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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。
On the basis of determining the optimal reaction conditions of micro-electrolysis, Fenton oxidation and coagulation and sedimentation respectively, the effect of wastewater treatment by single coagulation and H2O2-enhanced micro-electrolysis was further studied. The results showed that the average removal rates of COD, NH3-N and TP under the optimal conditions were 16.9%, 20.1% and 59.4%, respectively. Under the optimal reaction conditions, the COD, NH3- N, TP removal rates were 32%, - 4.5%, 69%. Through the comparative test, it is found that the combined effect of micro-electrolysis / Fenton oxidation / coagulation and sedimentation is the best, and the average COD removal rate can reach 55%. The chemical plant wastewater pretreatment proposed renovation program, the initial budget of the project investment and pharmaceutical costs.