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=8 h,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、2.71 mg/L,平均去除率分别为92.40%、94.01%。
The cassava processing wastewater has been treated by using the two-stage biological aerated filter （BAF） on laboratory scale. The removal rates of COl）, 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.
出处
《工业水处理》
CAS
CSCD
北大核心
2009年第10期71-74,共4页
Industrial Water Treatment
基金
国家“十一五”科技支撑计划子课题项目(2006BAD07A01)
国家自然科学基金项目(30700010)
关键词
二级曝气生物滤池
木薯加工废水
水力停留时间
two-stage biological aerated filter
cassava processing wastewater
hydraulic retention time
