Removal of Ammonia Nitrogen from Wastewater by Modified Spent Grains

摘要：

The test of removal of ammonia nitrogen in wastewater with spent grains modified by NaCl was discussed. The effects of density of NaCl solution, pH, contact time, initial ammonia concentration on the removal were investigated. Density of NaCl solution and pH showed significant influence on the removal of ammonia nitrogen. The largest removal was obtained at pH 8 in 30 min by 20 g/L spent grains modified by 5% NaCl solution. In the end, metallurgical wastewater containing high concentration of ammonia nitrogen was treated by modified spent grains. With the initial ammonia concentration 4500 mg/L at pH 8, ammonia was reduced to 310 mg/L in 40 min by 40 g/L modified spent grains. It could be proposed that 5% NaCl modified spent grains were an effective adsorbent for the removal of ammonia nitrogen from wastewater.

关键词： ammonia nitrogen spent grains modification wastewater treatment

作者: CHEN Yunnen NIE Jinxia

作者单位: School of Resource and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 1258-1261

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）