sludge deposition

例句：

1. 1.The wastewater treatment plant has been working overtime to prevent sludge deposition.
   污水处理厂一直在加班工作，以防止污泥沉积。
2. 2.The engineers were worried about the risk of sludge deposition in the underground pipeline.
   工程师们担心地下管道中存在污泥沉积的风险。
3. 3. To reduce the environmental impact, the company is implementing a plan to prevent sludge deposition in its wastewater treatment system.
   为了减少对环境的影响，该公司正在实施一个计划，以防止其废水处理系统中的污泥沉积。