CAST工艺脱氮的研究

在CAST工艺中，通过控制活性污泥工艺的反应环境可以使氮的去除过程优化。将传统的处理方法和周期循环运行过程的处理效果做长时间的比较，通过检测比较硝化速率，同时硝化反硝化以及除磷效果，可知，当运行负荷相同时，周期循环运行过程是一种很有优势的污水处理方法。

Nitrogen Removal in Cyclic Activated Sludge Technology

The practice of manipulating activated sludge reaction environments to obtain maximum nitrogen removal has been optimized by using Cyclic Activated Sludge Technology (CAST). The efficiencies of conventional and cyclic processes were compared through parallel operation over a one-year period. Through examination and comparison of the nitrification rates, the stability of (co-current) nitrification /denitrification and the biological phosphorus removal,it was found that the cyclic system was demonstrably (superior) in treatment efficiency when operated at the same loading conditions as the conventional process.