A novel mechanistic model for nitrogen removal in algal-bacterial photo sequencing batch reactors.

Lai Peng, H H Ngo, W S Guo, Y Liu, D Wang, S Song, W Wei, L D Nghiem, B J Ni

Journal: Bioresource technology 2018;267():502-509

PMID: 30041144

Full Text on Elsevier Science View on PubMed

Abstract

A comprehensive mathematical model was constructed to evaluate the complex substrate and microbial interaction in algal-bacterial photo sequencing batch reactors (PSBR). The kinetics of metabolite, growth and endogenous respiration of ammonia oxidizing bacteria, nitrite oxidizing bacteria and heterotrophic bacteria were coupled to those of microalgae and then embedded into widely-used activated sludge model series. The impact of light intensity was considered for microalgae growth, while the effect of inorganic carbon was considered for each microorganism. The integrated model framework was assessed using experimental data from algal-bacterial consortia performing sidestream nitritation/denitritation. The validity of the model was further evaluated based on dataset from PSBR performing mainstream nitrification. The developed model could satisfactorily capture the dynamics of microbial populations and substrates under different operational conditions (i.e. feeding, carbon dosing and illuminating mode, light intensity, influent ammonium concentration), which might serve as a powerful tool for optimizing the novel algal-bacterial nitrogen removal processes.

Address: School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China.; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.; College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China.; Advanced Water Management Centre, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia.; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia. Electronic address: [email protected].

DOI: 10.1016/j.biortech.2018.07.093

Link outs

Free resources

Other Literature Sources:

Subscription / membership required

Full Text Sources:

https://linkinghub.elsevier.com/retrieve/pii/S0960...

MeSH Terms: Bioreactors, Denitrification, Nitrification, Nitrites, Nitrogen, Sewage