Mā te tāpiri i te polydimethyldiallylammonium chloride (PDMDAAC), te polyaluminum chloride (PAC) me te flocculant hiato o ngā mea e rua i roto i te mahi tonu o te membrane bioreactor (MBR), i rangahauhia ēnei hei whakaiti i te MBR. Te pānga o te poke o te membrane. Ka ine te whakamātautau i ngā huringa o te huringa whakahaere MBR, te wā mimiti wai capillary paru whakahohe (CST), te pūmanawa Zeta, te taupū rōrahi paru (SVI), te tohatoha rahi matūriki floc paru me te ihirangi polymer waho me ētahi atu tawhā, me te tirotiro i te tauhohenga. E ai ki ngā huringa o te paru whakahohe i te wā e mahi ana, e toru ngā horopeta tāpiri me ngā tikanga horopeta e pai ana me te iti o te horopeta flocculation kua whakatauhia.
E whakaatu ana ngā hua o te whakamātautau ka taea e te flocculant te whakaiti i te paru o te membrane. I te tāpiritanga o ngā flocculants rerekē e toru i te horopeta kotahi, ko te PDMDAAC te hua pai rawa atu ki te whakaiti i te parahanga membrane, ā, whai muri ko ngā flocculants hiato, ā, ko te PAC te hua kino rawa atu. I roto i te whakamātautau o te horopeta tāpiri me te aratau wā horopeta, i whakaatu te PDMDAAC, te flocculant hiato, me te PAC he pai ake te horopeta tāpiri i te horopeta ki te whakaiti i te parahanga membrane. E ai ki te ia o te huringa o te pēhanga transmembrane (TMP) i roto i te whakamātautau, ka taea te whakatau i muri i te tāpiritanga tuatahi o te 400 mg/L PDMDAAC, ko te horopeta tāpiri pai rawa atu ko te 90 mg/L. Ko te horopeta tāpiri pai rawa atu o te 90 mg/L ka taea te whakaroa ake i te wā mahi tonu o te MBR, arā, 3.4 ngā wā o te tauhohenga kāore he flocculant tāpiri, ko te horopeta tāpiri pai rawa atu o te PAC ko te 120 mg/L. Ko te wai whakapūkara hiato i titoa mai i te PDMDAAC me te PAC me te ōwehenga papatipu 6:4, kāore e taea anake te whakaiti i te paru o te kiriuhi, engari ka whakaiti hoki i ngā utu whakahaere i puta mai i te whakamahinga o te PDMDAAC anake. Mā te whakakotahi i te ia tipu o te TMP me te huringa o te uara SVI, ka taea te whakatau ko te horopeta pai rawa atu o te tāpiringa wai whakapūkara hiato he 60mg/L. I muri i te tāpiri i te wai whakapūkara, ka taea te whakaiti i te uara CST o te ranunga paru, te whakanui ake i te pūmanawa Zeta o te ranunga, te whakaiti i te uara SVI me te ihirangi o te EPS me te SMP. Mā te tāpiri i te wai whakapūkara ka piri ake te wai whakapūkara o te paru whakahohe, ā, ka angiangi ake te mata o te waeine kiriuhi. Ka roa ake te wā mahi o te MBR i raro i te rere tonu. Kāore he pānga kitea o te wai whakapūkara ki te kounga o te wai para MBR. Ko te reactor MBR me te PDMDAAC he 93.1% me te 89.1% te tere tango toharite mō te COD me te TN. Kei raro iho i te 45 me te 5mg/L te kukū o te parapara, e eke ana ki te taumata tuatahi o A. paerewa tukunga.
He wāhanga mai i Baidu.
Wā tuku: Whiringa-ā-rangi 22-2021