The under drainage system in slow sand filters

Related MCQs

• Rapid sand filters are cheap and economical as compared to slow sand filters.
• The effective size of sand particles for slow sand filters varies from
• The under drainage system in a rapid sand filters
• The coefficient of uniformity for slow sand filters is
• The effective size of sand particles for rapid sand filters varies from
• Cleaning of rapid sand filters is done by
• The coefficient of uniformity for rapid sand filters is
• Rpid sand filters are suitable for small towns and villages.
• Slow sand filter is more efficient for the removal of
• The slow sand filter should be cleaned if the loss of head becomes more than