Wastewater Treatment Chemicals Yellow Powder Coagulant Polyaluminium Chloride PAC

Polyaluminum chloride (PAC) is an inorganic polymer coagulant. It is a water-soluble inorganic polymer between AlCl3 and Al(OH)3. The general chemical formula is [Al2(OH)nCl6-n]m, where m represents the degree of polymerization and n represents the neutrality of the PAC product. n=1~5 is a highly charged polymer ring chain with Keggin structure, which has a high degree of electric neutralization and bridging effect on colloids and particles in water, can remove micro-toxic substances and heavy metal ions, and has stable performance. The inspection method can be inspected according to the international GB 15892-2003 standard. Due to the bridging effect of hydroxide ions and the polymerization of polyvalent anions, the produced polyaluminum chloride is an inorganic polymer water treatment agent with larger molecular weight and higher electric charge.

Polyaluminum chloride has the properties of adsorption, aggregation, precipitation, etc., has poor stability and is corrosive. If accidentally splashed on the skin, rinse with water immediately. Production personnel must wear overalls, masks, gloves, and long rubber boots. Polyaluminum chloride has the advantages of good spray drying stability, wide water area, fast hydrolysis speed, strong adsorption capacity, large alum formation, fast precipitation, low turbidity of the effluent, and good dehydration performance. Spray-dried products can ensure safety, reduce water accidents, and are very safe and reliable for residents' drinking water. Therefore, polyaluminum chloride is also called high-efficiency polyaluminum chloride, high-efficiency PAC or high-efficiency spray-drying polyaluminum chloride. Polyaluminum chloride is suitable for raw water with various turbidity, with a wide pH range, but compared with polyacrylamide, its precipitation effect is far inferior to polyacrylamide.

PAC polyaluminum chloride has the advantages of good spray drying stability, wide water surface, fast hydrolysis, strong adsorption capacity, large alum formation, fast precipitation, low turbidity of the effluent, good dehydration performance, etc., under the same water quality. Spray drying polymerization The amount of aluminum chloride is reduced, especially in the case of poor water quality. Compared with drum drying polyaluminum chloride, the amount of spray-dried products can be reduced by half, which not only reduces the labor intensity of workers, but more importantly, reduces the cost of water production for users. In addition, spray-dried products can ensure safety, reduce water accidents, and are very safe and reliable for residents' drinking water.