If the grit in grit chambers is 4.5 million litres per day, its cleaning is done____________________?

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Pick up the correct statement from the following ?

A. Small sewers are cleaned by flushing B. Medium sewers are cleaned by cane rodding C. Medium sewers may be cleaned by pills D. All the above...

The grit chambers of sewage treatment plants, are generally cleaned after__________________?

A. 2 days B. 7 days C. 12 days D. 14 days...

For trunk sewers more than 1.25 m in diameter, the ratio of the maximum daily sewage flow to the average daily sewage flow is assumed________________?

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In 1000 kg of sewage, the total solids approximate___________________?

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Dry water flow in a combined sewer, is______________________?

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