Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Home
»
Chemical Engineering
»
Environmental Engineering
Oil and grease present in an emulsified state in waste water discharged from industries can be removed by
biological oxidation.
skimming off.
settling out using chemical reagents.
chlorination.
Correct Answer:
settling out using chemical reagents.
← Previous Question
Next Question→
More Questions from
Environmental Engineering
Presence of soluble organics in polluted water causes
Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan
Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances.
Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water.
COD of raw municipal sewage may be in the range of about __________ mg/litre.
Noise level during normal conversation among men is about __________ decibles.
Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in
Iron & manganese present in the polluted water is removed by
The main industrial source of emission of hydrogen sulphide air pollutant is
Fresh sewage is __________ in nature.
Discussion & Comments
No comments yet. Be the first to comment!
Name:
Comment:
Post Comment
Join Discussion
Discussion & Comments