合成革废水处理工程实例

针对合成革废水COD高、TN高的特点,采用"气浮+UASB+缺氧+接触氧化"组合工艺对合成革综合废水进行处理,出水达到了《污水综合排放标准》(GB 8978—1996)中的一级标准,其中COD、BOD5去除率分别达到了98.1%、99.1%。当内循环比为200%、接触氧化池出水溶解氧为2.0 mg/L时,在各项指标达标的前提下,系统出水氨氮含量最低。

Case study on the treatment of synthetic Ieather wastewater

Since the synthetic leather wastewater is characterized by high COD and high total nitrogen ,the combined process,floatation+UASB+anoxia+contact oxidation has been used for its treatment. The results show that the effluent reaches the first level standard specified in the Integrated Wastewater Discharge Standard (GB 8978—1996),in which the removing rates of COD and BOD5 are 98.1%and 99.1%,respectively. When the inner circulating ratio is 200%,and the effluent dissolved oxygen content in the contact oxidation pond is 2.0 mg/L ,under the precon-dition that every index reaches the standard ,the ammonia-nitrogen content in the system effluent is the lowest.