Wastewater Treatment

Advantages of Sewage System

• The domestic sewage treatment plant needs to be running

  steadily to be effective.

• The sewerage system provides a healthier and more appropriate way to manage liquid wastes.

• The sewerage system provides a healthier and more appropriate way to manage solid wastes.

Sewage is mainly

• Liquid Waste

• Solid Waste

• Gaseous waste

• Mixture of solid and gaseous waste

Which chemical is used to disinfect the water

• Washing Soda

• Silica

• Chlorine

• None of the above

Which is the quality of water waste?

• Looks dirty

• Foul smell

• Mixed with lather

• All of these

Dried _____ is used as manure

• slury

• sewage

• sand

• sludge

Why should we plant eucalyptus trees near the sewage?

• Eucalyptus trees should be planted along with sewage ponds

  because these trees absorb all surplus wastewater

  quickly

• Eucalyptus trees should be planted along with sewage ponds

  because they give fresh oxygen so it can purify the water

• Eucalyptus trees should be planted along with sewage ponds

  because these trees purify the dust in water

What is the first step in the wastewater treatment process?

• Secondary treatment

• Disinfection

• Pretreatment

• Aeration

How many wastewater treatment plants are there in the US?

• About 10,000

• Over 20,000

• Approximately 5,000

• 14,748

What is the purpose of aeration basins in the wastewater treatment process?

• To degrade biological content

• To filter the water

• To disinfect the water

• To remove larger items

Which method is NOT used for disinfecting water in the wastewater treatment process?

• Carbon filtration

• Ultraviolet light

• Chlorine

• Ozone