examples of inorganic impurities present in sewage
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The two organic impurities present in sewage water are human faeces and animal wastes like animal dung. The two inorganic impurities present in sewage water are nitrates and phosphorus. 3. Sludge is added back to the aeration tank to increase the population of aerobic bacteria
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Human faeces, animal wastes, oil, urea, pesticides, herbicides, fruits and vegetables are the organic impurities in water.
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