文献类型：期刊文献

英文题名：Modelling of simultaneous nitrogen and thiocyanate removal through coupling thiocyanate-based denitrification with anaerobic ammonium oxidation

作者：Chen, Xueming[1];Yang, Linyan[2];Sun, Jing[3,4];Dai, Xiaohu[3,4];Ni, Bing-Jie[3,4]

机构：[1]Tech Univ Denmark, Proc & Syst Engn Ctr PROSYS, Dept Chem & Biochem Engn, DK-2800 Lyngby, Denmark;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[3]Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2019

卷号：253

起止页码：974

外文期刊名：ENVIRONMENTAL POLLUTION

收录：;EI(收录号：20193007240328);WOS:【SCI-EXPANDED(收录号:WOS:000483406700097)】；

基金：This work was partially supported by the National Natural Science Foundation of China (No. 51578391 and 51538008) and the State Key Laboratory of Pollution Control and Resource Reuse Foundation (No. PCRRK18007). The authors are grateful to the research collaboration.

语种：英文

外文关键词：Thiocyanate-based autotrophic denitrification; Anaerobic ammonium oxidation; Microbial competition; Synergy; Modelling

摘要：Thiocyanate (SCN-)-based autotrophic denitrification (AD) has recently been demonstrated as a promising technology that could be integrated with anaerobic ammonium oxidation (Anammox) to achieve simultaneous removal of nitrogen and SCN-. However, there is still a lack of a complete SCN--based AD model, and the potential microbial competition/synergy between AD bacteria and Anammox bacteria under different operating conditions remains unknown, which significantly hinders the possible application of coupling SCN--based AD with Anammox. To this end, a complete SCN--based AD model was firstly developed and reliably calibrated/validated using experimental datasets. The obtained SCN--based AD model was then integrated with the well-established Anammox model and satisfactorily verified with experimental data from a system coupling AD with Anammox. The integrated model was lastly applied to investigate the impacts of influent NH4+-N/NO2--N ratio and SCN- concentration on the steadystate microbial composition as well as the removal of nitrogen and SCN-. The results showed that the NH4+-N/NO2--N ratio in the presence of a certain SCN- level should be controlled at a proper value so that the maximum synergy between AD bacteria and Anammox bacteria could be achieved while their competition for NO2- would be minimized. For the simultaneous maximum removal (>95%) of nitrogen and SCN-, there existed a negative relationship between the influent SCN- concentration and the optimal NH4+-N/NO2--N ratio needed. (C) 2019 Elsevier Ltd. All rights reserved.