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Name two useful substances which are pro...

Name two useful substances which are produced by the treatment of sewage . state their uses.

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LAKHMIR SINGH & MANJIT KAUR-WASTE WATER STORY-EXERCISE
  1. Explain the function of bar screen in a wastewater treatment plant.

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  2. What is sludge ? Explain how it is treated .

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  3. Name two useful substances which are produced by the treatment of sewa...

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  4. What is the purpose of bubbling air into the aeration tank during the ...

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  5. Name the various wastes which should not be thrown down the drain . W...

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  6. why should oils and fats not be released in the drain ?

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  7. What is a vermi-processing toilet ?

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  8. Name the useful by -product obtained from vermi-processing toilets.

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  9. What will happen if the large amount of waste generated at public plac...

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  10. with the help of an example , outline your role as an active citizen i...

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  11. What is sewage?

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  12. State the various ways in which we produce sewage in our homes ?

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  13. What is the name of underground pipelines which carry sewage from o...

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  14. Explain why , it is harmful to discharge untreated sewage into rivers ...

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  15. What is meant by the 'treatment of sewage ' ?

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  16. What is treatment of sewages purpose?

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  17. Draw a labelled sketch of wastewater treatment plant .

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  18. Describe the various steps involved in getting clear water from wastew...

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  19. which fuel can be extracted during wastewater treatment plant process?

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  20. Explain the relation between sanitation and disease .

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