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以没食子酸加工废水生化出水为研究对象,以色度和COD去除率为参考指标,研究了Fenton氧化、活性炭吸附、臭氧氧化、聚合硫酸铁-聚丙烯酰胺和聚合氯化铝-聚丙烯酰胺复合絮凝的处理效果并进行了经济可行性分析。结果表明,除臭氧氧化外,其他处理方法出水色度和COD均分别低于50和100 mg/L;Fenton氧化法的药剂成本最低,但存在流程较长,且出水p H较低,还需调节p H等缺陷,运行成本高;在达到同样的出水色度和COD情况下,聚合氯化铝-聚丙烯酰胺絮凝经济效益最佳。
In this paper, the biochemical effluent of gallic acid wastewater was taken as the research object, and the chromogenic and COD removal rates were taken as the reference indexes. The effects of Fenton oxidation, activated carbon adsorption, ozone oxidation, polyferric sulfate-polyacrylamide and polyaluminum chloride-polyacrylamide Flocculation treatment effect and carried out economic feasibility analysis. The results showed that, except for ozone oxidation, the other treatments were both lower than 50 and 100 mg / L in effluent colorimetric and COD, respectively. The Fenton oxidation method had the lowest cost, but the longer process and the lower p H Adjust p H and other defects, high operating costs; to achieve the same effluent color and COD cases, PAC-polyacrylamide flocculation best economic.