The author outlines the type, characteristics of coagulant popularly used; especialy discusses the application conditions and extents of polyacrylamide, polyiron sulfate and poly alum.

介绍了用凝聚剂种类、性质,较详尽论述了聚丙烯酰胺、聚铁和聚分子化物使用条件和用范围。