Wastewater Story

When is world water day celebrated?

• 29 June,2006

• 22 April,2005

• 22 March ,2005

• 20 January,2004

Sewage is a _____ waste

Cleaning of water is a process of removing contaminants from the wastewater, which is commonly known as -----------

The dirty water or the uncleaned water that comes from the houses, factories, offices etc.. is commonly known as ..

Identify the image

Examples of inorganic impurities

• Nitrates, Phosphates, metals

• Phosphorus and Nitrogen

• Protozones

• Vibrio cholera

Examples of nutrients

• fruit and vegetable waste

• Nitrates, Phosphates, metals

• Protozones

• Phosphorus and Nitrogen

Protozones causes _______

• Typhoid

• Cholera

• Dysentery

• All of the above

Large objects like rugs, napkins, plastic bags are removed by using ?

• bar screens

• sludge

• aeration

• all of the above

The skimmer removes oil and grease

• True

• False