sludge treatment

例句：

1. 1. The sludge treatment plant is located in the city's central area.
   污泥处理厂位于市中心。
2. 2.The sewage treatment process involves removing pollutants from wastewater.
   污水处理过程涉及从废水中去除污染物。
3. 3. The wastewater treatment plant uses advanced technology to purify the water before it is released into the environment.
   废水处理厂使用先进技术净化水，然后再将其排放到环境中。