摘要
本文对处理含乳化油废水所用的破乳絮凝剂进行了试验研究。分别采用电解质、无机高分子聚合物及电解质与高分子聚合物复合处理含乳化油废水。结果表明 ,与采用单一药剂相比 ,电解质与无机高分子聚合物复合处理含乳化油废水具有投药量小、药剂费用低、处理效果好、p H值适用范围宽等特点。本文还探讨了电解质与无机高分子聚合物复合破乳的机理 ,并且提出处理不同浓度的含乳化油废水时电解质与高分子聚合物的最佳复配比例及配比规律。还讨论了投加聚丙烯酰胺 (PAM)的协同作用。
This paper studies the breaking agents in emulsion wastewater treatment. As a result of its using of electrolyte or inorganic polymers it has found the optimum casting quantity of such agents. Using electrolyte (CaCl 2) and inorganic polymer (poly aluminum chloride) as a compound flocculent in treating emulsion wastewater and comparing it with the single flocculent, our research has found a lot of advantages of using it, such as the amount of the agent being small as well as its low cost. As is shown in the paper, the optimal pH working scale of the compound flocculent is 7.0～10.5, much broader than using the single flocculent. This paper also discusses the breaking mechanism of the electrolyte and inorganic polymer as a compound flocculent. The chief function of electrolyte is to compress the double electrode layer, while the chief function of the inorganic polymer is to produce the flocculent and adsorb the oil droplet. As a result of experiments, the optimum ratio and regularity of the compound flocculent has been gained when treated with the different concentrations of the wastewater. Last of all, the paper has made a discussion as to the effect of polyacrylamide (PAM), which, as experiments show, helps to improve the performance of flocculates. The reaction of the subsidence of the sample with PAM can be finished in 10 minutes while it would take 20 minutes without PAM. Thus, the optimum adding quantity of PAM would be 0.2 mg/L. PAM has another advantage in making flocculates big, solid and easy to be dehydrated.
出处
《安全与环境学报》
CAS
CSCD
2002年第4期1-6,共6页
Journal of Safety and Environment
