primary clarifier

例句：

1. 1. The primary clarifier is used to remove impurities from the raw material before it is processed.
   初级澄清器用于在加工前从原料中去除杂质。
2. 2.In the chemical industry, primary clarifiers are used to separate different types of impurities in the raw materials.
   在化工行业，初级澄清器用于分离原料中的不同类型杂质。
3. 3.The primary clarifier is an important part of the wastewater treatment process, as it helps to remove harmful substances from the water.
   初级澄清器是废水处理过程的重要部分，因为它帮助从水中去除有害物质。