A study on characteristic and mechanism of nitrogen and phosphorus removal in a sequencing batch moving bed biofilm reactor
Introduction As showing in the China 2010 State of the environment bulletin, 26 key state-controlled lakes (or reservoirs) were in different levels of eutrophication, in which the main pollutants were nitrogen and phosphorus. The control of nitrogen and phosphorus emission has been a focus in environment field. Various biological nutrient removal (BNR) processes have been applied to wastewater treatment, such as anaerobic-anoxic-oxic (A2O), the sequencing batch reactor (SBR) as well as the novel process the sequencing batch moving bed biofilm reactor (SBMBBR), etc. The key to the SBMBBR process is the addition of floating media into the sequencing batch reactor (SBR) tanks, which make SBMBBR can take the dual advantage of SBR and biofilm reactor. Because of the spatial heterogeneity, biofilm will form the aerobic, anaerobic and anoxic zone in the direction of mass transfer, which will provides a good environment for simultaneous nitrogen and phosphorus removal. In this study, SBMBBRs effect of nitrogen and phosphorus removal was compared with conventional SBR, and the interrelated mechanisms were studied from different aspects.
SBMBBR Nitrogen and phosphorus removal Mechanism Biofilm structure Biological community PCR-DGGE
NGuofeng Fang Lu ZHOU
School of Environment, Tsinghua University, Beijing 100084, P.R. of China
国际会议
北京
英文
3-4
2011-11-24（万方平台首次上网日期，不代表论文的发表时间）