Ngokungezelela kwe-polydimethyldoniamlammonium chloride (pdmdaac), i-polyaluminum), i-polyaluminum chloride (PAC) kanye ne-composite flocculant yalezi ezimbili ekusebenzeni okuqhubekayo kwe-membrane bioreactor (MBR), aphenywa ukunciphisa i-MBR. Umphumela we-membrane ethambile. Ukuhlolwa kulinganisa izinguquko zomjikelezo osebenza nge-MBR, i-Sludge icushiwe isikhathi sokutholwa kwamanzi (CST), i-zeta engenzeka, i-slidge Volume Index, futhi ibona i-reacmeter ngokwezindlela zokusebenza kwezindlela zokusebenza okusebenzayo, izindlela zemithamo ezihamba phambili kunqunywe.
Imiphumela yokuhlolwa ikhombisa ukuthi i-flocculant ingadambisa ngempumelelo i-membrane exakile. Lapho ama-flocculants amathathu ahlukene engezwa kumthamo ofanayo, i-PDMDAAP yayinomphumela omuhle kakhulu ekuguqukeni kwe-membrane, ilandelwe yi-composite flocculants, futhi i-PAC yayinomphumela omubi kakhulu. Esivivinyweni se-DOSAGE Yokwengeza kanye ne-DOSIng Stimel Mode, i-PDMDAAC, i-Flocculant ye-Composite, futhi konke okukhombisa ukuthi umthamo owengeziwe wawuphumelela ukwedlula ukungcoliswa kwe-membrane. Ngokusho komkhuba wokushintsha kwengcindezi ye-transmemmembrane (TMP) ekuhlolweni, kunganqunywa ukuthi ngemuva kokungezwa kokuqala kwe-400 mg / l pdmdaac, umthamo omuhle kakhulu we-90 mg / l. Umthamo ongezelelweyo ofanele we-90 mg / l unganweba kakhulu isikhathi esiqhubekayo sokusebenza se-MBR, okuyisikhathi esingu-3.4 sokuthi umthamo wokuhlaselwa ngaphandle kwe-PAC ngu-120 mg / l. I-Composetite Flocculant eyakhiwe nge-PDMDAAC ne-PAC ngesilinganiso esiningi esingu-6: 4 ayikwazi ukudambisa ngempumelelo i-membrane ethambile, kodwa futhi yehlisa izindleko ezibangelwa ukusetshenziswa kwe-PDMDAAC kuphela. Ukuhlanganisa ukuthambekela kokukhula kwe-TMP kanye noshintsho lwenani le-SVI, kunganqunywa ukuthi umthamo ofanele we-composite flocculant isengezo ngu-60mg / l. Ngemuva kokungeza i-flocculant, kunganciphisa inani le-CST yengxube ye-sludge, kwandise amandla we-zeta yengxube, kunciphise inani le-svi nokuqukethwe kwe-EPS ne-SMP. Ukungezwa kwe-flocculant kwenza i-sludge eyenziwe yasebenza ngokuqinile ngokuqinile, futhi ingaphezulu le-membrane module isihlungi sekhekhe lekhekhe lekhekhe liba mncane, selule isikhathi sokusebenza kwe-MBR ngaphansi kokugeleza okungapheli. I-Flocculant ayinamphumela osobala kwikhwalithi yamanzi e-MBR eguqukayo. I-MBR reactor ne-PDMDAAC inesilinganiso esimaphakathi sokususa sama-93.1% no-89.1% nge-COD ne-TN, ngokulandelana. Ukuhlushwa kwe-Effent kungaphansi kwama-45 no-5mg / l, kufinyelela ezingeni lokuqala lokukhipha. standard.
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Isikhathi sePosi: Nov-22-2021