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Flocs, which are used in the secondary treatment of sewage, are:

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Important Questions on Microbes in Human Welfare

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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment

The below diagram represents a typical biogas plant. Select the correct option for A, B and C respectively?

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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
The high value of BOD (Biochemical Oxygen Demand) indicates that:
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
The technology of biogas production was developed in India due to the efforts of:
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Which bacteria is commonly found in the anaerobic sludge during sewage treatment?
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Study the following statements and select the incorrect ones?
(i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment
(ii) Secondary sewage treatment is mainly a mechanical process
(iii) Activated sludge sediment in s sewage treatment plant is a rich source of aerobic bacteria
(iv) Biogas, commonly called as gobar gas, is pure methane
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Explain in brief the biogas production process with the help of a labelled figure.
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Biogas is the __________ source of energy.
MEDIUM
Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
What is sewage? Write a note on the secondary or biological treatment of sewage. 
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Sewage water can be purified by:
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Which of the following in sewage treatment removes suspended solids?
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Define bioreactor. 
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
In sewage treatment, secondary treatment is considered highly significant, because
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Explain the biogas plant with a neat labelled diagram.
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
What is biogas? Name any two main constituents of biogas.
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Describe the role of Microbes in sewage treatment plant.
MEDIUM
Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Draw a labelled diagram of typical biogas plant.
MEDIUM
Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Differentiate between the primary and secondary treatment of sewage. 
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
What gases are produced in anaerobic sludge digesters?
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
The microorganisms involved in floc formation during sewage treatment are
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Biology>Plants, Microbes and Human Welfare>Microbes in Human Welfare>Microbes in Sewage Treatment
Which of the following is put into Anaerobic sludge digester for further sewage treatment?