电极生物膜处理水产养殖废水氨氮的实验研究  

Denitrification of Ammonia in Aquaculture Wastewater by Biofilm-electrode Reactor

作　　者：庞朝晖[1] 彭彩红[1] 段铁军 

机构地区：[1]湖南工学院,湖南衡阳421002 [2]深圳市建筑设计研究总院有限公司,广东深圳518000

出　　处：《中国农学通报》2014年第5期74-78,共5页Chinese Agricultural Science Bulletin

基　　金：湖南省科技计划项目"电极生物膜处理水产养殖废水中氨氮的实验研究"(2013NK3025);湖南省教育厅科学研究项目"水产养殖废水氨氮处理实验"(12C0660);衡阳市科技计划项目"湘江流域地下水的脱氮实验研究"(2012KS19)

摘　　要：为了探索水产养殖废水中难以降解的氨氮的最佳去除工艺,本实验采用电极生物膜法,在好氧区利用阳极碳棒电解产生的氧,在硝化细菌的作用下使氨氮转化为硝酸盐氮;在缺氧区利用阴极碳棒电解产生的氢,促进反硝化细菌实现反硝化脱氮。结果表明:温度过高或过低,对硝化和反硝化细菌的活性都有一定抑制;C/N比为1时,能实现氨氮与硝酸盐氮的同时去除;电流对硝化和反硝化处理效率有很大的促进作用;同时电流强度随氨氮负荷的增加而增大;水力停留时间越长,氨氮的去除率越高。In order explore the best removal process of refractory ammonia nitrogen in the aquaculture waste water, this experiment adopted biofilm-electrode process. Anode rod used in the aerobic zone produces oxygen, which turned ammonia nitrogen into nitrate nitrogen with the help of nitrobacteria. And Cathode carbon in the anoxic zone electrolyzed hydrogen, which contributed to the realizing denitrification of denitrifying bacteria. The results showed that： too high or too low temperature restrained the activity of nitrifying bacteria and denitrifying bacteria. When the C/N rate was 1, the ammonia nitrogen and nitrate nitrogen could be removed at the same time. The current played a great role in promoting the efficiency of nitrification and denitrification process. And the current intensity increased with the increase of ammonia nitrogen load. The removal rates of ammonia nitrogen would be improved with greater hydraulic power.

关 键 词：电极生物膜法 养殖废水 氨氮 反硝化 水力停留时间 

分 类 号：X703[环境科学与工程—环境工程]