Related Experiment Video
Updated: Jun 24, 2026

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
Factors affecting simultaneous nitrification and de-nitrification (SND) and its kinetics model in membrane bioreactor
Sheng-bing He1, Gang Xue, Bao-zhen Wang
1School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China. heshengbing@sina.com
Abstract:
Experiments have been carried out to investigate the effect of biological factors such as dissolved oxygen (DO), food/microorganism (F/M) ratio, carbon/nitrogen (C/N) ratio and pH on performance of SND in membrane bioreactor (MBR). It was found that a low DO was advantageous to SND on condition that nitrification was not inhibited, while F/M ratio and C/N ratio have reverse effects on SND, and pH should also be controlled in a suitable range. Based on the conventional activated sludge model, a deduction was conducted to illustrate that SND could take place from the theoretical aspect, and it was proved that high organics was effective in improving SND. In addition, a kinetic model for SND was constituted on the basis of batch test result, and the simulation nitrate saturation coefficient K(NO)(3) was much higher than that in a single-sludge wastewater treatment system.
More Related Videos
Related Concept Videos
Microbes and the Nitrogen Cycle
Bioreactor Controls-II
Multi-Step Reactions
Bioreactor Design and Operational System
Bioreactor Controls-I
Inorganic Nitrogen Assimilation

