WATER POLLUTION CONTROL TECHNOLOGY

Chia sẻ: Thanh Liem | Ngày: | Loại File: PDF | Số trang:13

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WATER POLLUTION CONTROL TECHNOLOGY

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Various degrees of pollution management have been carried out for centuries. Roman sewers are well known. For much of this time, emphasis was on reducing esthetic problems in cities. When a connection was made between disease and microorganisms harbored in human wastes, the urgency to remove these wastes from human contact increased.

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Nội dung Text: WATER POLLUTION CONTROL TECHNOLOGY

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