The facility should have a process waste water discharge permit.

受核工厂须领有加工厂废水排放许可证。

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Therefore, it is important to choose an equipment to process waste water and to make discharged waste water meet the national standard.

因此，污水排放能否达到国家标准，选用一种好的污水处理设备至关重要。

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The system USES the heat from waste gases produced in the kiln during the cement-making process both to dry the cement and to heat water in a boiler that drives a turbine to produce electricity.

这套设备利用了水泥窑在生产时排放出的废气中的热量，通过热交换的原理，既晾干了水泥熟料，又加热了锅炉里的水，从而形成水蒸气，最后推动涡轮转动发电。

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The method uses biogas, which is produced when waste water sludge is broken down by microbes in a process known as anaerobic digestion.

BBC: United Utilities turns human waste to energy at plant

Protesters say fracking could have "enormous implications" for the local environment particularly about the contamination of waste or flowback water once it has been used in the fracking process.

BBC: Lancashire's shale gas estimated at ?136bn by Cuadrilla

Vivendi is a media, telecoms and Internet company still in the process of emerging from its origins as a state-owned water-and-waste utility.

ECONOMIST: Vodafone/Vivendi/Mannesmann