在使用铝盐、铁盐等各种无机混凝剂、絮凝剂的污水处理系统内，如需要处理的水量超过了澄清池的处理能力或由于其他因素造成水中絮体来不及沉降而外漂，只需添加0.1-2ppm的PAM助凝，即可明显提高沉降效果。而且，处理后水的COD和色度指标也会有明显的改善。
对酸洗废液进行一次性处理，并制取污水处理剂聚合硫酸铁。
Through primary treatment of acid wastewater, polymerizing iron sulphate of sewage cleaning anents is prepared.
根据文献资料，介绍了木质素的结构及理化性质，重点综述了木质素作为污水处理剂的开发应用进展；
According to the worldwide literature, the structure and physical and chemical properties of lignin was introduced, its study and application as sewage agent was especially introduced in the paper.
由本工艺生产的污水处理剂与国家相关标准和外购品的对比分析表明，产品的质量达到国家标准要求。
Comparison of the said agent with relevant applicable national standard and the commercial equivalent shows that it has been up to the requirements as specified in applicable national standard.
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