In the waste treatment plant (WWTP) air is pumped into water to:

Support the growth of anaerobic bacteria

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Support the growth of aerobic bacteria

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Disinfect water

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Blow human waste

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Solution

The correct option is B
Support the growth of aerobic bacteria

Wastewater aeration is the process of adding air into wastewater to allow aerobic bio-degradation of the pollutant components. It is an integral part of most biological wastewater treatment systems. It helps the aerobic bacteria grow. The microbes feed on the organic material, forming flocs which can easily settle out.

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Similar questions

Q. In one method of sewage treatment, the sewage flows into a _______ tank in which anaerobic bacteria decompose the waste.

Q. Which gas is used in a waste water treatment plant to disinfect the water?

Some students of class 7 were taken for an educational trip to Waste water treatment plant .The teacher explained the process of water treatment. Identify the correct order of the process.

Step I:The liquid material is passed through sedimentation tank where solid waste like faecal matter, sand, grit settles down.

Step II:This solid matter is then removed with the help of a scrapper. This is the sludge.

Step III: Waste water is passed through bar screens to remove big objects like cans, sticks, rags etc.

Step IV: A skimmer removes the floatable solids like oil, grease etc.

Step V: Air is pumped into clarified water to help aerobic bacteria to grow. The bacteria then consume the unwanted matter still present in clarified water.

Step VI: The clear water so obtained is called clarified water.

Step VII:The suspended microbes settle at the bottom & the water is removed from the top.

The tank in which the aerobic bacteria grows and decompose the organic waste is called:

What is the function of skimmer in waste water treatment plant?

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