The development of a reverse anammox sequencing partial nitrification process for simultaneous nitrogen and COD removal from wastewater.
In order to achieve simultaneous removal of nitrogenous and organic pollutants, a novel reverse anammox-partial nitrification nitrogen removal process was developed. During steady operation, the maximum nitrogen and COD (chemical oxygen demand) removal efficiencies were over 90%, with influent NH4(+)-N and COD concentrations of 300 and 100mgL(-1). The optimum recycle ratio of Membrane bioreactor (MBR for partial nitrification) and fixed bed reactor (anammox) for this process was recommended as 3 due to increasingly larger recycle ratio caused slight increase in TN (total nitrogen) removal efficiency. Additionally, the steady nitrogen removal rate was obtained at 0.92-1.03kgNm(-3)day(-1). Considering its great potential in nitrogen removal, this reverse process will be revealing for the study of anammox technique.
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China. Electronic address: wanggw@dlpu.edu.cn.
Xiaochen
X
Xu
Beijing Water Business Doctor Co., Ltd., Beijing 100875, PR China.
Yuan
Y
Xue
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
Dong
D
Wang
School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian 116034, PR China.
Guowen
G
Wang
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
Fenglin
F
Yang
D000641:Ammonia / Q000378:metabolism; D000693:Anaerobiosis; D057919:Biological Oxygen Demand Analysis / Q000379:methods; D019149:Bioreactors; D008567:Membranes, Artificial; D058465:Nitrification / Q000502:physiology*; D009584:Nitrogen / Q000378:metabolism*; D010084:Oxidation-Reduction; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*
D008567:Membranes, Artificial; D000641:Ammonia; D009584:Nitrogen
Anammox; MBR; Partial nitrification; Simultaneous nitrogen and COD removal