Which of the following is not a component of groundwater?

The unit in which both sedimentation and digestion processes of sludge takes place simultaneously is

Which instrument is used to measure the temperature of water bodies with a depth greater than 15 meters?

EPA announced updates to New Source Performance Standards (NSPS) to reduce emissions of _____ landfill gas.

What is the population of a city if the Biochemical Oxygen Demand (BOD) of the city is 5000 kg/day and the BOD per capita per day is 0.02 kg?

compute the degree of disinfection achieved within 8 minutes of addition of 10 mg/l of chlorine in 50 MLD of water. Given disinfection constant is .435 minute-1.

Which of the following sewage treatment methods has inherent problems of odour, ponding and fly nuisance?

In areas where rains are heavy and evenly distributed throughout the year, the type of sewerage system to be adopted is combined?

The primary design objectives of a secondary clarifier in an activated sludge process are effluent clarification and solids thickening, both of which are directly related to the

A water supply board is responsible for treating 1500 m³/day of water. A settling column analysis indicates that an overflow rate of 20 m/day will produce satisfactory removal for a depth of 3.1 m. It is decided to have two circular settling tanks in parallel. The required diameter (up to one decimal place, expressed in m) of the settling tanks is______.