糖精生产中高浓度酸性废水预处理工艺研究

A Study of Pretreatment Technology of High Acidity Waste Water in the Glucide Production

提出了糖精合成酸性含铜废水资源回收与预处理的工艺路线,并对加温、曝气和金属置换与废水COD、Cu2+浓度、酸度、色度变化之间的关系进行了深入的研究,提出最佳曝气温度为80℃,时间为1 h,此时铜置换率达80%,COD去除率50%,酸度去除13%。

This article focused on the pretreatment of the waste water engendered by the production process of glucide. The waste water includes high concentration of Cu^2＋ and acidity. This study researched the effects of three main factors： temperature, oxygenation and metalline replacement reaction, and also discussed the relationship among COD, Cu^2＋ , acidity and chroma. In the end, we put forward the appropriate condition of pretreatment, including the best aerate temperature at 80℃ for 1 h and so on. The ratio of copper displacement reached 80%, COD was wiped off by 50%, acidity was removed by 13%.