应用DE型氧化沟处理城市污水的研究

Research on Wastewater Treatment with DE OD Processing

对张家港第二污水处理厂DE型氧化沟系统的各个阶段处理效果进行测试,结果表明:DE型氧化沟对城市污水的处理效果显著。COD、TN、TP的总去除率分别达到84.6%、68.3%、88.3%,处理水质优于国家二级排放标准。利用选择池的吸附作用和氧化沟的生化作用达到高去除率是DE型氧化沟系统的主要特点。

The efficiency of the DE oxidation ditch on the wastewater treatment in Zhangjiagang was investigated and the result showed that the system achieved a removal of COD, TN and TP as high as 84.6, 68.3 and 88.3 respectively and the effluent quality was better than the class II of the National Standard. One of the principal features of this system was to utilize the high adsorption ability of sludge in the selective basin and the decomposition ability of bacteria in the oxidation ditch to achieve high removal of organic and nutrient matters.