摘要：
试验采用二级曝气生物滤池(BAF)工艺处理广西省南宁市的木薯加工废水,通过分析反应系统对COD、总氮(TN)的去除率,优化水力停留时间(HRT)、气水比,从而考察二级BAF对高COD木薯加工废水的处理效果。试验结果表明:采用二级BAF工艺处理高COD木薯加工废水可行,当HRT=8h,气水比为10∶1时,处理效果最佳,二级BAF的出水平均COD、TN分别为114.56、2. 71mg/L,平均去除率分别为92. 40%、94.01%。
关键词:
二级曝气生物滤池,
木薯加工废水,
水力停留时间
Abstract:
The cassava processing wastewater has been treated by using the two-stage biological aerated filter （BAF） on laboratory scale. The removal rates of COD， and total nitrogen， optimum hydraulic retention time （HRT） and air/water ratio are analyzed， so as to investigate the treatment effect of the two-stage biological aerated filter on cassava processing wastewater with high COD. The results show that when the optimum HRT is 8 h, the optimum ratio of air/water is 10∶1， the treatment effect is the best. The average COD and TN of the two-stage BAF effluent are 114.56 mg/L and 2. 71 mg/L respectively， and the average removal rate of COD， TN are 92. 40%，94.01% respectively.
Key words:
two-stage biological aerated filter,
cassava processing wastewater,
hydraulic retention time
中图分类号:
刘伟杰, 袁红莉, 李宝珍, 杨金水, 单超. 二级曝气生物滤池处理高COD木薯加工废水[J]. 工业水处理, 2009, 29(10): 71-74.
Liu Weijie, Yuan Hongli, Li Baozhen, Yang Jinshui, Shan Chao. Treatment of cassava processing wastewater with high COD by two-stage biological aerated filter[J]. INDUSTRIAL WATER TREATMENT, 2009, 29(10): 71-74.