水力负荷和HRT对前置反硝化BAF工艺的影响  

Impact of Hydraulic Load and HRT on Treatment Efficiency of Pre-denitrification BAF Process

作　　者：韦彦斐[1] 张刚[1] 周童 宁靓[3] 

机构地区：[1]浙江省环境保护科学设计研究院,浙江杭州310007 [2]浙江省环境工程有限公司,浙江杭州310012 [3]马鞍山市华骐环保科技发展有限公司,安徽马鞍山243061

出　　处：《中国给水排水》2011年第3期94-97,共4页China Water & Wastewater

摘　　要：以实际生活污水为考察对象,研究了水力负荷与水力停留时间(HRT)对前置反硝化曝气生物滤池(BAF)工艺处理效果的影响。结果表明,随着水力负荷的增加、HRT的缩短,系统对COD、氨氮和总氮的去除率呈先上升再下降的趋势。在本试验工况下,综合考虑出水水质,建议前置反硝化曝气生物滤池工艺的水力负荷<3.40 m/h、HRT>17.25 min,此时系统对COD、氨氮和总氮的去除率分别大于80%、85%和65%,出水水质能达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级标准。Using actual domestic sewage as the study object, the impact of hydraulic load and hydraulic retention time （HRT） on treatment efficiency of pre-denitrification biological aerated filter （BAF） process was studied. The experimental results indicate that with increasing hydraulic load and decreasing HRT, the removal rates of COD, NH3 - N and TN increase first and then decrease. Under this experi- mental condition, based on an overall consideration of effluent quality, the hydraulic load and HRT of pre-denitrification BAF process are below 3.40 m/h and over 17.25 min respectively, and the removal rates of COD, NH3 -N and TN are over 80%, 85% and 65% respectively. The effluent quality meets the first level criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB 18918-2002）.

关 键 词：曝气生物滤池 前置反硝化 水力负荷 水力停留时间 

分 类 号：X703[环境科学与工程—环境工程]