Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Lime Sodium permanganate Copper sulphate Sulphuric acid Lime Sodium permanganate Copper sulphate Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of filtration in slow sand filters in million litres per day per hectare is about 100 to 150 50 to 60 500 to 600 1400 to 1500 100 to 150 50 to 60 500 to 600 1400 to 1500 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The velocity of flow of water in a sedimentation tank is about 15 to 30 cm/hour 15 to 30 cm/sec 5 to 10 cm/sec 15 to 30 cm/minute 15 to 30 cm/hour 15 to 30 cm/sec 5 to 10 cm/sec 15 to 30 cm/minute ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period in coagulation tanks is usually kept as 2 to 6 days 1 to 2 minutes 30 to 45 minutes 2 to 6 hours 2 to 6 days 1 to 2 minutes 30 to 45 minutes 2 to 6 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following unit works in anaerobic conditions? Sedimentation tank Activated sludge treatment Trickling filters Sludge digestion tank Sedimentation tank Activated sludge treatment Trickling filters Sludge digestion tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The length of rectangular sedimentation tank should not be more than (Where ‘B’ is the width of the tank) 8B B 4B 2B 8B B 4B 2B ANSWER DOWNLOAD EXAMIANS APP
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