Chemical Engineering :: Environmental Engineering
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A shallow pond in which the sewage is retained and biologically treated is called
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Which is the most practical and economical method for removal of suspended solid matter from polluted water ?
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Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called
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Iron & manganese present in the polluted water is removed by
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Water effluent generated in printing industry is decolourised by
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Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it.
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__________ can not control the noise pollution.
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Ozone level is generally found to be depleted in India in the month of
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Noise level during normal conversation among men is about __________ decibles.
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'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate' ?
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