Waste Water Engineering
Kjeldahl nitrogen is a mixture of

Organic nitrogen and ammonia
Nitrogen and organic nitrogen
Ammonia and nitrogen
All listed here

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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 the diluting water is having flow currents
When diluting water is used for water supply near the point of sewage disposed
When sewage is fresh

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