PVA填料对低温生活污水生物脱氮的影响  

Effect of PVA filler on biological denitrification of low temperature domestic sewage

作　　者：赵亮 张洛红[1] 王鑫浩 成晶晶 ZHAO Liang;ZHANG Luohong;WANG Xinhao;CHENG Jingjing(School of Environmental and Chemical Engineering,Xi′an Polytechnic University,Xi′an 710048,China)

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《西安工程大学学报》2018年第2期181-185,共5页Journal of Xi’an Polytechnic University

基　　金：陕西省科技厅科学研究项目(2015XT-24);陕西省教育厅科学研究计划项目(14JK1297);留学回国人员科研启动基金(教外司留[2010]1561号);陕西省大学生创新创业项目(1533)

摘　　要：为解决北方冬季寒冷天气条件下,生活污水脱氮难的问题,通过模拟CASS工艺中投加聚乙烯醇(PVA)凝胶球填料的方法对低温生活污水进行处理.实验确定的最佳运行条件为:曝气时间2h,回流比300%,连续进水量5L,搅拌速度2r/s.在上述最佳处理条件下,未投加PVA凝胶球时氨氮去除率约为15%,投加PVA凝胶球后氨氮去除率约为65%.实验结果证明PVA凝胶球填料可以有效提高生活污水氨氮的去除率,解决低温生活污水生物脱氮难的问题.The method of simulated CASS process with polyvinyl alcohol(PVA)gel ball packing is used to solve the difficult problem of nitrogen removal from domestic sewage in cold winter in the north.The optimal operating conditions are as follows:the aeration time is 2 h,the reflux ratio 300%,the continuous influent 5 L,and the stirring speed 2 r/s.Under the above treatment conditions,the removal rate of ammonia nitrogen is about 15%without the PVA gel ball the removal rate of ammonia nitrogen is about 65%with PVA gel ball.The experimental results show that PVA gel ball filler can effectively improve the removal rate of ammonia nitrogen in domestic sewage and solve the problem of biological nitrogen removal in low temperature domestic sewage.

关 键 词：PVA凝胶球填料 氨氮去除率 模拟CASS工艺 低温生活污水 

分 类 号：X703.1[环境科学与工程—环境工程]