聚羟基氯化铝的化学式,现在认为比较合适的是[Al_2(OH)_n·Cl_(6-n)]_m,其中n=1～5,m≤10,n为碱化度,m为聚合度。要提高絮凝效率,从“桥联作用”的观点来看,应增大聚羟基氯化铝的分子。所以提高碱化度n是一种途径,但n太高则易于生成难溶性的氢氧化铝。另 Poly hydroxy aluminum chloride chemical formula, now considered more appropriate is [Al 2 (OH) _n · Cl_ (6-n)] _ m, where n = 1-5, m ≤ 10, n is the degree of alkalinity, m is the polymerization degree. To improve the flocculation efficiency, from the “bridging effect” point of view, should increase the poly hydroxy aluminum chloride molecules. So to improve the degree of alkalinity n is a way, but n is too high to easily generate insoluble aluminum hydroxide. another