Waste Water Engineering
With self cleansing velocity in sewers

Both silting and scouring occur at bottom
Scouring occurs at bottom
Neither silting nor scouring occurs at bottom
Silting occurs at bottom

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Waste Water Engineering
The clarigesters are

Circular Imhoff double tanks with bottom hoppers
Rectangular septic tanks
Circular septic tanks
Circular Imhoff double storey tanks without bottom hoppers

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