Dab tsi yog yaj oxygen thiab yuav saib xyuas nws li cas
Kev kho mob lom tam sim no hauv kev kho dej khib nyiab feem ntau yog siv cov txheej txheem kev kho anaerobic thiab aerobic. Dissolved oxygen plays lub luag haujlwm tseem ceeb hauv kev kho dej khib nyiab lom neeg. Kev tsis tsim nyog lossis kev hloov pauv ntau dhau ntawm qhov ntsuas no tuaj yeem ua rau muaj kev cuam tshuam rau kev ua haujlwm ntawm cov sludge, yog li cuam tshuam rau kev kho mob. Yog li ntawd, hauv cov txheej txheem kho biochemical tiag tiag, nws yog ib qho tsim nyog yuav tsum nruj me ntsis tswj cov ntsiab lus ntawm yaj oxygen.
1. Txheej txheem cej luam ntawm yaj oxygen
Dissolved oxygen (DO) yog ib qho parameter uas qhia txog qhov concentration ntawm cov pa hauv cov kua dej, thiab yog cov pa oxygen dawb yaj hauv dej.
Chav tsev ntawm cov pa yaj yog mg / L, qhia hauv milligrams ntawm oxygen ib liter dej. Tus nqi ntawm cov pa oxygen yaj hauv dej yog qhov qhia txog kev ua kom huv ntawm tus kheej ntawm cov dej. High yaj oxygen yog qhov zoo rau kev degradation ntawm ntau yam kuab paug nyob rau hauv dej, yog li ua kom ceev purification ntawm dej; Ntawm qhov tsis sib xws, cov pa oxygen tsawg ua rau qeeb qeeb ntawm cov pa phem hauv dej.
2. Cov yam ntxwv cuam tshuam rau cov pa oxygen yaj
Cov ntsiab lus oxygen yaj hauv dej yog cuam tshuam los ntawm ob yam: ib qho yog kev siv cov pa oxygen uas txo DO, nrog rau kev siv cov pa oxygen ntawm aerobic organic teeb meem degradation thiab kev siv cov pa oxygen siab heev; Lwm hom yog cov nyhuv reoxygenation uas nce DO, feem ntau suav nrog kev sib cais ntawm cov pa oxygen hauv huab cua, aeration txoj kev, thiab lwm yam. Kev sib nrig sib loj hlob thiab poob ntawm ob qhov teebmeem no ua rau muaj kev hloov pauv ntawm cov pa oxygen hauv dej.
Cov xwm txheej ib puag ncig uas cuam tshuam rau cov ntsiab lus ntawm cov pa oxygen hauv dej muaj xws li dej kub, oxygen ib nrab siab, salinity, thiab lwm yam.
1. Dej kub
Thaum cov pa oxygen ib nrab siab thiab ntsev cov ntsiab lus tas li, cov ntsiab lus saturation ntawm cov pa oxygen txo qis nrog qhov nce ntawm cov dej kub. Cov ntsiab lus saturation ntawm yaj cov pa oxygen ntawm qhov kub tsis tshua muaj qhov sib txawv ntawm qhov kub thiab txias.
2. Cov ntsiab lus ntsev
Thaum cov dej kub thiab cov pa oxygen ib nrab siab tas li, qhov siab dua cov ntsev cov ntsiab lus ntawm dej, qhov me dua cov ntsiab lus ntawm cov pa oxygen hauv dej. Cov ntsiab lus ntsev ntawm seawater yog ntau dua li cov dej tshiab. Raws li cov xwm txheej zoo ib yam, cov ntsiab lus saturation ntawm yaj oxygen hauv dej hiav txwv yog qis dua li hauv dej tshiab. Qhov sib txawv ntawm cov ntsiab lus ntsev nyob rau hauv lub cev dej qab zib yog heev me me, yog li cov ntsiab lus ntsev ntawm cov ntsiab lus saturation ntawm yaj oxygen tsis tseem ceeb, thiab tuaj yeem kwv yees kwv yees raws li cov ntsiab lus saturation hauv dej ntshiab.
3. Ib nrab siab ntawm oxygen
Thaum cov dej kub thiab ntsev cov ntsiab lus tsis tu ncua, cov ntsev ntsev cov ntsiab lus ntawm cov pa oxygen hauv dej nce ntxiv nrog qhov nce ntawm cov pa oxygen ib feem ntawm cov kua dej.
Kev soj ntsuam cov pa oxygen yaj (DO)
Vim tias muaj kev cuam tshuam ntawm cov pa oxygen yaj mus rau yam xws li oxygen, qhov kub thiab txias, thiab cov av noo hauv huab cua, cov cuab yeej tshawb nrhiav online lossis cov khoom siv hluav taws xob uas siv tau yooj yim siv rau kev saib xyuas ntawm qhov chaw. Thaum kuaj, tag nrho cov aeration tank yuav tsum tau muab faib ua ob peb cheeb tsam, thiab cov pa oxygen soj ntsuam qhov tseem ceeb nyob rau hauv tag nrho cov cheeb tsam yuav tsum tau txheeb xyuas kom nkag siab txog kev faib cov pa oxygen nyob rau ntau theem thiab lub sij hawm cov ntsiab lus ntawm lub system. Qhov no muaj txiaj ntsig zoo rau tag nrho kev nkag siab ntawm cov kab ke tom ntej thiab kev tshuaj xyuas ntawm kev ua haujlwm sludge faults. Yog tias tsis muaj qhov kev kuaj pom zoo li no, cov pa oxygen yaj ntawm qhov hluav taws xob ntawm lub tank aeration tuaj yeem raug saib xyuas raws li qhov kawg tshwm sim ntawm cov txheej txheem organic degradation hauv lub tshuab ua kom cov sludge. Raws li ib txwm muaj, cov nyhuv ntawm oxygenation nyob rau lub caij ntuj no yog qhov zoo dua li lub caij ntuj sov. Qhov laj thawj tseem ceeb yog tias cov dej kub hauv lub caij ntuj no qis dua thiab qhov saturation ntawm yaj oxygen yog siab dua. Ntawm qhov tsis sib xws, qhov saturation ntawm yaj oxygen yog qis dua nyob rau lub caij ntuj sov.
