Its main role is to remove impurities in the water, effluent meets the requirement.

其主要作用是去除水中的杂质，使出水满足使用要求。

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Algae also offer the potential of aiding in the curbing of CO2 emissions from power stations and cement factories, and in cleaning nitrates and phosphates from agricultural runoff water and effluent from sewage plants, while simultaneously furnishing useful fuels such as biodiesel and ethanol according to how the algae are processed.

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Water quality issues also create risk for companies, from stricter pollution standards on their own effluent to other entities polluting water upstream, requiring them to clean up water prior to use.

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We will also look at trade effluent because it is the dirty water and normally needs to be licensed and manage very carefully.

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