When the hardness and alkalinity are around 30% what should be used?

Which of the following bacteria is used in nitrification process?

The treatment system consists of a WAC, SAC which is followed by a WBA and SBA. Calculate the amount of WBA resin requir…

________ is the process where all the living micro-organisms, including bacterial spores are killed.

Which of these is the most efficient method to remove arsenic?

The amount of pressure to be applied depends on __

For which type of pollutant contained in water the macro porous type of weak basic acid is used?

The direction of water in filter beds is reversed for __