活性污泥法去除废水中甲醛及COD

摘要

In this paper,the wastewater with formaldehyde concentration less than 500 mg/L and COD concentration less than 3000 mg/L produced in polyformaldehyde process was treated with activated sludge.Under the condition of pH=5~7,the removal rate of active sludge formaldehyde was above 90 % and COD degradation rate was above 80 %.%主要针对聚甲醛生产装置产生的含甲醛浓度小于500mg/L、COD浓度小于3000mg/L的废水,采用生物法活性污泥处理工艺,研究活性污泥对甲醛和COD的去除效果.结果表明,在pH=5~7条件下,甲醛去除率达90%以上,COD降解率达80%以上.