Why is polyaluminum chloride a good coagulant for water treatment?

Polyaluminum chloride (PAC) is highly effective coagulant for water treatment over conventional coagulants because of low dosage requirement, shorter flocculation time, smaller amount of sludge, high efficiency and low aluminum residual in treated water .

How does slagtite coagulant work?

Its function is to attract slag and other non-metallic impurities trapped in metal during melting. The slag and impurities (lower in specific gravity than metal) rise to the top and react with Slagtite forming a heavy viscous coagulant. The coagulant is easily removed by skimming or rolling with metal rod.

Is polyaluminium ferric chloride a composite coagulant?

Gao, B.; Yue, Q.; Miao, J. Evaluation of polyaluminium ferric chloride (PAFC) as a composite coagulant for water and wastewater treatment. Water Sci. Technol. 2003, 47, 127. [ Google Scholar] [ CrossRef] [ PubMed]

What is the coagulation time for aluminum sulfate and aluminum chloride coagulants?

However, for aluminum sulfate and aluminum chloride coagulants the coagulation time and settling time were reached to 15 and 35 min, respectively. The results revealed that the residual aluminum concentration in the treated water was very small for synthesized PAC coagulant which was <0.2 mg L −1.

What is high-purity poly-aluminum chloride (PACL)?

Poly-aluminum chloride (PACl) is one of the common coagulants for water and wastewater treatment. A new Chinese national standard of PACl has been implemented, where the concentration of insoluble substances, iron and heavy metals is to be controlled strictly, then researches on the preparation of high-purity PACl are needed.

Which chemicals can be used as coagulants for water treatment?

There are a large number of chemicals that can be used as coagulants for water treatment, which include inorganic based coagulants, organic based coagulants and hybrid materials coagulants. Aluminum sulfate, ferric chloride, ferric sulfate and polyaluminum chloride are inorganic based chemicals which can be used for water treatment .