Mathematical modeling of simultaneous carbon-nitrogen-sulfur removal from industrial wastewater.
A mathematical model of carbon, nitrogen and sulfur removal (C-N-S) from industrial wastewater was constructed considering the interactions of sulfate-reducing bacteria (SRB), sulfide-oxidizing bacteria (SOB), nitrate-reducing bacteria (NRB), facultative bacteria (FB), and methane producing archaea (MPA). For the kinetic network, the bioconversion of C-N by heterotrophic denitrifiers (NO3-→NO2-→N2), and that of C-S by SRB (SO42-→S2-) and SOB (S2-→S0) was proposed and calibrated based on batch experimental data. The model closely predicted the profiles of nitrate, nitrite, sulfate, sulfide, lactate, acetate, methane and oxygen under both anaerobic and micro-aerobic conditions. The best-fit kinetic parameters had small 95% confidence regions with mean values approximately at the center. The model was further validated using independent data sets generated under different operating conditions. This work was the first successful mathematical modeling of simultaneous C-N-S removal from industrial wastewater and more importantly, the proposed model was proven feasible to simulate other relevant processes, such as sulfate-reducing, sulfide-oxidizing process (SR-SO) and denitrifying sulfide removal (DSR) process. The model developed is expected to enhance our ability to predict the treatment of carbon-nitrogen-sulfur contaminated industrial wastewater.
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China.
Xi-Jun
XJ
Xu
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China. Electronic address: echo110244@126.com.
Chuan
C
Chen
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China.
Ai-Jie
AJ
Wang
Advanced Water Management Centre (AWMC), The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia.
Bing-Jie
BJ
Ni
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China.
Wan-Qian
WQ
Guo
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China.
Ye
Y
Yuan
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China.
Cong
C
Huang
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China.
Xu
X
Zhou
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China.
Dong-Hai
DH
Wu
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China; Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
Duu-Jong
DJ
Lee
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2650, 73 Huanghe Road, Nangang, Harbin, Heilongjiang 150090, China. Electronic address: rnq@hit.edu.cn.
Nan-Qi
NQ
Ren
D001673:Biodegradation, Environmental; D002244:Carbon / Q000032:analysis*; D007220:Industrial Waste / Q000032:analysis; D059013:Microbial Consortia; D008962:Models, Theoretical; D009584:Nitrogen / Q000032:analysis*; D013455:Sulfur / Q000032:analysis*; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
D002244:Carbon; D007220:Industrial Waste; D009584:Nitrogen; D013455:Sulfur; D062065:Wastewater; D014874:Water Pollutants, Chemical
Carbon; Industrial wastewater treatment; Mathematical modeling; Nitrogen; Sulfur