lossis thim rov qab, thiab aeration zog noj nce siab.
Q2: Vim li cas thiaj li muaj ntau tus qauv tsim cap qhov sib piv ntawm 67%?
A: Nws yog ib txoj cai engineering ntawm tus ntiv tes xoo (tus nqi raug) muab los ntawm lub tshuab ua kua dej ntawm cov xov xwm cylindrical tshem tawm. Tshaj li qhov piv txwv no, cov dej thiab cua ntawm cov xov xwm raug compressed, ua rau cov dej tsis sib xws tsis yooj yim los tswj. Yog tias ib qhov project xav tau kev tshaj xov xwm ntau dua, lub tank teeb tsa lossis cov txheej txheem sib xyaw yuav tsum tau rov ua dua - ntsuas dua li tsuas yog ntxiv cov xov xwm ntxiv.
Q3: Yuav ua li cas txog qhov project retrofit txiav txim siab nws qhov sib piv?
A: Retrofit tej yaam num yog txwv los ntawm ob qho tib si lub tank ntim uas twb muaj lawm thiab lub aeration system lub peev xwm. Ua ntej txheeb xyuas seb cov khoom siv aeration tam sim no puas tuaj yeem txhawb nqa cov kua dej thiab cov pa oxygen hloov mus rau ntawm lub hom phiaj filling piv, tom qab ntawd khiav kev sim ntsuas hauv qhov pom zoo; yog tias tsim nyog, siv tau cov ntawv txuas biofilm thiab tshem tawm cov nqi hauv kev sim ua ntej ua kom nce mus txog tus nqi engineering.
Xaus
Tsis muaj ib qho -loj- haum- tag nrho qhov sib piv. Tus nqi suab sib npaug qhov kev xav tau ntawm kev thauj khoom ntxiv rau lub tank / aeration peev xwm txwv ntxiv rau cov dej hauv cheeb tsam- kev kho kom zoo. Cov haujlwm hauv nroog feem ntau ua haujlwm ntawm 25%–50%, thaum siab -Load industrial scenarios tuaj yeem ncav cuag 60%–67% - cov txheej txheem tseem ceeb yog seb cov xov xwm puas tuaj yeem tswj tau cov kua dej li qub.
Txhawm rau ua kom tiav - cov lus pom zoo sib piv raws li koj qhov tshwj xeeb cov dej zoo thiab cov dej tank, hu rauAquaSustpab neeg technical rau ib daim ntawv thov tsim nyog.