During a sanitary inspection of a rapid sand filtration plant, slowing of the filtration rate was observed owing to loss of head. Which method will you suggest to give head to water in such a situation?

Question

Quizplus · Accepted Answer

Back washing of the sand bed is the correct method to restore the filtration rate in a rapid sand filtration plant when slowing is observed due to loss of head. This process involves reversing the flow of water through the filter to remove the accumulated particles in the sand bed, thereby increasing the head and restoring the filtration rate.

During a Sanitary Inspection of a Rapid Sand Filtration Plant