乙酰磺胺酸钾废水的预处理工艺优化研究

Optimized Study on Pretreatment Process of Acesulfame-K Wastewater

在确定微电解、Fenton氧化、混凝沉淀各自最佳反应条件的基础上,进一步研究了单独混凝、H2O2强化微电解工艺对废水的处理效果。试验结果表明,单独混凝工艺在最佳条件下COD、NH3-N、TP的平均去除率分别为16.9%、20.1%、59.4%;强化微电解工艺在最佳反应条件下,COD、NH3-N、TP去除率分别为32%、-4.5%、69%。通过对比试验发现,微电解/Fenton氧化/混凝沉淀联合工艺效果最好,COD平均去除率能达到55%。对该化工厂的废水预处理工艺提出改造方案,初步预算了工程改造投资及药剂费用。

Process of independent coagulating sedimentation and enhanced micro-electrolysis via H2O2 was studied in wastewater treatment on the basis of investigating the optimum parameters of mciroelectrolysis, Fenton oxidation and coagulating sedimentation process. Results indicated that average removal of COD, NHa＇N and TP was 16.9%, 20.1% and 59.4% respectively on the optimum conditions of independent coagulation process, while removal of COD, NH3-N and TP was 32%, -4.5% and 69% in H202 enhanced microelectrolysis test. Comparatively the combined process of microelectrolysis Fenton oxidation-coagulation has the best removal effect and its COD removal could reach 55%. The transformation schemes on the original process flows for pretreatment were proposed, and then the cost for the process transformation investment and reagents expense were preliminarily estimated.