wastewater story

Which is the quality of water waste?

• Dirty look

• Foul smell

• Mixed with lather

• All of these

Which of the following is/are products of wastewater treatment?

• Biogas

• Sludge

• Both biogas and sludge

• Aerator

Sewage treatment

• is a process of waste water treatment.

• refers to waste water that is released by homes, industries, hospitals etc.

• refers to the rain water that run down the streets during heavy rains.

• All of the above

Which process during waste water treatment helps in eliminating germs?

• Aeration

• Sedimentation

• Chlorination

• None of the above

Dried _____ is used as manure

• slury

• sewage

• sand

• sludge

In vermi-processing toilet the human excreta is treated by

• Redworm

• Tapeworm

• Earthworm

• Roundworm

Large objects and garbage in the wastewater are removed by passing them through the _________

Water which is cleared from the floatable substances like oil and grease by a skimmer is called

What are two things that water treatment plants need to do?

• Clean and disinfect the water
• Boil and evaporate the water
• Remove the animals and plants
• Add chemicals and remove pesticides

Sewage is mainly a

• (a) liquid waste.

• (b) solid waste.

• (c) gaseous waste.

• (d) mixture of solid and gas.