conventional activated sludge

例句：

1. 1.Conventional activated sludge is a common method for treating wastewater in industrial plants.
   传统活性污泥是工业工厂处理废水的常见方法。
2. 2. The conventional activated sludge process helps to remove pollutants from the water.
   传统活性污泥过程有助于从水中去除污染物。
3. 3. In the conventional activated sludge system, bacteria are used to break down organic matter.
   在传统活性污泥系统中，使用细菌来分解有机物质。