Vim muaj kev hloov pauv ntawm qee yam, qhov ua kom cov sludge zoo dhau los ua lub teeb, nthuav dav, thiab kev daws teeb meem tsis zoo, tus nqi SVI tseem nce ntxiv, thiab cov av nkos-dej sib cais tsis tuaj yeem nqa tawm hauv lub tank thib ob sedimentation.Cov sludge theem ntawm cov sedimentation tank thib ob tseem nce ntxiv, thiab thaum kawg cov sludge poob, thiab MLSS concentration hauv lub tank aeration yog txo qis, yog li rhuav tshem cov sludge hauv kev ua haujlwm ib txwm muaj.Qhov no tshwm sim yog hu ua sludge bulking.Sludge bulking yog ib qho tshwm sim txawv txav nyob rau hauv cov txheej txheem activated sludge.
Cov txheej txheem sludge tam sim no tau siv dav hauv kev kho dej khib nyiab.Txoj kev no tau ua tiav cov txiaj ntsig zoo hauv kev kho ntau yam dej khib nyiab hauv nroog xws li dej phwj hauv nroog, ntawv ua thiab dyeing cov dej khib nyiab, catering cov dej khib nyiab thiab cov dej khib nyiab.Txawm li cas los xij, muaj ib qho teeb meem tshwm sim hauv kev kho sludge, uas yog, sludge yog ib qho yooj yim o thaum ua haujlwm.Sludge bulking feem ntau yog muab faib ua cov kab mob filamentous hom sludge bulking thiab non-filamentous kab mob hom sludge bulking, thiab muaj ntau ntau yam rau nws tsim.Kev puas tsuaj ntawm sludge bulking yog qhov hnyav heev, thaum nws tshwm sim, nws nyuaj rau tswj, thiab lub sijhawm rov qab los yog ntev.Yog tias kev tswj xyuas tsis raug coj mus rau lub sijhawm, sludge poob yuav tshwm sim, ua rau kev ua haujlwm ntawm lub tank aeration, uas ua rau lub cev qhuav dej ntawm tag nrho cov kev kho mob.
Ntxiv cov calcium chloride tuaj yeem cuam tshuam kev loj hlob ntawm cov kab mob filamentous, uas yog qhov tsim nyog rau kev tsim cov kab mob micelles, thiab txhim kho kev daws teeb meem ntawm sludge.Calcium chloride yuav decompose thiab tsim chloride ions tom qab yaj hauv dej.Chloride ions muaj kev ua kom tsis muaj menyuam thiab tua kab mob hauv dej, uas tuaj yeem tua ib feem ntawm cov kab mob filamentous thiab inhibit sludge o los ntawm cov kab mob filamentous.Tom qab tso tseg qhov sib ntxiv ntawm cov tshuaj chlorine, cov tshuaj chloride ions kuj tuaj yeem nyob hauv dej tau ntev, thiab cov kab mob filamentous tsis loj hlob ntau dhau nyob rau lub sijhawm luv luv, thiab cov kab mob tseem tuaj yeem tsim cov floc ntom ntom, uas tseem qhia tau hais tias qhov sib ntxiv ntawm calcium chloride tuaj yeem cuam tshuam kev loj hlob ntawm cov kab mob filamentous thiab muaj txiaj ntsig zoo ntawm kev daws cov sludge o.
Ntxiv cov calcium chloride tuaj yeem tswj cov sludge o sai thiab zoo, thiab SVI ntawm cov sludge activated tuaj yeem txo tau sai.SVI txo qis ntawm 309.5mL / g rau 67.1mL / g tom qab ntxiv calcium chloride.Yog tias tsis ntxiv calcium chloride, SVI ntawm activated sludge kuj tuaj yeem raug txo los ntawm kev hloov cov kev ua haujlwm, tab sis tus nqi txo qis dua.Ntxiv calcium chloride tsis muaj kev cuam tshuam rau COD tshem tawm tus nqi, thiab COD tshem tawm tus nqi ntawm kev ntxiv calcium chloride tsuas yog 2% qis dua qhov tsis ntxiv calcium chloride.
Post lub sij hawm: Jan-11-2024
