Waste Water Sewage Treatment

Where is the sludge and solids separated from the liquid?

• Inlet works

• Clarifyers

• Sewage treatment plant

• Bio reactor

What happens to the sewage in the first step of treatment?

• The organic matter is eaten by bacteria.

• The sewage water is aerated.

• It is screened to remove solid wastes

• It is filtered and disinfected.

In which step solid waste is removed using screens in waste water treatment.

• Primary treatment

• Secondary treatment

• Tertiary treatment

An open-drain system is a breeding place for which of the following.

• Flies

• Mosquitoes

• Organisms which cause diseases

• All of these

Tags

NGSS.MS-LS2-4

The system of a network of pipes used for taking away wastewater from homes or public buildings to the treatment plant is known as

• pipeline transport

• sewage system

• transport system.

• treatment plant.

Tags

NGSS.MS-ETS1-2

We should not throw paints and greasy substances down the drain because

• they break the pipe

• they harden and clog the pipe

• they flow through the drain freely

• None of these

What is obtained after aeration step?

• Primary sludge

• secondary sludge

• solid waste materials

Waste water from toilets is often referred to as-

• grey water

• black water

• sludge

• effluent

where is the "The treated water" released to :

• It's released into the ocean

• It's released to the local waterways

• It's dumped in sewage water

Where is the sludge water sent to

• To the ocean

• primary treatment

• secondary treatment

• To the local waterways