Ngokungezwa kwe-polydimethyldiallylammonium chloride (PDMDAAC), i-polyaluminium chloride (PAC) kanye ne-flocculant eyinhlanganisela yalokhu okubili ekusebenzeni okuqhubekayo kwe-membrane bioreactor (MBR), baphenywa ukuze kwehliswe i-MBR.Umphumela wokungcoliswa kwe-membrane.Ukuhlolwa kulinganisa izinguquko zomjikelezo wokusebenza we-MBR, isikhathi sokumuncwa kwamanzi e-sludge capillary (CST), amandla e-Zeta, inkomba yevolumu ye-sludge (SVI), ukusatshalaliswa kosayizi wezinhlayiyana ze-sludge floc kanye nokuqukethwe kwe-polymer ye-extracellular kanye neminye imingcele, bese ubheka i-reactor Ngokusho izinguquko zodaka olucushiwe ngesikhathi sokusebenza, imithamo emithathu eyengeziwe kanye nezindlela zomthamo ezihamba phambili ezinomthamo omncane we-flocculation zinqunyiwe.
Imiphumela yokuhlolwa ibonisa ukuthi i-flocculant ingadambisa ngokuphumelelayo ukungcola kwe-membrane.Lapho ama-flocculants amathathu ahlukene engezwa esikalini esifanayo, i-PDMDAAC yaba nomthelela omuhle kakhulu ekudambiseni ukungcoliswa kolwelwesi, kulandelwa ama-flocculants ayinhlanganisela, futhi i-PAC yaba nomthelela omubi kakhulu.Ekuhlolweni komthamo owengeziwe kanye nemodi yesikhawu somthamo, i-PDMDAAC, i-flocculant eyinhlanganisela, kanye ne-PAC konke kubonise ukuthi umthamo owengeziwe wawusebenza kangcono kunomthamo ekudambiseni ukungcoliswa kolwelwesi.Ngokusho koshintsho lwe-transmembrane pressure (TMP) ekuhlolweni, kunganqunywa ukuthi ngemva kokwengezwa kokuqala kwe-400 mg/L PDMDAAC, umthamo ongcono kakhulu owengeziwe ngu-90 mg/L.Umthamo owengeziwe ophelele ongu-90 mg/L ungandisa kakhulu isikhathi sokusebenza esiqhubekayo se-MBR, ephindwe izikhathi ezingu-3.4 kunerector ngaphandle kwe-flocculant eyengeziwe, kuyilapho isikali esingeziwe se-PAC singu-120 mg/L.I-flocculant ehlanganisiwe eyakhiwe i-PDMDAAC ne-PAC enesilinganiso esikhulu se-6: 4 ayikwazi nje ukunciphisa ngempumelelo ukungcola kwe-membrane, kodwa futhi yehlise izindleko zokusebenza ezibangelwa ukusetshenziswa kwe-PDMDAAC yodwa.Ukuhlanganisa ukuthambekela kokukhula kwe-TMP kanye noshintsho lwevelu ye-SVI, kunganqunywa ukuthi umthamo ophelele wesengezo se-flocculant esiyinhlanganisela ngu-60mg/L.Ngemuva kokungeza i-flocculant, inganciphisa inani le-CST lengxube ye-sludge, ikhulise amandla e-Zeta wengxube, inciphise inani le-SVI kanye nokuqukethwe kwe-EPS ne-SMP.Ukwengezwa kwe-flocculant kwenza i-sludge ecushiwe iqhume ngokuqinile, futhi ingaphezulu lemojuli ye-membrane Isendlalelo sekhekhe lesihlungi esakhiwe siba mncane, sandise isikhathi sokusebenza se-MBR ngaphansi kokugeleza okuqhubekayo.I-flocculant ayinawo umthelela osobala kukhwalithi yamanzi angcolile ye-MBR.Ireactor ye-MBR ene-PDMDAAC inesilinganiso sokususa esimaphakathi esingu-93.1% no-89.1% se-COD ne-TN, ngokulandelana.Ukugcwala kwamanzi angcolile kungaphansi kuka-45 kanye no-5mg/L, kufinyelela ezingeni lokuqala lokuphuma.ejwayelekile.
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Isikhathi sokuthumela: Nov-22-2021