文献类型：期刊文献

英文题名：Nutrients removal from swine wastewater by struvite precipitation recycling technology with the use of Mg-3(PO4)(2) as active component

作者：Huang, Haiming Liu, Jiahui Wang, Sufeng Jiang, Yang Xiao, Dean Ding, Li 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, 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, Qinhuangdao 066004, Peoples R China

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

年份：2016

卷号：92

起止页码：111-118

外文期刊名：ECOLOGICAL ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000376732000015)】；

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 Nos. E2014203080 and B2012203005), the Outstanding Young Scholars Project of Colleges and Universities of Hebei province (Grant No. BJ2014059), and China Postdoctoral Science Foundation Funded Project (Grant No. 2015M580215).

语种：英文

外文关键词：Nutrients; Swine wastewater; Recycling; Magnesium phosphate; Struvite

摘要：The recovery and removal of nutrients from swine wastewater was investigated by employing a struvite recycling process, which used magnesium phosphate (MP) as the active component. In this study, the effect of organic matters (sodium alginate, bovine albumin and acetic acid) in swine wastewater on the crystallization of struvite and the feasibility of MP as the phosphate and magnesium sources of struvite precipitation were first evaluated. The results demonstrated that sodium alginate and bovine albumin could slightly influence the crystallization of struvite while acetic acid did not. Using MP as the phosphate and magnesium sources of struvite precipitation could achieve a removal efficiency of the total ammonia nitrogen (TAN) close to that of using pure chemicals (MgCl2 center dot 6H(2)O and Na2HPO4 center dot 12H(2)O). The results of struvite pyrgenation revealed that the optimal pyrogenation condition of struvite was at Mg(OH)(2):NH4+ 1:1 and temperature 150 degrees C for 3 h, at which the main pyrogenation product was MP. Recycling the pyrolysate at pH 8.5 could achieve a TAN removal of 78%. When the pyrolysate was recycled for six cycles, the TAN removal efficiency could be maintained above 70%, and 67% of the struvite precipitation cost could be reduced compared to using pure chemicals. (C) 2016 Elsevier B.V. All rights reserved.