Waste Water Sewage Treatment

What decomposes the sludge ______________.

• Anaerobic Bacteria

• Aerobic Bateria

• Both of the above

• None of these

Tags

NGSS.MS-LS2-3

We should not throw cooking oil and paint down the drain because

• they break the pipe

• they harden and clog the pipe

• they flow through the drain freely

• None of these

Which of the following is a good practice be followed?

• Cooking oil and paint should not be thrown down a drain.

• Used tea leaves, solid food and cotton should not be thrown in the drain.

• Chemicals like insecticides should not throw in the drain.

• All of the above

Tags

NGSS.MS-ESS3-3

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

• Biogas

• Sludge

• Aerator

• Both biogas and sludge

The impurities present in sewage may consist of

• Organic substances

• Inorganic substances

• Nutrients

• All of the above

Which of the following is wastewater ?

• Water trickling from a damaged tap

• Water coming out of a shower

• Water flowing in a river

• Water coming out of laundry

Sewage is mainly a

• liquid waste

• solid waste

• gaseous waste

• mixture of solids and gas

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

• Sewers

• Sewerage

• Transport system

• Treatment plan

Which of the following is a part of inorganic impurities of the sewage ?

• Pesticides

• Urea

• Phospates

• Vegetable waste

Which of the following is not a source of wastewater ?

• Sewers

• Home

• Industries

• Hospitals