Emkhakheni wokuhlanza amanzi angcolile, kokubili i-polyaluminium chloride (PAC) ne-aluminium sulfate zisetshenziswa kabanzi njengeama-coagulants. Kunomehluko ekwakhekeni kwamakhemikhali kwalawa ma-ejenti amabili, okuholela ekusebenzeni kwawo nokusetshenziswa kwawo. Eminyakeni yakamuva, i-PAC iye yathandwa kancane kancane ngenxa yokusebenza kahle kwayo okuphezulu kanye nesivinini. Kulesi sihloko, sizoxoxa ngomehluko phakathi kwe-PAC ne-aluminium sulfate ekuhlanzeni amanzi angcolile ukuze sikusize wenze ukukhetha unolwazi.
Okokuqala, ake sifunde nge-polyaluminium chloride (PAC). Njenge-inorganic polymer coagulant, i-PAC inokunyibilika okuhle kakhulu futhi ingakha ama-flocs ngokushesha. Idlala indima yokuhlanganisa ngokusebenzisa ukungathathi hlangothi kukagesi kanye nokucupha inetha, futhi isetshenziswa ngokuhambisana ne-flocculant PAM ukususa ngempumelelo ukungcola emanzini angcolile. Uma kuqhathaniswa ne-aluminium sulfate, i-PAC inekhono eliqinile lokucubungula kanye nekhwalithi yamanzi engcono ngemva kokuhlanzwa. Khonamanjalo, izindleko zokuhlanzwa kwamanzi kwe-PAC zingaphansi ngo-15% -30% kune-aluminium sulfate. Mayelana nokusetshenziswa kwe-alkalinity emanzini, i-PAC inokusetshenziswa okuphansi futhi inganciphisa noma ikhansele umjovo we-alkaline ejenti.
Okulandelayo i-aluminium sulfate. Njenge-coagulant yendabuko, i-aluminium sulfate ikhangisa futhi ihlanganise ukungcola nge-aluminium hydroxide colloids ekhiqizwa i-hydrolysis. Izinga layo lokuncibilika liphansi kakhulu, kodwa lifanele ukuhlanzwa kwamanzi angcolile nge-pH engu-6.0-7.5. Uma kuqhathaniswa ne-PAC, i-aluminium sulfate inamandla okwelapha aphansi kanye nekhwalithi yamanzi ahlanzekile, futhi izindleko zokuhlanza amanzi ziphakeme kakhulu.
Mayelana nobukhulu bokusebenza, i-PAC ne-aluminium sulfate inezinhlelo zokusebenza ezihluke kancane; I-PAC ngokuvamile kulula ukuyiphatha futhi yenza ama-flocs ngokushesha, okuthuthukisa ukusebenza kahle kokwelashwa. I-aluminium sulfate, ngakolunye uhlangothi, ayisheshi ukukhiqiza i-hydrolyze futhi ingase ithathe isikhathi eside ukujiya.
I-aluminium sulfateizokwehlisa i-pH kanye ne-alkanility yamanzi ahlanzekile, ngakho-ke i-soda noma i-lime iyadingeka ukuze unciphise umphumela. Isixazululo se-PAC siseduze nokungathathi hlangothi futhi asikho isidingo sanoma iyiphi i-ejenti yokuthambisa (i-soda noma i-lime).
Mayelana nokugcinwa, i-PAC ne-aluminium sulfate ngokuvamile azinzile futhi kulula ukuyigcina nokuyihambisa. Ngenkathi i-PAC kufanele ivalwe ukuvimbela ukumuncwa komswakama kanye nokuchayeka elangeni.
Ngaphezu kwalokho, ngokombono we-corrosivity, i-aluminium sulfate kulula ukuyisebenzisa kodwa idla kakhulu. Lapho ukhetha ama-coagulant, umthelela ongaba khona womabili emishini yokwelapha kufanele ubhekwe ngokugcwele.
Ngokufigqiwe,I-Polyaluminium chloride(i-PAC) kanye ne-aluminium sulfate inezinzuzo zayo kanye nokubi ekuhlanzeni indle. Sekukonke, i-PAC kancane kancane isiba yi-coagulant evamile ngenxa yokusebenza kahle kwayo okuphezulu, amandla okuhlanza amanzi angcolile ngokushesha kanye nokuguquguquka kwe-pH okubanzi. Kodwa-ke, i-aluminium sulfate isenazo izinzuzo ezingenakushintshwa ngaphansi kwezimo ezithile. Ngakho-ke, lapho ukhetha i-coagulant, izici ezifana nesidingo sangempela, umphumela wokwelashwa kanye nezindleko kufanele zicatshangelwe. Ukukhetha i-coagulant efanele kuzosiza ukuthuthukisa ukusebenza kahle kokwelashwa kwamanzi angcolile.
Isikhathi sokuthumela: Oct-29-2024