Evaluation of the correlation between ammonia nitrogen and p-toluidine using sequencing batch reactor treating synthetic p-toluidine wastewater

Article type: Research Article

Authors: ZHANG, Bo | CHEN, Jin-long | WANG, Fan | ZHANG, Wei-ming | ZHANG, Quan-xing

Affiliations: Department of Environmental Engineering, Nanjing University, Nanjing 210093, China

Note: [] Corresponding author. E-mail: zhangbo7607@sohu.com

Abstract: This paper presents lab-scale experiment carried out to evaluate the correlation between ammonia nitrogen (NH_3-N) and p-toluidine using sequencing batch reactor treating synthetic p-toluidine wastewater. The profiles of NH_3-N and p-toluidine were traced under the concentration of sucrose in the influent varied from 0 to 500 mg/L, aerated airflow varied from 0.6 to 1.2 L/min and temperature varied from 10 to 25°C, respectively. The results showed that the concentration of NH_3-N turned from increase to decrease when p-toluidine was nearly completely biodegraded, so the profile of NH_3-N could clearly indicate the endpoint of p-toluidine biodegradation. And the profile of NH_3-N was not influenced by the sucrose in the influent, aerated airflow and temperature. It is showed that using ammonia nitrogen as monitoring and control parameter is feasible and reliable and has promising application in amine wastewater treatment by SBR.

Keywords: sequencing batch reactor, correlation, ammonia nitrogen, p-toluidine, biodegradation

Journal: Journal of Environmental Sciences, vol. 18, no. 2, pp. 259-262, 2006