摘要
目的研究A2/O-膜生物反应系统(MBS)工艺中水力停留时间、温度、载体粒径对生活污水化学需氧量(COD)去除率的影响以及粪大肠菌群浓度的变化。方法采用一座6层办公楼的污水,经A2/O-MBS工艺处理,测定水中COD的去除率以及粪大肠菌群浓度,进行检验及分析。结果水力停留时间为12 h、室温下、选择粒径为100～120目的竹炭/聚乙烯醇缩甲醛为载体,经A2/O-MBS污水处理装置处理后,出水COD平均去除率为99.45%;粪大肠菌群下降至23.0个/L,下降率为99.999%。结论 A2/O-MBS工艺对生活污水中的有机物均有较好的去除作用,而且能够有效去除污水中的粪大肠菌群。
Objective To study the influence of anaerobic-anoxic-oxic-membrane biofilm system（A2/O-MBS） on chemical oxygen demand （COD） and fecal coliform concentrations in domestic wastewater. Methods The domestic wastewater was treated with an A2/O-MBS. The concentrations of COD and fecal coliform in the wastewater were ana- lyzed before and after the treatment and the difference was measured. Results Under the condition of bamboo charcoal/ polyvinyl formal composite material of 100-120 mesh diameter as a carder, at normal temperature and 12 hours of hydraulic retention time, the removement rates of COD was 99.45%, and the decrease rate of fecal coliform was 99. 999% for the wastewater after treated with A2/O-MBS. Conclusion The most of the organic matter and fecal coliforms in domestic wastewater could be removed by using the A2/O-MBS.
出处
《中国公共卫生》
CAS
CSCD
北大核心
2013年第3期393-394,共2页
Chinese Journal of Public Health
基金
辽宁省自然科学基金(20102206)
沈阳师范大学实验中心主任基金(Sy201105)
