臭氧催化氧化与电芬顿工艺在污泥干化冷凝液深度处理中的对比分析

Comparative analysis of ozone catalytic oxidation and electric Fenton process in advanced treatment of sludge drying condensate

燃煤耦合污泥发电系统产生的污泥干化冷凝液,这类高氨氮、高油分工业废水经常规理化处理后仍含有部分难降解有机物,对比臭氧催化氧化工艺和电芬顿工艺,经过14天连续稳定运行,二者产水COD均低于20mg/L,去除率分别为76.1%和69.6%。臭氧催化氧化工艺系统吨水处理成本为1.43元,电芬顿工艺系统吨水处理成本为2.77元,臭氧催化氧化工艺运行成本低,具有更好的经济性。

The sludge condensate generated during process of sludge drying in power plant internally combusted coal coupled with dried sludge still contains some refractory organics after regular physical and chemical treatment of industrial wastewater with high ammonia nitrogen and high oil content.Compared with ozone catalytic oxidation process and the electric Fenton process,after 14 days of continuous and stable operation,the COD of their water production is lower than 20mg/L,and the removal rates are 76.1%and 69.6%respectively.The cost of treating a ton of water in the ozone catalytic oxidation process system is 1.43 yuan,while the cost of treating a ton of water in the electric Fenton process system is 2.77 yuan.Electric Fenton process not only is relatively complex in system operation and high treatment cost,but also tend to bring about secondary pollution of water.