Microbes in Sewage Treatment
Microbes in Sewage Treatment: Overview
This topic covers concepts, such as, Microbes in Sewage Treatment, Harmful Effects of Sewage, Activated Sludge & Tertiary Treatment etc.
Important Questions on Microbes in Sewage Treatment
Flocs produced in the secondary treatment plant of the sewage comprises of:
What is true about the third step or tertiary treatment of industrial and municipal wastewater?
In an aeration tank, the _____ bacteria oxidise and digest the organic waste to form sludge with the release of _____ gas.
The bacterium that is commonly found in the anaerobic sludge during sewage treatment is called
The Government of India has taken several initiatives for the restoration of the river. Which of the action plan is accomplished with Japan?
Wastewater treatment generates a large quantity of sludge, which can be treated by
The sewage treatment process adapted by the people of Arcata, California includes
When activated sludge is passed into anaerobic sludge digester, the anaerobic bacteria act on the sludge and produce
Treated sewage water has:
Microbial digestion of organic wastes of sewage is called
Masses of bacteria associated with fungal filaments which form mesh-like structures is called
What is true about primary treatment?
Large quantity of waste water generated every day in cities and towns is called
In the sewage treatment process, a mixture of gases CH4, CO2 and H2S are produced during the digestion of/by
In which type of aerobic treatment systems is vigorous aeration of sewage done?
Match the information in Column I with the treatment process in Column II and identify the correct answer.
| Column I | Column II | ||
|---|---|---|---|
| (a) | It is a physical process to separate large debris. | (i) | Anaerobic digestion activated sludge and production of biogas |
| (b) | It makes use of bacteria. | (ii) | Activated sludge |
| (c) | This is formed during primary treatment. | (iii) | Aeration tanks |
| (d) | It is carried to aeration tanks from primary settling. | (iv) | Primary effluent |
| (e) | This is formed during secondary treatment. | (v) | Primary sludge |
| (f) | Flocs grow here | (vi) | Secondary treatment |
| (g) | Use of sludge digester | (vii) | Primary treatment |
Identify A, B, C and D with respect to sewage treatment.
1) Secondary treatment of effluents in large aeration tanks undergoes ______A____ process to form flocs.
2) The biological oxygen demand of these flocs is _____B______.
3) The flocs undergo sedimentation to form _______C______ and later _______D______ to form biogas.
Which of the following techniques can be used to separate the floating debris and grit from sewage waste?
The flocs formed during secondary sewage treatment consists of ____________.
Select the number of functions correct for glucocorticoids.
(A) Increase the breakdown of proteins.
(B) A decrease in inflammation.
(C) Decrease WBC count, increasing RBC count.
(D) Exhibit anti-diabetogenic activity.
