Greywater Characteristics, Treatment Systems, Reuse ...
2018-7-16u2002·u2002Introduction. The total volume of freshwater on Earth far outweighs the human demands. Out of the overall water resources on Earth, about 97% can be found in the oceans while the remaining 3% remains available for direct exploitation; however, out of this 3%, the quantity of water that is available for use by humans is estimated at one-hundredth (Eakin and Sharman 2010; Gleick 1993).
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