Waste Water Engineering
In case of sewer lines

Water test is carried out to check water tightness of the joints
Test for straightness is carried out with the help of a lamp and mirror
All listed here
Obstruction test is carried out with the help of smooth ball of diameter 13 mm

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Waste Water Engineering
Nitrogen cycle of sewage, is

Liberation of nitrogen-formation of nitrates-formation of nitrites-liberation of ammonia
Liberation of nitrogen-liberation of ammonia-formation of nitrites- formation of nitrates
Formation of nitrates-formation of nitrites-liberation of nitrates-liberation of nitrates
Liberation of ammonia-formation of nitrites-formation of nitrates-liberation of nitrogen

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