sludge filtration

例句：

1. 1. The sludge filtration system is designed to remove pollutants from the wastewater.
   污泥过滤系统旨在从废水中去除污染物。
2. 2.The sewage treatment plant is responsible for removing harmful substances from the city's water supply.
   污水处理厂负责从城市的供水系统中去除有害物质。
3. 3. In order to improve the quality of water, we need to ensure that the wastewater is properly treated before discharge.
   为了提高水质，我们需要确保在排放之前对废水进行适当的处理。