污泥回流比对cass工艺处理效果的影响

The Effect of Sludge Return Ratio on CASS process

CASS工艺是近年来发展较快的污水处理工艺．并取得了较好的处理效果。介绍了CASS工艺的处理流程和污泥回流在污水处理中的作用，重点阐述了污泥回流比对COD、氨氮处理效果的影响，在保证高效脱氮除磷效果前提下，选择25％的污泥回流比最为经济适用。

CASS process is a rapid developing sewage treatment process in recent years, and obtain better treatment effect. Introduce the process of CASS process and the effect of sludge return ratio.Focuses on the effect of sludge return ratio on COD and ammonia nitrogen. To ensure efficient nitrogen and phosphorus removal, premise select 25% of the return sludge than the most affordable.