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Why velocity needs to be controlled in grit chamber?

written 6.3 years ago by teamques10 ★ 68k

•   modified 4.5 years ago

environmental engineering

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written 6.3 years ago by teamques10 ★ 68k

• To control the velocity the grit chamber is divided into the compartments, it is called as porportional weir, which maintains the velocity.
• The general velocity of flow in the grit chamber is about 3 times greater than the average flow.
• Space for accumulation is required to provide a sufficient space, at the bottom of the chamber, for collection of grit.
• The velocity of the grit chamber is kept between 200mm and 300mm/per second.
• The flow should have enough velocity to carry out the grit from the chamber.
• It should never fall below 200mm/per second.

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