Q. What is the reason that oil pollution attracts the greatest attention?

View solution

Q. The natural process of emulsification of oil in water can be accelerated through the use of chemical dispersants.

View solution

Q. What is the first step in primary sewage treatment plants?

View solution

Q. What is called for the removal of sand, gravel in the primary treatment of sewage treatment plant?

View solution

Q. What is called for the place where lighter, organic material settles in the primary treatment of sewage plant?

View solution

Q. Where can we find rotating arm sprays in sewage treatment?

View solution

Q. In which secondary treatment of sewage treatment sludge is broken down in an anaerobic digester?

View solution

Q. In sewage treatment of oxidation pond we can see the water up to 2 meters deep.

View solution

Q. In which of the following treatment of sewage plant we can find disinfection as a step?

View solution

Q. How many percentage of BOD removes in primary treatment?

View solution

Q. What is the main objective of secondary treatment of sewage plants?

View solution

Q. How many common approaches are used in secondary treatment?

View solution

Q. What is the meaning of ‘Tainting’ related to marine pollution?

View solution

Q. When drill cutting dumped on the seabed which toxic is produced?

View solution

Q. What happens if liquid oil contaminates a bird’s plumage?

View solution

Q. What is noise?

View solution

Q. In which unit sound is measured?

View solution

Q. Which pollution cause hearing loss in organisms?

View solution

Q. What is the dB of a threshold of hearing?

View solution

Q. What is the dB of a threshold of pain?

View solution