Abstract:

Through experiments, the removing capacity of a new type of liquid phosphorus removing agent and solid poly-aluminium chloride(PAC) has been compared. The results show that with the help of coagulant aid, polyacrylamide(PAM), when the optimal mass concentrations of the new phosphorus removing agent and PAM are 96 mg/L and 106 mg/L, respectively, the effluent TP mass concentrations are 0.42 mg/L and 0.49 mg/L, respectively, and removing rates can reach 86.0% and 85.3%, respectively. Furthermore, through comprehensive comparison of the turbidity and chroma changes with different dosages of chemicals, and the cost analysis by using optimal dosages, the unique superiority of the new type of phosphorus removing agent in the urban sewage treatment in the winter of North China has been obtained.

Key words: chemical coagulation, new phosphorus removing agent, poly-aluminum chloride, phosphorus removal

摘要：

通过试验比较了一种新型液态除磷剂与固态聚合氯化铝对北方冬季某市生物处理出水的除磷性能。结果表明,在聚丙烯酰胺的助凝作用下,新型除磷剂与PAC的最佳投药质量浓度分别为96、106 mg/L,出水总磷质量浓度分别为0.42、0.49 mg/L,去除率分别达到86.0%、85.3%;另外,通过综合比较不同药剂投加量下浊度和色度的变化,以及最佳投药量时对成本的分析,得出新型除磷剂在北方冬季城镇污水处理方面存在独特的优势。

关键词: 化学混凝, 新型除磷剂, 聚合氯化铝, 除磷

CLC Number: 

• TQ314.253