Skip to Main content Skip to Navigation
Journal articles

New urban wastewater treatment with autotrophic membrane bioreactor at low chemical oxygen demand/N substrate ratio

Abstract : The potential for total nitrogen removal from municipal wastewater has been evaluated in an autotrophic membrane bioreactor running with a low chemical oxygen demand (COD)/N ratio to simulate its combination with an upstream physicochemical process that retains a large proportion of organic matter. The tests were conducted in a laboratory scale submerged membrane bioreactor loaded with a synthetic influent. Nitrogen loading rate was 0.16 kg(N-NH4+).m(-3).d(-1) and sodium acetate was added as a carbon source. Results have shown that nitrogen elimination can reach 85% for a COD/N ratio of 5, with COD removal exceeding 97%. However, a COD/N ratio of 3.5 was found to be the limiting factor for successfully reaching the overall target value of 10 mgN.L-1 in the effluent. Nevertheless, low COD/N ratios make it possible to work with low total suspended solid concentrations in the bioreactor, which greatly facilitates membrane fouling control by a simple aeration and backwashing strategy.
Document type :
Journal articles
Complete list of metadata

https://hal.inrae.fr/hal-02640314
Contributor : Migration Prodinra <>
Submitted on : Thursday, May 28, 2020 - 2:24:07 PM
Last modification on : Tuesday, December 8, 2020 - 10:32:46 AM

Identifiers

Citation

Y. Yang, Geoffroy Lesage, Maialen Barret, Nicolas Bernet, Alain Grasmick, et al.. New urban wastewater treatment with autotrophic membrane bioreactor at low chemical oxygen demand/N substrate ratio. Water Science and Technology, IWA Publishing, 2014, 69 (5), pp.960-965. ⟨10.2166/wst.2013.814⟩. ⟨hal-02640314⟩

Share

Metrics

Record views

51