Removal of nitrogen from municipal wastewater by denitrification using a sulfur-based carrier: A pilot-scale study

Woo Yun Chul; Lee Jeong Jun; Kim Han-Seung

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Removal of nitrogen from municipal wastewater by denitrification using a sulfur-based carrier: A pilot-scale study

机译：Removal of nitrogen from municipal wastewater by denitrification using a sulfur-based carrier: A pilot-scale study

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In the present study, to improve nitrate removal rate, a sulfur-based carrier was applied for autotrophic denitrification, and the removal rate was evaluated for advanced wastewater treatment without adding any external organic carbon source. Based on the results, an increased PAC concentration affected the removal efficiency of NO3--N, and the optimal concentration of PAC was at 15 wt%. During the 60 d operation of a pilot process with a capacity of 1 m(3)/d, the removal of T-N was 81.2% and 50.2% in reactors with and without sulfur-based carrier, respectively. The removal efficiency of NO3--N exhibited a similar trend to that of T-N. According to the results, the removal of T-N and No-3(-)-N was noticeably enhanced to approximately 30% by adding a sulfur-based carrier to the A(2)O pilot system. In addition, microbial community in both reactors was dominated by Thiobacillus, which is an autotrophic microorganism, displaying a dominant denitrification status. The present study compared the relative efficiencies of nitrate removal in A(2)O pilot reactors with and without sulfur-based carriers for its successful application in real-scale autotrophic denitrification.

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来源
《Chemosphere》 |2022年第6期|133969.1-133969.10|共10页
作者
Woo Yun Chul; Lee Jeong Jun; Kim Han-Seung;
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作者单位

Korea Inst Civil Engn & Bldg Technol KICT, Dept Environm Res, 283 Goyang Daero, Goyang Si 10223, Gyeonggi Do, South Korea|Univ Sci & Technol UST, Dept Civil & Environm Engn, 217 Gajeong Ro, Daejeon 34113, South Korea;

BKT Inc, 25 Yuseong Daero,1184 Beon Gil, Daejeon 34109, South Korea;

Myongji Univ, Dept Environm Engn & Energy, 116 Myongji Ro, Yongin 17058, Gyeonggi Do, South Korea;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
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关键词
Sulfur-based carrier; A(2)O process; Pilot-scale; Autotrophic denitrification; Thiobacillus;

Removal of nitrogen from municipal wastewater by denitrification using a sulfur-based carrier: A pilot-scale study

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