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Activated sludge should have the ability...

Activated sludge should have the ability to settle quickly so that it can :

A

be rapidly pumped back from sedimentation tank

B

to aeration tank absorb pathogenic bacteria present in waste water while sinking to the bottom of the settling tank

C

be discarded and anaerobically digested

D

absorb colloidal organic matter

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The correct Answer is:
A
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USHA PUBLICATION-MICROBES IN HUMAN WELFARE-EXERCISE
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  3. The free - living fungus Trichoderma can be used for :

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  4. What would happen if oxygen availability to activated sludges flocs is...

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  5. Mycorrhiza does not help the host plant in:

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  6. Which one of the following is not a nitrogen - fixing organism ?

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  7. Big holes in Swiss cheese are made by a :

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  8. The residue left after methane production from cattle dung is :

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  9. Methanogens do not produce :

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  10. Activated sludge should have the ability to settle quickly so that it ...

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  11. A good producer of citric acid is

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  12. A neem product used as insect repellant is

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  13. Fill In The blank : In biogas production bacteria are used .

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  14. Fill In The blank : BGA used in biological nitrogen fixation are calle...

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  15. Fill In The blank : Ethanol obtained by fermentation is used in indust...

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  16. Fill In The blank : Acetobacter converts to vinegar by aerobic fermen...

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  17. Distinguish between: Batch culture and suspension culture

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  18. Distinguish between: Primary and secondary treatmet of sewage

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  19. Differentiate between:Primary sludge and activated sludge

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  20. Distinguish between: Biofertilizer and biocontrol agent

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