Membrane technologies consist of a group of treatment processes which include reverse osmosis, nanofiltration and ultrafiltration.

膜技术由一系列的处理程序组成，其中包含反渗透，纳滤和超滤。

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Biological treatment is one of the most widely used wastewater treatment processes.

生物处理是目前废水处理的重要手段之一。

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Existing odorous gas treatment processes research.

常用恶臭气体处理技术研究。

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Mr McGuigan said there were concerns about prescription medication and poor drug treatment processes.

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This should not cause problems for public water companies, which already have monitoring and treatment processes to deal with any organisms or chemicals in their supplies.

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These new techniques give scientists and engineers the tools to explore the role of colloidal and small particulate material in natural waters and in water treatment processes.

UNESCO: Water Portal | Water Events Worldwide