Ngokudibanisa i-polydimethyldiallylammonium chloride (PDMDAAC), i-polyaluminium chloride (i-PAC) kunye ne-flocculant edibeneyo yezi zimbini ekusebenzeni okuqhubekayo kwe-membrane bioreactor (MBR), baphandwa ukuze banciphise i-MBR.Isiphumo sokungcola kwe-membrane.Uvavanyo lulinganisa utshintsho lomjikelo wokusebenza kwe-MBR, ixesha lokufunxa amanzi e-sludge capillary (CST), amandla e-Zeta, i-sludge volume index (SVI), i-sludge floc ubungakanani besayizi yokusabalalisa kunye nomxholo we-polymer ye-extracellular kunye nezinye iiparitha, kwaye ugcine i-reactor Ngokutsho Utshintsho lwe-sludge esebenzayo ngexesha lokusebenza, iidosi ezintathu ezongezelelweyo kunye neendlela zokulinganisa ezona zingcono kunye nedosi ye-flocculation encinci iye yamiselwa.
Iziphumo zovavanyo zibonisa ukuba i-flocculant inokunciphisa ngokufanelekileyo ukungcola kwe-membrane.Xa iiflocculants ezintathu ezahlukeneyo zongezwa kwidosi enye, iPDMDAAC yaba nefuthe elihle ekunciphiseni ungcoliseko lwe-membrane, ilandelwa yi-flocculants edibeneyo, kwaye i-PAC yaba nefuthe elibi kakhulu.Kuvavanyo lwedosi eyongezelelweyo kunye nemo yokuphumla, iPDMDAAC, i-composite flocculant, kunye nePAC zonke zibonise ukuba idosi eyongezelelweyo yayisebenza ngakumbi kunodosi ekudambiseni ukungcoliseka kwenwebu.Ngokotshintsho lwenguqu yoxinzelelo lwe-transmembrane (TMP) kuvavanyo, kunokumiselwa ukuba emva kokongezwa kokuqala kwe-400 mg / L PDMDAAC, idosi eyongezelelweyo eyongezelelweyo yi-90 mg / L.Elona dosi yokongeza ye-90 mg/L inokwandisa ngokubonakalayo ixesha eliqhubekayo lokusebenza le-MBR, eliphindwe nge-3.4 elo lereactor ngaphandle kweflocculant eyongezelelweyo, ngelixa idosi eyongezelelweyo eyongezelelweyo ye-PAC iyi-120 mg/L.I-flocculant edibeneyo eyenziwe nge-PDMDAAC kunye ne-PAC ene-mass ratio ye-6: i-4 ayinakukwazi ukunciphisa ngokufanelekileyo i-membrane fouling, kodwa inciphisa iindleko zokusebenza ezibangelwa ukusetyenziswa kwe-PDMDAAC yodwa.Ukudibanisa indlela yokukhula ye-TMP kunye notshintsho lwexabiso le-SVI, kunokumiselwa ukuba idosi efanelekileyo ye-composite flocculant supplement yi-60mg/L.Emva kokongeza i-flocculant, inokunciphisa ixabiso le-CST lomxube we-sludge, ukwandisa amandla e-Zeta yomxube, ukunciphisa ixabiso le-SVI kunye nomxholo we-EPS kunye ne-SMP.Ukongezwa kwe-flocculant kwenza i-sludge esebenzayo iqhube ngokukhawuleza, kunye nomphezulu wemodyuli ye-membrane Uluhlu lwekhekhe lokucoca olubunjiweyo luba luncinci, lwandisa ixesha lokusebenza kwe-MBR phantsi kokuhamba rhoqo.I-flocculant ayinasiphumo esicacileyo kumgangatho wamanzi amdaka we-MBR.I-reactor ye-MBR ene-PDMDAAC inezinga lokususa eliphakathi kwe-93.1% kunye ne-89.1% ye-COD kunye ne-TN, ngokulandelanayo.Ukuxinwa kwamanzi amdaka kungaphantsi kwe-45 kunye ne-5mg / L, ukufikelela kwinqanaba lokuqala lokukhutshwa.umgangatho.
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Ixesha lokuposa: Nov-22-2021