白龙港污水厂出水达到一级A的优化运行中试研究  

Pilot-scale Study on Performance Optimization of Bailonggang WWTP

作　　者：姚海峰[1] 尹明[1] 李田[1] 陆斌[1] 阮大康[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《中国给水排水》2009年第9期29-32,36,共5页China Water & Wastewater

基　　金：上海市建设交通委员会"十一五"重大科研项目(2007-007)

摘　　要：倒置A2/O工艺已广泛应用于新建城镇污水处理厂和老厂脱氮除磷工艺的改造,但在实际运行中常因进水碳源不足和工艺控制不合理,致使出水磷含量无法达到一级A标准。在白龙港污水厂进行中试,研究了混合液回流比、曝气量、进水分流对倒置A2/O工艺除磷效果的影响。试验结果表明,对碳源含量偏低的进水,在保证出水氮浓度达标的前提下适当降低混合液回流比和曝气量,并采用进水分流措施可有效提高除磷效果,出水水质可满足一级A标准的要求。The inverted A^2/O process has been widely adopted in newly constructed wastewater treatment plants and the reconstruction of nitrogen and phosphorus removal processes. In practice, the effluent phosphorus does not always meet A level of the national discharge standard due to unreasonable operation control and low carbon source in the influent. Using influent from the Bailonggang WWTP, a pilot-scale study was carried out to investigate the impact of internal return ratio, aeration rate and influent flow distribution on phosphorus removal in the inverted A^2/O process. The results indicate that when the internal return ratio and aeration rate are lowered, and influent flow distribution are adopted, better phosphorus removal efficiency is achieved on the premise of adequate TN removal from the influent with lower carbon source. The effluent quality is able to meet A level of the national discharge standard.

关 键 词：倒置A2/O工艺 碳源 除磷 混合液回流比 曝气量 

分 类 号：X703[环境科学与工程—环境工程]