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प्रश्न
What do you mean by the following:
Sewage
उत्तर
Sewage: It is a liquid waste which is discharged from kitchens, bathrooms, lavatories, laundries and laboratories. It includes mineral and organic matter wastewater and human excreta. As municipal sewage contains large quantities of nitrogen and organic matter, it can affect the ecosystem if it is not treated.
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संबंधित प्रश्न
Why musation of waste be done before disposal?
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