Complete Nitrogen Removal through Integrating Anammox and Autotrophic Denitrification in an UASB Reactor  

作　　者：Guo Yadong Bai Xue Yu Haitong Li Xuechen Zhao Chaocheng Liu Chunshuang 

机构地区：[1]College of New Energy,China University of Petroleum,Qingdao 266580 [2]College of Chemical Engineering,China University of Petroleum,Qingdao 266580

出　　处：《China Petroleum Processing & Petrochemical Technology》2020年第1期111-117,共7页中国炼油与石油化工（英文版）

基　　金：This research was supported by the National Natural Science Foundation of China(No.21307160);the Shandong Provincial Natural Science Foundation,China(No.ZR2019MEE038);the Fundamental Research Funds for the Central Universities(19CX02038A);the Open Project of Key Laboratory of Environmental Biotechnology,CAS(Grant No.kf2018003);the Open Project Program of State Key Laboratory of Petroleum Pollution Control(Grant No.PPC2018006),CNPC Research Institute of Safety and Environmental Technology.

摘　　要：Complete nitrogen removal was achieved through integrating anammox and autotrophic denitrification in an UASB reactor.The total nitrogen(TN)removal rate increased stepwise from 0.46 to 0.94 kg-N/(m3·d),with an effluent TN concentration of below 3.0 mg-N/L achieved.The process is relatively insensitive to the nitrite to ammonium ratio,achieving complete nitrogen removal when their ratio in the influent varied in the range of 1.35-1.55.The added S0 quantity in the system could be utilized to adjust the competition between autotrophic denitrifiers and anammox bacteria.High-throughput sequencing technology indicated that Candidatus_Kuenenia and Thiobacillus were the functional strains for anammox and autotrphic denitrification process,respectively,in the studied reactor.This result provides a theoretical and technical basis for the large-scale application of anaerobic ammonium oxidation process.

关 键 词：COMPLETE nitrogen removal ANAMMOX ELEMENTAL SULFUR UASB 

分 类 号：X703[环境科学与工程—环境工程]