Tau ntau xyoo, polyaluminium chloride tau tsim los ua flocculant nrog cov thev naus laus zis paub tab thiab kev muag khoom loj hauv khw, uas nyiam hloov cov tshuaj flocculant. Polyaluminium chloride yog ib qho uas nquag siv coagulant hauv kev kho dej. Nws muaj txiaj ntsig zoo rau kev kho dej thiab ua lub luag haujlwm tseem ceeb hauv kev ua kom huv ntawm cov dej haus thiab dej phwj tuaj. Cov ntsiab lus ntawm polyaluminium chloride feem ntau siv los ntawm peb yog 26%, 28% thiab 30%.
Polyaluminium chloride plays lub luag haujlwm tseem ceeb hauv kev kho dej. Hauv kev siv flocs, nws muaj qhov zoo ntawm kev sib sau ceev, yooj yim tsim ntawm alum loj, ceev ceev ceev thiab zoo effluent zoo. Nws tuaj yeem nqus tau zoo thiab tshem tawm cov khoom tsis zoo xws li hlau, fluorine, arsenic thiab cov kab mob hauv dej. Nws kuj muaj cov haujlwm ntawm kev tshem tawm turbidity, decolorization thiab deodorization.
Puas yog kev kho dej polyaluminium chloride cuam tshuam los ntawm tus nqi pH ntawm cov dej nyoos?
Polyaluminium chloride muaj ntau yam kev siv rau pH tus nqi ntawm cov dej nyoos, tab sis nws kuj muaj qee yam kev txwv. Los ntawm kev sim tshawb nrhiav thiab kev siv theoretical, CODcr tshem tawm tus nqi nce ntxiv nrog qhov nce ntawm pH tus nqi ntawm cov dej nyoos.
Thaum tus nqi pH ntawm cov dej nyoos nyob hauv thaj tsam ntawm 6-8, cov nyhuv flocculation yog qhov zoo tshaj plaws. Thaum tus nqi pH sib npaug li 7, CODcr tshem tawm tus nqi siab tshaj plaws, nce mus txog ntau dua 85%, vim tias pH tus nqi me me, Polyaluminium chloride yog ib qho yooj yim los tsim ib qho kev sib xyaw nrog H thiab txhuas sulfate. Thaum tus nqi pH siab, nws yog ib qho yooj yim los tsim aluminium hydroxide nrog Oh, uas yog ib qho nyuaj rau kev sib cais los ntawm cov pa phem, cuam tshuam qhov kev ncua ntawm cov tshuaj tiv thaiv coagulation thiab txo cov kev kho mob zoo heev. PAC hloov mus rau tus nqi pH dav, tab sis cov nyhuv kho dej yog qhov zoo tshaj plaws thaum cov dej zoo pH tus nqi nruab nrab.