what does waste water contain?
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Wastewater contains nitrogen and phosphorus from human waste, food and certain soaps and detergents.
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Wastewater is a complex matrix containing significant concentrations of solids (total solids 350–1200mg/l), dissolved and particulate matter (chemical oxygen demand 250–1000mg/l), microorganisms (up to 109 number/ml), nutrients, heavy metals and micro-pollutants.
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