[1]张存款,丁文川,曾晓岚,等.优化电化学MAP法高效去除垃圾渗滤液中的氨氮[J].中国给水排水,2022,38(9):25-32.
　ZHANGCun-kuan,DINGWen-chuan,ZENGXiao-lan,et al.Optimized Electrochemical Magnesium Ammonium Phosphate Method for Efficient Ammonia Nitrogen Removal from Landfill Leachate[J].China Water & Wastewater,2022,38(9):25-32.
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优化电化学MAP法高效去除垃圾渗滤液中的氨氮

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第9期 页码: 25-32 栏目: 出版日期: 2022-05-01
Title:
Optimized Electrochemical Magnesium Ammonium Phosphate Method for Efficient Ammonia Nitrogen Removal from Landfill Leachate
作者:
张存款1， 丁文川1， 曾晓岚1， 郑良秋2， 邱佳敏1
（1.重庆大学 环境与生态学院，重庆 400030；2.四川省城乡建设研究院，四川 成都 610000）
Author(s):
ZHANG　Cun-kuan1， DING　Wen-chuan1， ZENG　Xiao-lan1， ZHENG　Liang-qiu2， QIU　Jia-min1
（1. College of Environment and Ecology， Chongqing University， Chongqing 400030， China； 2. Sichuan Institute of Urban and Rural Construction， Chengdu 610000， China）
关键词:
电化学;  磷酸铵镁沉淀;  垃圾渗滤液;  氨氮;  pH
Keywords:
electrochemistry;  magnesium ammonium phosphate (MAP) precipitate;  landfill leachate;  ammonia nitrogen;  pH
摘要:
针对垃圾填埋场渗滤液中的高浓度氨氮，研究了基于电化学磷酸铵镁（MAP）法提高氨氮去除率与产物纯度的优化措施。结果表明，电化学MAP反应体系的氨氮去除率随初始pH的升高而降低；电化学MAP法可以在低pH条件下生成MAP沉淀，其中当pH在6.5~8.5之间时MAP生成速率最大且纯度高，这与传统MAP法的最佳pH为8~10有较大区别。采用分批投加KH2PO4可以提高整个体系中MAP的平均生成速率。当处理实际填埋场垃圾渗滤液时，电化学MAP法相比传统MAP法具有更高的氨氮去除率、较低的磷残余浓度以及更高的MAP纯度。
Abstract:
The optimized measures for improving ammonia nitrogen removal efficiency and product purity based on electrochemical magnesium ammonium phosphate (MAP) method were investigated to remove high ammonia nitrogen from landfill leachate. The removal efficiency of ammonia nitrogen in the electrochemical MAP reaction system decreased with the increase of initial pH. The electrochemical MAP method could generate MAP precipitate at low pH, and the MAP precipitate had the highest generation rate and high purity when the pH was between 6.5 and 8.5. The results was quite different from traditional MAP method at the optimal pH in the range of 8-10. The batch addition of KH2PO4 improved the average MAP generation rate in the whole system. When treating real landfill leachate, the electrochemical MAP method had higher ammonia nitrogen removal efficiency, lower phosphorus residual concentration and higher MAP purity than the traditional MAP method.

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[1]郭浩,田一梅,张海亚,等.铁质金属供水管道的内腐蚀研究进展[J].中国给水排水,2020,36(12):70.
　GUO Hao,TIAN Yi-mei,ZHANG Hai-ya,et al.Research Progress on Internal Corrosion of Iron-metal Pipes of Water Distribution Systems[J].China Water & Wastewater,2020,36(9):70.

更新日期/Last Update: 2022-05-01