Which are microorganisam are used in purifying waste water?
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Waste water must be treated and purified before discharging it into river or for its usage for other purposes. Main pollutants of water include pathogens, metals, nutrients and other solid particles. There are certain bacteria that can remove trace metals from water making it available for drinking purpose. Rotifers are microorganisms that are used to remove fine particles from water because they are filter feeding in nature.
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bakelite and melamine are the example of thermoplastic
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