Wastewater Treatment and Reuse-The Future Source of Water Supply

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Encyclopedia of Sustainable Technologies, 2017, pp. 43 - 52
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© 2017 Elsevier Inc. All rights reserved. Freshwater supply is critical for the survival of humankind. With the rapid growth of population and urbanization we are confronted with serious water scarcity. Wastewater treatment, recycle, and reuse have now become important alternate sources of water supply. Wastewater is used water from domestic, commercial, industrial, and agricultural activities. This water if untreated may be harmful to both the man-made and the natural environment. Treating wastewater requires a comprehensive planning, design, construction, and management of treatment facilities to ensure that the treated water is safe for human consumption and for discharge to the environment. The potential treatments include primary, secondary, and tertiary treatment using mechanical, chemical, and biological processes. Nowadays wastewater treatment plays an important role in providing safe water to ease water scarcity in some areas.
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