Waste Water Engineering
In detritus tanks,

Detention period is kept 3 to 4 minutes
Organic and inorganic materials are separated
All listed here
Flow velocity is kept 0.09 m/sec

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

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

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