基于电化学氧化法处理燃煤电厂高盐氨氮废水的分析

Analysis on Treatment of High Salt Ammonia Nitrogen Wastewater from Coal-f ired Power Plants based on Electrochemical Oxidation

以某个燃煤电厂的脱硫废水、精处理再生废水为例,对其水质分析后,设计了电化学氧化法降解氨氮装置,对于氨氮降解的影响因素通过改变电极表面清洁度、水温、初始氯根浓度、电流密度、TDS以及停留时间等进行研究。结果表明:高盐氨氮废水通过电解可降低COD与氨氮,但对重金属不能降解;电极表明清洁度、初始Cl^(-)含量、停留时间以及电流密度越高,氨氮降解效果就越好;在氨氮废水处理中通过电化学工艺,能够对脱硫废水COD高的问题进行解决。

Taking the desulfurization wastewater and polishing regeneration wastewater from a coal-f ired power plant as an example,after analyzing their water quality,an electrochemical oxidation device was designed to degrade ammonia nitrogen.The influencing factors of ammonia nitrogen degradation were studied by changing electrode surface cleanliness,water temperature,initial chloride concentration,current density,TDS,and residence time.The results show that high salt ammonia nitrogen wastewater can reduce COD and ammonia nitrogen through electrolysis,but cannot degrade heavy metals.The electrode showed that the higher the cleanliness,initial Cl^(-)content,residence time,and current density,the better the ammonia nitrogen degradation effect would be.The problem of high COD in desulfurization wastewater can be solved through electrochemical processes in the treatment of ammonia nitrogen wastewater.