In slow sand filters, the turbidity of raw water can be removed only up to

Related MCQs

• The bed slope in slow sand filters, is generally kept
• Turbidity of raw water is a measure of
• After cleaning a slow sand filter, the filtered water is not used for
• Standard unit of turbidity of water is in one litre of distilled water, one milligram of finely divided
• A slow sand filter is cleaned if its filter head is higher than
• Turbidity of water is expressed
• Low turbidity of water is detected by
• Rapid gravity filters can remove bacterial impurities up to a maximum of
• Hardness of water can be removed by boiling if it is due to
• Permanent hardness of water can be removed by