Nitrous oxide emissions from the aeration tank of a wastewater treatment plant with conventional activated sludge process

Quimica nova

Oliveira, Jaime L. M.¹  Kligerman, Débora C.²  Ribeiro, Renato P.³  Mello, William Z. de³  Andrade, Samara A.³  Brotto, Ariane C.³  Alvim, Renata B.³ 

[1] Companhia Estadual de Águas e Esgotos, Rio de Janeiro, Brasil;Fundação Oswaldo Cruz, Rio de Janeiro, Brasil;Universidade Federal Fluminense, Niterói, Brasil

关键词: nitrous oxide;    wastewater treatment plant;    activated sludge.;   

DOI  :  10.1590/S0100-40422013000700013

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Nitrous oxide (N2O)emissions were measured monthly from January to June 2010 in the aeration tankof a wastewater treatment plant (WWTP) in Southeast Brazil. Emissions were lowerin summer than winter and were positively related with influent ammonium (NH4+)concentration. The average N2O emission was 1.11 kg N day-1corresponding to 0.02% of the influent total nitrogen load. The average emissionfactor calculated for the population served was 2.5 lower than that proposedby the Intergovernmental Panel on Climate Change (IPCC) for inventories of N2Oemissions from WWTPs with controlled nitrification and denitrification processes.

【 授权许可】

CC BY