Waste Water Engineering
The clarigesters are

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

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Waste Water Engineering
Dilution method of disposing of sewage, is not preferred to

When diluting water is used for water supply near the point of sewage disposed
When diluting water has high dissolved oxygen content
When the diluting water is having flow currents
When sewage is fresh

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