Simultaneous biological removal of nitrate, sulfide and ammonia from wastewater and its mechanism - Details

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EI PKU CSCD

Abstract：

Simultaneous　removal　of　nitrate,　sulfide　and　ammonia　could　be　realized　at　HRT　of　12　h,　temperature　of　30±2　and　influent　pH　of　7.5.　The　removal　rates　were　up　to　95%,　90%　and　99%　for　ammonia,　nitrate　and　sulfide　at　influence　concentrations　of　22-35　mg　NL-1,　22-35　mg　NL-1　and　50-90　mg　SL-1,　respectively.　Most　of　sulfide　removed　was　converted　to　elemental　sulfur　(S0)　and　the　conversion　rate　was　as　high　as　89%.　Batch　experiment　results　indicated　that　presence　of　sulfide　could　enhance　simultaneous　removal　of　nitrate　and　ammonia.　The　results　of　this　study　provided　an　innovative　idea　for　the　development　of　sulfide-　and　nitrogenous　contaminants-　laden　wastewater　treatment　technology.　©　All　Rights　Reserved.

Keyword：

Wastewater treatment Sulfur compounds Nitrogen removal Ammonia Nitrates

Author Community：

[ 1 ] [Liu, Chunshuang]School of Chemical Engineering, China University of Petroleum, Qingdao; Shandong; 266580, China
[ 2 ] [Li, Jiaguo]School of Chemical Engineering, China University of Petroleum, Qingdao; Shandong; 266580, China
[ 3 ] [Yan, Laihong]School of Chemical Engineering, China University of Petroleum, Qingdao; Shandong; 266580, China
[ 4 ] [Zhao, Dongfeng]School of Chemical Engineering, China University of Petroleum, Qingdao; Shandong; 266580, China
[ 5 ] [Ma, Bin]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [Li, Xiang]School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou; Jiangsu; 215011, China
[ 7 ] [Wang, Aijie]State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, Harbin; Heilongjiang; 150090, China