sludge pumping

例句：

1. 1. The wastewater treatment plantis responsible for the sludge pumping operation.
   污水处理厂负责污泥泵送操作。
2. 2.During the sludge pumping process, the operator must ensure that the pumpis operating smoothly.
   在污泥泵送过程中，操作员必须确保泵运行顺畅。
3. 3.The sludge pumping process helpsto remove harmful bacteria from the water system.
   污泥泵送过程有助于从水系统中去除有害细菌。