Removal of Ammonia Nitrogen from Coking Wastewater by Struvite Precipitation

摘要：

　　This study investigated a wastewater treatment technique based on natural minerals.Ammonia nitrogen of coking wastewater was removed by chemical precipitation method using magnesia as a low-cost source of magnesium.In the optimum condition,86.6% of initial N-NH4+ was removed with a S/L rate of 22g/L and reaction time of 24h.Almost all of phosphate was removed,the residual concentrations of N-NH4+,P-PO43-and Mn2+ were 297mg/L,0.4mg/L and 11mg/L respectively,which is necessary for COD removal by following biological treatment process.Struvite recovered may be used as a potential slow-release fertilizer.

关键词： ammonia nitrogen precipitation struvite magnesia

作者: HUANG Xiaoming PAN Min CHEN Tianhu CHEN Guoyuan

作者单位: Water Resources and Environmental Institute, Xiamen University of Technology, Xiamen 361005 School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, Chi School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, Chi

会议类型: 国际会议

会议名称: The 4th International Conference on Environmental Technology and Knowledge Transfer(第四届亚欧环境技术及知识转化国际研讨会(2012ICET))

会议地点: 合肥

会议语种:英文

页码: 312-315

在线出版日期: 2012-05-24（万方平台首次上网日期，不代表论文的发表时间）