SBR法处理低碳源城市污水除磷脱氮效果及规律研究

Study on law and effect of phosphorus and nitrogen removal from municipal wastewater with low carbon source by sequencing batch reactor (SBR)

介绍了用SBR法(序批式活性污泥法)处理低碳源城市污水,研究了生物除磷效果和好氧反硝化脱氮效果及其影响因素．试验结果表明,磷的出水质量浓度低于0．8 mg／L,去除率达到92％-98％;磷的厌氧释放是好氧吸收的前提条件,而且厌氧释磷量和好氧吸磷量存在线性关系;DO是影响好氧反硝化的主要因素,当DO=2 mg／L时,总氮的去除率最大．

The effect and the factors having influence on biological removal of phosphorus and aerobic denitrification of nitrogen are studied during the experimental treatment of municipal wastewater with low carbon source by SBR. The results show that effluent quality of phosphorus can be 0.8 mg/L below with the removal rate from 92% to 98%,the phosphorus release is the prerequisite for aerobic excess P-uptake, furthermore they exist linearity relation, and DO is the key factor to affect nitrogen removal. It is discovered that the TN removal ratio reaches maximum when DO = 2.0 mg/L.