There are three system areas to be considered in the construction and design of the WFI system: the WFI purification unit, the distribution system, and the storage system for the water.

在建造和设计WFI系统的时候需要考虑三个系统区域：WFI纯化单元，蒸馏系统和水贮存系统。

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This paper deals with the treatment of arsenic_containing waste water in the purification section of sulfuric acid unit, and its process and mechanism are also introduced.

对硫酸生产中净化工序废水进行处理，根据其含砷量多少，介绍其处理方法、工艺流程及机理，经处理后的污水均可达到国家排放标准。

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Therefore it needs to establish the appropriate natural gas purification treatment unit for removing water from natural gas and condensate while the natural gas usually contains water and NGL.

井口采出的天然气通常含有水分和天然气凝液，因此需要建立相应的天然气净化处理装置脱除天然气中的水和凝液。

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