摘要
某城镇污水处理厂采用AAO工艺。为达到最佳的除磷脱氮效果,通过小试设备模拟污水厂的正常运行条件,反复试验得出混合液回流比为200%,污泥回流比为75%,污泥停留时间为12 d时的除磷脱氮效果最好。该批参数应用于污水厂运行时,效果明显,氨氮和总磷指标均达标排放。
AAO technology is adopted by a town sewage treatment plant.In order to maximum the effect of dephosphorization and denitrification,the normal operation condition in the sewage plant is imitated by trying out equipment,and through trial and error,the result is that when mixture reflux ratios is 200 %,sludge reflux rate is 75 %,and the retention period of sludge is 12 d,the effect of dephosphorization and denitrification is best.As the series of parameter is applied for operation in sewage plants,the effect is obvious and emission of ammonia nitrogen and total phosphorus reaches the standard.
出处
《建材技术与应用》
2011年第7期4-6,共3页
Research and Application of Building Materials
关键词
污水处理厂
工艺参数
优化
sewage plant
technological parameter
optimization
