摘要：本文选取在不同pH值条件下投加不同浓度的PAC进行比较实验，结果表明：pH4时pH影响混凝结果；47时二者都不起决定性作用。由此推出木质素的混凝机理：首先破坏分子外围的溶剂化外壳，使亲液胶体变成憎液胶体，通过双电层的电中和作用沉淀下来。Abstract: The selection at different pH values under the conditions of adding different concentrations of PAC to compare experimental results showed that: pH 4 when pH influence the results of coagulation; 47 when the two do not play a decisive role. This launch of the coagulation mechanism of lignin: First of all external destructive elements of the solvation shell， so t
