甲醛法处理兰炭废水反应条件的优化

Optimization of Reaction Conditions for Formaldehyde Treatment of Semi-coking Wastewater

利用甲醛将兰炭废水中的酚类物质转化为酚醛树脂,以便资源化利用兰炭废水。通过测定酚醛树脂生成过程中挥发酚、COD、氨氮和油的含量,调控反应时间、温度以及原料比例,确定制备酚醛树脂的最优反应条件。同时,应用X射线晶体衍射(XRD)和扫描电子显微镜(SEM)等表征技术对生成的酚醛树脂进行理化分析。研究结果显示,甲醛法处理兰炭废水制备酚醛树脂的最佳条件为反应温度=90℃,反应时间=4 h,甲醛与兰炭废水的体积比=1:40。

Phenolic substances in semi-coking wastewater were converted into phenolic resin by formaldehyde,therefore the resources were utilized.Volatile phenol,COD,ammonia nitrogen and oil in semi-coking wastewater before and after phenolic resin formation were detected to optimize the reaction time,temperature and raw mate-rial ratio,eventually the optimal reaction conditions for phenolic resin preparation were determined.Meanwhile,the physicochemical analysis of phenolic resin materials was carried out by XRD and SEM.The results showed that a volume ratio of 1:40(formaldehyde vs.semi-coking wastewater),a reaction temperature of 90℃,and a reaction time of 4 hours were the optimum reaction conditions for semi-coking wastewater treated by formaldehyde.