摘要
采用A/O一体式曝气生物滤池处理生态小区生活污水,以期实现污水的资源化利用.实验研究了滤池的气水比、水力负荷、A/O段体积比和出水回流比等因素对滤池工作性能的影响,分析了滤池硝化反硝化脱氮机理,通过生物膜内微观厌氧环境反硝化过程实现氨氮的最终去除,确定了滤池运行的最佳工作参数,结果表明:气水比18∶1、水力负荷0.3m^3/(m^2·h)、A/O段体积比1∶4、出水回流比50%时,滤池对COD、氨氮的去除率可分别达到78%、90%以上,出水水质达到GB/T 18920-2002标准^([1]).
In order to achieve the resource utilization of sewage,A/O integrated BAF was used to treat sanitary sewage of ecological district.The effect of gas-water ratio,hydraulic loading,A/O volume ratio and reflux ratio on the performance of the filter was studied,and the mechanism of nitrification and denitrification was analyzed.The ultimate removal of ammonia was achieved within the biofilm of anaerobic micro-environment by the denitrification process.The optimum operating parameters of the filter were determined.The results show that when the gas-water ratio was 18：1,the hydraulic loading was 0.3m^3/（m^2·h）,A/O volume ratio was 1：4and the reflux ratio was 50%,the performance of the filter was the best,and the removal rate of COD and ammonia nitrogen was more than 78% and 90%,respectively.The effluent water quality reached ＂ The Reuse of Urban Recycling Water-Water Quality Standard for Urban Miscellaneous Water Consumption＂（GB/T 18920-2002）[1].
出处
《兰州交通大学学报》
CAS
2016年第1期1-5,共5页
Journal of Lanzhou Jiaotong University
基金
国家自然科学基金(51068014)
甘肃省建设厅科技攻关项目(JK2010-26)
关键词
A/O一体式BAF
污水回用
滤池性能
脱氮
A/O integrated BAF
waste water reuse
filter performance
denitrification
