海水电池处理模拟海水养殖废水  

Treatment of simulant marine aquaculture wastewater using sea-water battery

作　　者：李忠贵[1,2] 张秋婷[1,2] 陈日耀[1,2] 陈晓[1,2] 郑曦[1,2] LI Zhonggui ZHANG Qiuting CHEN Riyao CHEN Xiao ZHENG Xi(College of Environmental Science and Engineering,Fujian Normal University,Fujian Key Laboratory of Pollution Control ＆ Resource Reuse, Fuzhou350007,China)

机构地区：[1]福建师范大学环境科学与工程学院,福州350007 [2]福建省污染控制与资源循环利用重点实验室,福州350007

出　　处：《环境工程学报》2016年第11期6300-6306,共7页Chinese Journal of Environmental Engineering

基　　金：福建省科技厅重点项目(2012H0019);福州市科技局项目(2012-G-116);福建省自然科学基金项目(2013J01034)

摘　　要：随着中国海水养殖业的迅猛发展,海水养殖废水排放量与日俱增,近海水域环境严重恶化。采用海水电池处理模拟海水养殖废水,以镁为电池负极,钛为电池正极。镁负极失去电子产生Mg^(2+),与废水中的NH_4^+、PO_4^(3-)结合生成磷酸铵镁(MgNH_4PO_4·6H_2O,MAP),将废水中的NH_4^+和PO_4^(3-)去除。结果表明,当pH为9.5,氮磷配比为1∶1.1时,氮的去除率可达85.34%,磷的去除率可达98.46%。利用正交实验研究pH、初始氨氮浓度、氮磷比和COD4个因素对氮磷去除的影响,氨氮初始浓度、COD分别对氮、磷的去除影响最大。多个电池串联时,总输出电压是各电池电压之和。With the rapid development of Chinese marine aquaculture,wastewater emissions have increased greatly,causing severe deterioration of the coastal environment. Simulated marine aquaculture wastewater was treated by seawater battery using magnesium and titanium as cathode and anode respectively. Mg^（2 ＋）ions produced on the magnesium cathode were combined with NH_4~＋and PO_4^（3-）ions in the wastewater to generate Mg NH_4PO_4·6H_2O precipitate（ MAP）,thereby removing NH_4~＋and PO_4^（3-）ions. Experimental results showed that the removal rates of ammonia nitrogen and phosphate were as high as 85. 34% and 98. 46% when pH was 9. 5,and the ratio of nitrogen to phosphorus was 1 ∶ 1. 1. The effects of four factors（ pH,initial ammonia concentration,nitrogen：phosphorus ratio,and COD） on the removal of nitrogen and phosphorus were studied by an orthogonal test. Initial ammonia concentration and COD were the most important factors for the removal of nitrogen and phosphorus respectively. When multiple batteries were connected in series,the total output voltage was the sum of each battery voltage.

关 键 词：海水电池 海水养殖废水 氨氮 磷酸盐 磷酸铵镁 

分 类 号：X55[环境科学与工程—环境工程]