primary sedimentation

基本解釋

It is important to select the type of primary sedimentation tank in the design of large wastewater treatment plants.
大型污水處理廠中初次沉淀池池型選擇是重要的。
The trickling filter and activated sludge efficiencies cited required primary sedimentation and effluent circulation.
列舉的生物濾池與活性污泥法的效率需要初次沉淀和回流。
Next up is the primary sedimentation tank, where sludge settles to the bottom and lighter liquids like grease, oil and soap rise to the top.
下一步就是一級沉淀池，污泥沉淀到底部，輕質(zhì)液體例如油脂、油和皂類浮到上面。