摘要
为了考察曝气生物滤池(Biological Aerated Filter,BAF)作为深度水处理技术运行时的最优控制参数,选用低碳氮比的生活污水作为研究对象,设计了两个阶段,8组实验,考察了气水比和水力负荷对BAF工艺运行效能的影响.结果表明:进水流量11.7 L/h时,气水比在1∶1~2∶1的范围内,BAF对氨氮、CODMn以及浊度的去除效果较好,平均去除率分别可达到79.34%、24.93%、70.86%;在气水比为2∶1时,水力负荷0.55~0.97 m^(3)/(m^(2)·h)的范围内,对氨氮、CODMn、浊度的去除效果较好,平均去除率分别为78.27%、35.13%、70.56%.经综合分析最终确定该装置运行最佳气水比为2∶1,水力负荷定为0.97 m^(3)/(m^(2)·h).该研究结果可为曝气生物滤池处理低碳氮比生活污水提供一些基础数据.
In order to investigate the optimal control parameters for the operation of Biological Aerated Filter(BAF)as a deep water treatment technology,domestic sewage with low carbonto-nitrogen ratio was selected as the research object.Two stages and eight groups of experiments were designed to examine the effects of gas-to-water ratio and hydraulic loading on the operating efficiency of the BAF process.The results showed that when the influent flow rate was 11.7 L/h and the gas-to-water ratio was in the range of 1:1 to 2:1,the BAF had a better effect on the removal of ammonia nitrogen,COD n,and turbidity,with the average removal rates reaching 79.34%,24.93%,and 70.86%,respectively.When the gas-to-water ratio was 2:1,and the hydraulic loading was in the range of 0.55-0.97 m^(3)/(m^(2).h),the removal effect for ammonia nitrogen,CODMn,and turbidity is satisfactory,with the average removal rates of 78.27%,35.13%,and 70.56%,respectively.After comprehensivee analysis,it was finally determined that the optimal gas-to-water ratio for the operation of the device was 2:1,and the hydraulic loading was set at 0.97 m^(3)/(m^(2).h).The results of this study can provide some basic data for the treatment of domestic sewage with low carbon-to-nitrogen ratio in the biological aerated filter.
作者
王进喜
张淑霞
WANG Jinxi;ZHANG Shuxia(School of Chemical Engineering,Lanzhou University of Arts and Science,Lanzhou 730010,China)
出处
《西安文理学院学报(自然科学版)》
2025年第2期76-82,共7页
Journal of Xi’an University(Natural Science Edition)
基金
甘肃省自然基金项目(20JR10RA145)
国家自然基金项目(41967043)。
关键词
低碳氮比生活污水
曝气生物滤池
气水比
水力负荷
low carbon-to-nitrogen ratio domestic sewage
biological aerated filter
gas-towater ratio
hydraulic loading
