环境工程学报2013，Vol.7Issue(4)：1336-1340,5.
微孔曝气变速氧化沟循环特性的中试研究
Pilot study on flow characteristics of a variable-velocity oxidation ditch with fine bubble
摘要
Abstract
Oxidation ditch process with same ditch width and flow velocities was widely applied to process of nitrogen and phosphorus removal, which caused anoxic and fine bubble aeration sections with the same velocities based on flow balance. However, the same high velocities in bubble aeration section with anoxic section couldn' t meet energy-saving. To explore fine bubble oxidation ditch with variable velocities and its feasibility, a novel pilot-scale variable speed oxidation ditch was established and its flow-velocity distribution were measured a-long the ditch. Result showed that the average velocities of 0. 4 m and 1.2m channel widths were about 0.15 m/ s and 0.07 m/s, respectively being slightly less than the theory ratio 3: 1 and variable velocities in oxidation ditch was feasible. It also showed that separating activated sludge with water hand never happened by through measuring sludge settlement ratios and SS at points tending to settle and observing for a long time.关键词
氧化沟/微孔曝气/变速/污泥沉降比/污泥浓度Key words
oxidation ditch/ fine bubble/ variable velocity/ sludge settlement ratio/ SS分类
资源环境引用本文复制引用
杨亚红,彭党聪,李磊,郑阳光,韩芸..微孔曝气变速氧化沟循环特性的中试研究[J].环境工程学报,2013,7(4):1336-1340,5.基金项目
国家水体污染控制与治理重大专项(2009ZX07317-009) （2009ZX07317-009）
