文献类型：期刊文献

英文题名：Repeatedly using the decomposition product of struvite by ultrasound stripping to remove ammonia nitrogen from landfill leachate

作者：Huang, Haiming Zhang, Peng Xiao, Jing Xiao, Dean Gao, Faming

第一作者：Huang, Haiming

通信作者：Huang, HM[1]

机构：[1]Yanshan Univ, Sch Environm & Chem Engn, Hebei Key Lab Appl Chem, 438 Hebei Ave, Qinhuangdao 066004, Peoples R China;[2]Guizhou Inst Technol, Coll Resource & Environm Engn, Guiyang 550003, Peoples R China

第一机构：Yanshan Univ, Sch Environm & Chem Engn, Hebei Key Lab Appl Chem, 438 Hebei Ave, Qinhuangdao 066004, Peoples R China

通信机构：corresponding author), Yanshan Univ, Sch Environm & Chem Engn, Hebei Key Lab Appl Chem, 438 Hebei Ave, Qinhuangdao 066004, Peoples R China.

年份：2017

卷号：38

起止页码：622-628

外文期刊名：ULTRASONICS SONOCHEMISTRY

收录：;EI(收录号：20164803059952);Scopus(收录号：2-s2.0-84996928509);WOS:【SCI-EXPANDED(收录号:WOS:000404814700064)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grant No. 51408529), the Natural Science Foundation of Hebei Province (Grant No. E2014203080), the Outstanding Young Scholars Project of Colleges and Universities of Hebei province (Grant No. BJ2014059), and China Postdoctoral Science Foundation Funded Project (Grant Nos. 2015M580215, 2015M581319 and 2016T90215).

语种：英文

外文关键词：Landfill leachate; Ammonia nitrogen; Struvite; Ultrasound stripping; Recycling

摘要：In this study, the decomposition of struvite by ultrasound stripping and the recycle use of the decomposition product for the treatment of landfill leachate were investigated. The results indicated that when the decomposition of struvite by ultrasound stripping was performed at 55 degrees C for 40 min, the ammonium in the struvite could be almost completely eliminated from the solution system. The characterization analysis showed that magnesium phosphate and the dissolved phosphate ions were the main active derivatives. Approximately 90% of the total ammonia nitrogen (TAN) in landfill leachate can be removed by reusing the decomposition product at pH 9 for 60 min. Repeated use of the struvite decomposition product revealed that the TAN removal efficiency decreased with an increase in the number of recycles. However, in the process of multiple recycling, about 90% of TAN removal could be maintained by supplementing a certain amount of the preformed struvite to the solution for every recycle. An economic analysis demonstrated that 79.3% of the treatment cost could be saved by the proposed process compared to the non-recycling process. (C) 2016 Elsevier B.V. All rights reserved.