Ukwelashwa kwamanzi amdaka: Ukukhetha phakathi kwe-polyaluminum chloride ne-aluminium sulfate

Emkhakheni wekwelashwa kwamanzi amdaka, womabili ama-polyaluminum chloride (PAC) kanye ne-aluminium sulfate kusetshenziswa kabanzi njengobaAma-coabulants. Kunokwehluka kokwakheka kwamakhemikhali kwalawa makhemikhali amabili, okuholela ekusebenzeni kwawo kanye nesicelo sabo. Eminyakeni yamuva, i-PAC ithandeke kancane kancane ngokusebenza kwayo okuphezulu kanye nesivinini. Kulesi sihloko, sizoxoxa ngomehluko phakathi kwePac ne-aluminium sulfate ekwelashweni kwamanzi amdaka ukukusiza wenze isinqumo esinolwazi ngokwengeziwe.

Okokuqala, ake sifunde ngePolyaluminum Chloride (PAC). Njenge-inorganic polymer coagulant, i-PAC ine-solubility enhle kakhulu futhi ingadala ama-flocs. Idlala indima yokuhlangana ngokuhlanzeka kukagesi kanye ne-net trographation, futhi isetshenziswa ngokubambisana ne-PAM ye-Flocculant ukuze ususe ngokuphumelelayo ukungcola kwamanzi amdaka. Uma kuqhathaniswa ne-aluminium sulfate, i-PAC inekhono elinamandla lokucubungula kanye nekhwalithi yamanzi engcono ngemuva kokuhlanzwa. Okwamanje, izindleko zokuhlanzwa kwamanzi ze-PAC zingama-15% -30% aphansi kune-aluminium sulfate. Mayelana nokudla i-alkalinity emanzini, i-PAC inokusebenzisa okuphansi futhi inganciphisa noma ikhansela umjovo we-Alkaline Agent.

Okulandelayo yi-aluminium sulfate. Njenge-coagulant yendabuko, ama-adulfate adsfate adsAdes futhi ahlanganise ukungcola ngama-aluminium hydroxide colloids akhiqizwa yi-hydrolysis. Izinga layo elichithekile limpofu, kepha lilungele ukwelashwa kwamanzi amdaka nge-pH ka-6.0-7.5. Uma kuqhathaniswa ne-PAC, i-aluminium sulfate inesilinganiso sokwelashwa esingaphansi kanye nekhwalithi yamanzi ehlanziwe, kanye nezindleko zokuhlanzwa kwamanzi ziphakeme kakhulu.

Ngokwezingqinamba zokusebenza, i-PAC ne-aluminium sulfate zinezicelo ezihlukile kancane; I-PAC ngokuvamile kulula ukuyiphatha futhi ifomu ama-flocs ngokushesha, athuthukisa ukusebenza kahle kokwelashwa. Ngakolunye uhlangothi, i-aluminium sulfate, ngakolunye uhlangothi, ihamba kancane ukuze i-hydrolyze futhi ingathatha isikhathi eside ukuze ihlanganise.

I-Aluminium SulfateSizokwehlisa i-PH ne-AlKanity yamanzi aphathwe, ngakho-ke i-soda noma i-lime iyadingeka ukuze ungathathi hlangothi umphumela. Isixazululo se-PAC siseduze nokungathathi hlangothi futhi asikho isidingo sanoma yimuphi umenzeli ongathathi hlangothi (isoda noma i-lime).

Ngokwesitoreji, i-PAC ne-aluminium sulfate ivame ukuzinza futhi kulula ukuyigcina nokuhambisa. Ngenkathi i-PAC kufanele ivalwe ukuvikela ukumuncwa komswakama nokuchayeka elangeni.

Ngaphezu kwalokho, kusuka endaweni yokubukwa kokuqina, i-aluminium sulfate kulula ukuyisebenzisa kepha kulimazeke kakhudlwana. Lapho ukhetha ama-coagulants, umthelela ongaba khona wazo zombili kumishini yokwelashwa kufanele ubhekwe ngokuphelele.

Ngokufigqiwe,Polyaluminum chloride(PAC) kanye ne-aluminium sulfate zinezinzuzo zazo nokubi ekwelashweni kwendle. Sekukonke, i-PAC ihamba kancane kancane i-coagulant ejwayelekile ngenxa yokusebenza kwayo okuphezulu, amandla asheshayo okuchitha amanzi nokuqina kwe-PH ebanzi. Kodwa-ke, i-aluminium sulfate isenezinzuzo ezingenakuphikwa ngaphansi kwezimo ezithile. Ngakho-ke, lapho ukhetha okuhlanganisiwe, izici ezinjengemfuno yangempela, umphumela wokwelapha nezindleko kufanele kubhekwe. Ukukhetha okulungile kuzosiza ukuthuthukisa ukusebenza kahle kokwelashwa kwamanzi amdaka.