Los ntawm kev sib ntxiv ntawm polydimethyldiallylammonium chloride (PDMDAAC), polyaluminium chloride (PAC) thiab ib qho kev sib xyaw flocculant ntawm ob hauv kev ua haujlwm tas li ntawm daim nyias nyias bioreactor (MBR), lawv tau tshawb xyuas kom txo tau MBR.Cov nyhuv ntawm daim tawv nqaij fouling.Kev ntsuas ntsuas qhov kev hloov pauv ntawm MBR lub voj voog ua haujlwm, lub sijhawm ua haujlwm sludge capillary dej nqus dej (CST), Zeta peev xwm, sludge ntim ntsuas (SVI), sludge floc particle loj faib thiab cov ntsiab lus ntawm cov khoom siv polymer thiab lwm yam tsis, thiab saib xyuas lub reactor Raws li cov Kev hloov pauv ntawm cov activated sludge thaum lub sijhawm ua haujlwm, peb qhov kev siv tshuaj ntxiv thiab ntau npaum li cas uas yog qhov zoo tshaj plaws nrog tsawg flocculation ntau npaum li cas tau txiav txim siab.
Cov txiaj ntsig kev sim qhia tau hais tias flocculant tuaj yeem txo cov fouling ntawm daim nyias nyias.Thaum peb qhov sib txawv flocculants tau ntxiv ntawm tib qhov ntau npaum li cas, PDMDAAC muaj cov txiaj ntsig zoo tshaj plaws ntawm kev txo cov pa phem hauv daim nyias nyias, ua raws li cov khoom sib xyaw flocculants, thiab PAC muaj qhov cuam tshuam tsis zoo.Hauv kev ntsuam xyuas ntawm kev siv tshuaj ntxiv thiab kev txhaj tshuaj ib ntus, PDMDAAC, kev sib xyaw flocculant, thiab PAC txhua tus tau pom tias kev noj tshuaj ntxiv tau zoo dua li kev noj tshuaj hauv kev txo cov pa phem.Raws li kev hloov pauv ntawm kev hloov pauv siab (TMP) hauv qhov kev sim, nws tuaj yeem txiav txim siab tias tom qab thawj zaug ntxiv ntawm 400 mg / L PDMDAAC, qhov koob tshuaj ntxiv zoo tshaj plaws yog 90 mg / L.Qhov kev pom zoo ntxiv ntawm 90 mg / L tuaj yeem ua rau lub sijhawm ua haujlwm tsis tu ncua ntawm MBR, uas yog 3.4 npaug ntawm lub reactor yam tsis muaj flocculant ntxiv, thaum qhov kev pom zoo ntxiv ntawm PAC yog 120 mg / L.Cov flocculant sib xyaw ua ke ntawm PDMDAAC thiab PAC nrog qhov sib piv loj ntawm 6: 4 tuaj yeem tsis tsuas yog txo cov fouling membrane, tab sis kuj txo cov nqi khiav lag luam los ntawm kev siv PDMDAAC ib leeg.Kev sib xyaw ua ke ntawm kev loj hlob ntawm TMP thiab kev hloov pauv ntawm SVI tus nqi, nws tuaj yeem txiav txim siab tias qhov kev pom zoo ntawm cov tshuaj flocculant ntxiv yog 60mg / L.Tom qab ntxiv cov flocculant, nws tuaj yeem txo qhov CST tus nqi ntawm cov sludge sib tov, nce Zeta peev xwm ntawm qhov sib tov, txo tus nqi SVI thiab cov ntsiab lus ntawm EPS thiab SMP.Qhov sib ntxiv ntawm cov flocculant ua rau cov activated sludge flocculate ntau nruj, thiab qhov chaw ntawm daim nyias nyias module Cov txheej lim ncuav mog qab zib ua thinner, ncua lub sij hawm ua hauj lwm ntawm MBR nyob rau hauv tas li ndlwg.Cov flocculant tsis muaj kev cuam tshuam rau MBR effluent dej zoo.MBR reactor nrog PDMDAAC muaj qhov nruab nrab tshem tawm ntawm 93.1% thiab 89.1% rau COD thiab TN, feem.Qhov concentration ntawm cov kua dej yog qis dua 45 thiab 5mg / L, mus txog thawj theem A tawm.txheem.
Tshaj tawm los ntawm Baidu.
Post lub sij hawm: Nov-22-2021