Polyvinyl alcohol wastewater treatment agent and method for treating wastewater by using same

The invention belongs to the technical field of wastewater multi-stage treatment devices with at least one physical treatment step, and particularly relates to a polyvinyl alcohol wastewater treatmentagent. The polyvinyl alcohol wastewater treatment agent comprises a treatment agent A and a treatment agent B, the treatment agent A is a polyacrylamide solution, and the treatment agent B is a solution containing sodium sulfate, calcium chloride and potassium carbonate or a solution containing sodium sulfate and a phosphate. The polyvinyl alcohol wastewater treatment agent can be used for treating high-concentration polyvinyl alcohol wastewater, industrial production is easy to realize when the polyvinyl alcohol wastewater treatment agent is used for treating the polyvinyl alcohol wastewater, and the stability is good. 本发明属于至少有一个物理处理步骤的废水的多级处理装置技术领域，具体涉及一种聚乙烯醇废水处理剂。所述聚乙烯醇废水处理剂包括处理剂A和处理剂B，所述处理剂A为聚丙烯酰胺溶液，所述处理剂B为含有硫酸钠、氯化钙和碳酸钾的溶液或含有硫酸钠和磷酸盐的溶液。该处理剂能够处理高浓度聚乙烯醇废水，且采用该处理剂处理聚乙烯醇废水，易于实现工业化生产，且稳定性好。