Most of the bacteria in sewage are

More Questions from Environmental Engineering

• Solid content in most of the domestic sewage is about __________ percent.
• Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.
• Which of the following industries discharge mercury as a pollutant?
• Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by
• From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.
• The function of skimming tank in sewage treatment is to remove __________ substances.
• Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes
• The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant?
• The principal gas evolved from sludge digestion tank is
• Presence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes

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