I-Floccution - I-aluminium sulphate vs poly aluminium chloride

I-Floccation yinqubo ebizwa ngokuthi yizinhlayiya ezimiswe kabi ezikhona ekumisweni okuzinzile emanzini zimiswa. Lokhu kutholakala ngokungeza i-coagulant efanelekile. Inkokhiso emihle kubumbano olungathathi hlangothi imali ekhokhwayo engemihle ekhona emanzini (okungukuthi ayimisele). Lapho izinhlayiya zimiswa noma zithambekele, inqubo ye-floccution yenzeka. Izinhlayiya ezasezakhiweni zihlangana zibe izinhlayiya ezinkulu nezinkadlwana zize zisindayo ngokwanele ukuze zixazululwe ngamadimentation noma ezinkulu ngokwanele ukubopha ama-bubble omoya nokuntanta.

Namuhla sizobhekisisa izakhiwo ze-floccation zama-flocculants amabili ajwayelekile: i-poly aluminium chloride ne-aluminium sulfate.

I-Aluminium Sulfate: I-aluminium sulfate i-acidic ngokwemvelo. Umgomo osebenzayo we-aluminium sulfate kanjena: i-aluminium sulfate ikhiqiza i-aluminium hydroxide, al (0h) 3. I-Aluminium Hydroxides inebanga elilinganiselwe, ngaphezulu okungezona ngempumelelo i-hydrolysis noma, i-aluminium hydroxides ixazululwe ngokushesha ku-PHP (ie Ph ngaphezulu 8.5), ngakho-ke i-PH esebenzayo kumele ilawulwe ngokucophelela ukuyigcina ebangeni le-5.8-8.5. I-alkalinity emanzini kumele yanele ngesikhathi senqubo yokugcwala ukuqinisekisa ukuthi i-insoluble hydroxide yakhiwa ngokuphelele futhi inembe. Isusa imibala yombala kanye ne-colloidal ngokusebenzisa inhlanganisela ye-adsorption ne-hydrolysis ku / ku-metal hydroxides. Ngakho-ke, iwindi le-PH elisebenzayo le-aluminium sulfate liqinile ku-5.8-8.5, ngakho-ke kubaluleke kakhulu ukuqinisekisa ukuphathwa okuhle kwe-PH inqubo lapho usebenzisa i-aluminium sulfate.

Polyaluminum chloride(I-PAC) ingelinye lamakhemikhali asebenza kakhulu ekwelashweni azosetshenziswa namuhla. Isetshenziswa kabanzi ekuphuzeni kwamanzi aphuzwayo kanye nokwelashwa kwamanzi amdaka ngenxa yokusebenza kwayo okuphezulu okuphezulu kanye nobubanzi obubanzi bezicelo ze-PH kanye namazinga okushisa uma kuqhathaniswa namanye amakhemikhali akwelashwa amanzi. I-PAC iyatholakala kumabanga ahlukene ahlukene nge-alumina ukugxila okusukela ku-28% kuya ku-30%. I-Alumina yokuhlushwa akuyona nje ukucatshangelwa lapho ukhetha ibanga le-PAC okufanele uyisebenzise.

I-PAC ingabhekwa njenge-pre-hydrolysis coagulant. Amaqoqo we-aluminium angaphambi kwe-hydrolysis ane-density ephezulu kakhulu ekhokhiswe kakhulu, eyenza i-pac ngokwengeziwe i-cotics kune-alum. ngenza indawo eqinile yokungcola okumisiwe okumisiwe emanzini.

I-PAC inezinzuzo ezilandelayo ze-aluminium sulfate

1. Isebenza ekugxilweni okuphansi kakhulu. Njengomthetho wesithupha, umthamo we-PAC ucishe abe yingxenye eyodwa kwezintathu yethamo elidingekayo ku-Alum.

2. Ishiya i-aluminium eyinsalela kancane emanzini aphathwe

3. Ikhiqiza i-sludge engaphansi

4. Isebenza ngaphezu kwebanga le-PH

Kunezinhlobo eziningi ze-flocculants, futhi le ndatshana ingenisa ezimbili zazo. Lapho ukhetha umuntu ohlanganisiwe, kufanele ucabangele ikhwalithi yamanzi oyelapha kanye nesabelomali sakho sezindleko. Ngiyethemba unolwazi oluhle lokwelashwa lwamanzi. Njengomhlinzeki wamakhemikhali wamanzi aneminyaka engama-28 yesipiliyoni. Ngijabule ukuxazulula zonke izinkinga zakho (mayelana namakhemikhali wezokwelapha amanzi).