Chithandizo chamadzi: kusankha pakati pa polyluluminum chloride ndi aluminium sulfate

Mu gawo la chithandizo chamadzimadzi, onse a polyalumuminium chloride (pac) ndi aluminium sulfate kwambirikuchulidwa. Pali zosiyana mu kapangidwe ka mankhwala awa, zomwe zimapangitsa ntchito yawo ndi ntchito. M'zaka zaposachedwa, pang'onopang'ono pac yakondedwa chifukwa cha chithandizo chake chamankhwala ndi liwiro. Munkhaniyi, tikambirana za kusiyana pakati pa pac ndi aluminium sulfate mankhwala opulumutsa madzi kuti akuthandizeni kupanga chisankho chidziwitso.

Choyamba, tiyeni tiphunzire za polyalumunum chloride (pac). Monga polymel coagulant, pac ili ndi zotchinga bwino kwambiri ndipo zimatha kupanga zingwe mwachangu. Imakhala ndi mbali yokhudza kugwiritsa ntchito mogwirizana ndi kusintha kwa magetsi ndi kubisala, ndipo imagwiritsidwa ntchito molumikizana ndi malo osungirako malo osungira mosamala. Poyerekeza ndi aluminium sulfate, pac ili ndi mphamvu yolimba komanso madzi abwino pambuyo poyeretsa. Pakadali pano, mtengo wamadzi oyeretsa pac ndi 15% -30% wotsika kuposa aluminium sulfate. Pankhani yowononga Alkalining m'madzi, pac ili ndi zoperewera ndipo zimatha kuchepetsa kapena kuletsa jakisoni wa othandizira alkaline.

Chotsatira ndi aluminium sulfate. Monga mwachikhalidwe, aluminiyamu sulfate adsorbs ndikuphatikiza zodetsa kudzera mwa aluminiyamu hydroxide colloids opangidwa ndi hydrolysis. Mtengo wake wosungunuka umakhala wosauka, koma ndizoyenera kulandira madzi amoto ndi pH ya 6.0-7.5. Poyerekeza ndi pac, aluminium sulfate imakhala yotsika kwambiri komanso yoyeretsa madzi, ndipo mtengo wa kuyeretsa madzi ndikokwera.

Pankhani ya kukula kwa ntchito, pac ndi aluminium sulfate imakhala ndi mapulogalamu osiyanasiyana; Pac nthawi zambiri imakhala yosavuta yothana ndi mitundu msanga, yomwe imathandizanso kuchita bwino. Komabe, aluminium sulfate, mbali inayo, samachedwa hydrolze ndipo amatenga nthawi yayitali kuti agwirizane.

Aluminium sulfateAdzachepetsa PH ndi kuperekera madzi opangidwa ndi madzi, chifukwa chake koloko kapena laimu ndiyofunikira kuti musinthe. Pulogalamu ya pac ili pafupi kwambiri ndi osalowerera komanso osafunikira pa ntchito iliyonse yolowerera (koloko kapena laime).

Pankhani yosungirako, pac ndi aluminium sulfate nthawi zambiri imakhala yokhazikika komanso yosavuta kusunga ndi kunyamula. Pomwe pac iyenera kusindikizidwa kuti mupewe kuyamwa chinyezi komanso kuwonekera kwa dzuwa.

Kuphatikiza apo, kuchokera pakuwona kwa chilengedwe, aluminiyamu sulfate ndikosavuta kugwiritsa ntchito koma zowawa zambiri. Posankha coagulants, zomwe zingachitike pa zida zamankhwala ziyenera kuzilingalira bwino.

Powombetsa mkota,Polyoluminim chloride. Pafupifupi pang'onopang'ono, pamawanda amayamba kukhala osavuta kwambiri chifukwa cha kuchuluka kwake, kuthekera kwa madzi mwachangu ndi kuthekera kwamphamvu. Komabe, aluminiyamu sulfate akadali ndi zabwino zosatheka pazomwe zinachitika. Chifukwa chake, posankha coagulant, zinthu monga zofunika zenizeni, chithandizo chamankhwala ndi mtengo ziyenera kulingaliridwa. Kusankha njira yofunika kuthandizira kukonza njira yothandizira kuwononga madzi.