Environmental Engineering

  1. Differentiate between fauna and flora
  2. Differentiate between abiotic and biotic environments
  3. Humidification means ________.
  4. A clutch is the _________.
  5. Enlist the factors affecting the fog
  6. What is meant by 'Green house effect'?
  7. Define (a) Aerosol (b) Smog
  8. The main sources of air pollution are _________ and _________.
  9. Elutriation of sludge means _________.
  10. Sources of sludge are _________, _________, _________ and _________.
  11. _________ and _________ are two of the methods of sludge disposal.
  12. Differentiate between ploughing and trenching.
  13. General characteristics of solid waste are _________.
  14. Salvaging of solid waste means _________.
  15. Differentiate between pyrolysis and incineration.
  16. What is meant by fermentation of solid waste.
  17. Acoustic reflex means _________.
  18. _________ and _________ are two distinct types of noises.
  19. Differentiate between air borne noise and structure borne noise.
  20. Distinguish between bel and decibel

 

  1. (a) (i) Illustrate non-renewable resources with neat sketches.

(ii) Give a chart showing the environmental health hazard.

Or

(b) Enumerate the important powers conferred on the Central Government of India by the Environment (Protection) Act,1986.

  1. (a) Give a list of treatment procedures to treat effluents from (I) a textile industry (ii) a Distillery and (iii) a tannery.

Or

(b) Enlist and explain the factors influencing the stages of sludge digestion. State also the objects of sludge digestion.

  1. (a) Enlist the main gases which are polluting the air. Explain their sources and suggest measures to control them within the permissible standards.

Or

(b) Give the air quality criteria and standards. Mention the methods of collection and testing of air quality samples.

  1. (a) "Disposal of the solid waste can also reclaim waste land to prime land" - Discuss.

Or

(b) Explain in detail the method of composting including the precautions.

  1. (a) Describe the administrative and engineering controls of noise pollution.

Or

(b) Enlist the methods of noise pollution control and also enumerate the adaptive materials.

 

1. "The environmental control of vectors and pathogens is the only permanent measure to eradicate communicable diseases'. List what are these measures from Environmental Engineering.

2. Tannery effluent untreated is used for farming. -Explain how does it affect the ecological balance.

3. What is C.O.D?

4. Why D.D.T is not popular in the western countries?

5. List the effluent standards for discharge into a body of water.

  1. What is the efficiency of primary clarifier?
  2. Why Grit is to be removed'.?

8. Mention whether the' strength of an Industrial waste as measured by C.O.D or B.O.D or both?

9. Sewage is discharged into a water course. How would you follow it up by water pollution legislative?

10. What is Air classification?

  1. How Air pollution affects the climate?
  2. Compare SPM and Aerosole

13. Where, in what industry, Electrostatic precipitators are installed?

14. What is the composition of solid waste?

  1. Why sanitary land filling is superior?
  2. List the recoveries from solid waste.
  3. What is Electro magnetic separator?

18. What is the limitation for comporting?

19. An industry has spilled a radio active waste on the road. How would you dispose it of?

20. List the Engineering measures to prevent - noise pollution.

 

PART B - (5 x 12 = 60 marks)

Answer ONE question from each Unit.

UNIT 1

21. Discuss the role of environmental engineering in the

environmental control of vectors causing malaria, cholera, filaria and plague. (4 x 3 12)

Or

22. How nitrate is a pollutant? How would you determine Nitrate concentration in a given sewage and industrial waste? (12)

UNIT 11

23. Explain in a Trickling filter handling domestic waste, how bacterial reduction, BODs reduction, Air supply and Nitrification takes place. Draw a layout. (12)

Or

24. (a) What is the objective of sludge treatment by digestion? (4)

(b) Explain a sludge digestion process using heating and mixing, and list the factors affecting the speed

of digestion. (8)

UNIT III

25. (a) Compare the constituents of clean air with that of the Air classified as hazardous. (6)

(b) What is meant by Primary Air Quality standard and secondary Air quality standards .List the limits (6)

Or

26. In an industrial area, how would you monitor Air quality (12)

UNIT IV

27. (a) Describe the nature of garbage, rubbish and ashes. (6)

(b) Draw a process flow chart for separation of heavy metals and processing the solid waste for

(i) Mechanical composting (ii) Methane gas generation for power by a digestion process (iii) Fuel pellet making. (6)

Or

28. (a) Explain Aerobic and Anaerobic composting. (6)

(b) Describe the Microbiology of composting process. (6)

UNIT V

29. (a) Who are the users of radioactive materials? (5)

(b) List the conditions for safe disposal of Radio active wastes by deep burial. (7)

Or

30. (a) List the sources of noise pollution and it's effect on human health. (5)

(b) How noise pollution is measured? State the limit and the control measures and adaptive materials (7)

 1. Name the types of pollutants.

2. Distinguish between paint source of pollution and non-point source of pollution.

3. Enlist the types of analysis carried out on pollutants.

4. Define environmental damage.

5. The characteristics of waste water include

and

6. Distinguish between industrial and municipal wastes.

7. Preliminary treatment of waste water removes

and

  1. Enlist the methods of sludge disposal.
  2. Enlist the sources of air pollution.
  3. State the classification of air pollution
  4. What is an aerosol?

12. Name two units of measure to report air pollution data.

13. Why should waste is to be treated?

14. Name the methods of solid waste disposal.

15. What is negative lapse rate?

16. Briefly explain recycling of wastes

17. Enlist the toxic wastes.

18. State some effective disposal methods of radioactive wastes.

19. Enumerate the sources of noise pollution.

  1. Suggest methods of noise control.

 

PART B - (5 x 12 = 60 marks)

Answer ONE question from each Unit.

 

UNIT 1

21. "Industrialisation is an index of prosperity of a nation - Industrialisation is the cause of environmental degradation" - Discuss and reconciliate between -the two contrasting statements.

Or

22. "Mere legislation of laws will not contain environmental pollution" - Discuss

UNIT 11

23. With a neat sketch draw a typical waste treatment plant and explain the functions of each of the components.

Or

24. Explain in detail the secondary treatments of a municipal and industrial waste water, bringing out their differences and requirements in the treatment process.

UNIT 111

25. Explain in detail the types of air control measures and enlist the equipments used to contain gaseous emissions.

Or

26. Give the detailed air quality criteria and standards and explain methods to evaluate and monitor the same.

UNIT IV

27. "Nothing is a waste" - Discuss with reference to solid waste management.

Or

28. Explain in detail the thermal disposal of solid wastes and composting of solid wastes. Compare the merits and demerits of both.

UNIT V

29. Differentiate between:

  1. Musical sound and noise.
  2. Loudness and annoyance.

(c) Indoor noise and Outdoor noise.

  1. Air borne noise and noise pollution.
  2. Bel and decibel.

(f) Air pollution and Noise pollution.

Or

30. "An atomic energy plant has the problem of continuous disposal of radioactive wastes. The plant is on the outskirts of a fast developing metropolis. Ground water is the only source of water supply to the metropolis which is spread near the atomic energy plant" - Explain the possibilities of the ground water sources getting radioactively polluted and its after effect on consumers. Suggest methods to prevent such a situation and provide different methods to safe of safe and effective methods of disposal of the radioactive wastes.

 

1.      Define Environmental Engineering

  1. Define B.O.D5
  2. How heat causes pollution?
  3. What is EPA?
  4. Which of the following causes more concern today in water pollution? and why ?

(a)Biological pollution

(b)Chemical pollution

  1. What is water pollution control legislation?
  2. What are the unit processes involved in Primary treatment of wastewater?
  3. What is the function of screen chamber?
  4. What is the limit for B.O.D5 and suspended solids in the effluent?
  5. Give the Pollutant standard index to warn the people to keep indoor.
  6. What is Inversion condition?
  7. What are the factors essential for the production of photochemical smog?
  8. Compare sanitary landfill to open dumping in respect of solid waste
  9. Distinguish between Aerobic and Anaerobic composting
  10. How are you sure that the microbial action is still going on in a sanitary land filling?
  11. Name two diseases (vector borne) which are controlled by proper sanitary disposal of solid wastes.
  12. List the Radiation effects on adults.
  13. ‘It is not possible to dispose off radioactive wastes safely’ Explain why?
  14. What is Noise pollution?
  15. How noise pollution can be abated by Building construction?

Part – B (5 X 12 = 60 Marks)

  1. Give the significance of B.O.D5 and C.O.D tests. Why C.O.D test is prefered?

(or)

  1. How Environmental Engineering is helpful to control

(a) Malaria (b)Filaria (c)Plague (d)Cholera

  1. Compare a secondary treatment for Tannery and Brewery wastes with flow diagram.

(or)

  1. (a) What is the B.O.D5 content in Domestic wastewater and Brewery wastewater? (6)

(b) Draw a layout of Activated sludge process for Domestic sewage and Brewery waste treatment, to reduce the B.O.D5 content to 20 mg/l. (6)

  1. What is Air pollution? How does it affect man and vegetation? Give the Primary and Secondary ambient air quality standards.

(or)

  1. Discuss the prevention and control measures for Air pollution.
  2. (a)What is solid waste? List the various elements in the solid waste, and their nature? (6)

(b)What are the factors needed for speedy Aerobic composting? Describe a mechanical composting.

(or)

  1. (a)Discuss the Sanitary precautions taken care of in a sanitary land filling? (6)

(b)How methane gas is produced by microbes from sanitary land filling? (6)

  1. (a)Discuss the effects of radiation on man. (6)

(b)List the sources of radiation and the limits in effluents passed as to rivers. (6)

(or)

  1. (a)What are the devil effects of noise pollution? (6)

(b)Describe Engineering and Administrative measures and adaptive materials to control

noise pollution (6)

 

  1. Study of environmental engineering is important because _________.
  2. Name the pollutants that damage the environment.
  3. What is a non-point source of pollution?
  4. Name the chemical analysis of pollutants.
  5. Classify the wastewater.
  6. State the units employed in the preliminary treatment.
  7. How are sludge disposed?
  8. What is the difference of treatment of industrial wastes?
  9. Classify air pollution.
  10. Enlist the air quality criteria.
  11. What are particulates?
  12. What are cyclones?
  13. State the characteristics of solid waste.
  14. ____________ and _____________ are the thermal processes of solid waste disposal.
  15. What are the factors that control the sanitary land fill?
  16. What is recycling of solid wastes?
  17. State the sources of Noise pollution.
  18. What are the noise control criteria.
  19. State the engineering controls of treatment.
  20. Enlist the adaptive materials.

Part B (5 x 12 = 60 Marks)

  1. (a) What are the laws entacted to protect environment? Enlist and explain some of the important ones.

Or

(b) "Environmental pollution degrade the air, land and water resources - Explain.

  1. (a) Comment on the following factors that influence the capacity of digestion tank:

(i) Temperature
(ii) Mixing and seeding and
(iii) Seasonal storage.

Or

(b) Design a sludge digestion tank with the following data:

(i) Average flow of sewage = 20 m3/day
(ii) Total suspended solids in raw sewage = 350 mg/l
(iii) Volatile suspended solids = 250 mg/l
(iv) Water content of raw sludge = 96%
(v) Water content of digested sludge = 90%
(vi) Volatile solids reduction = 50%
Assume any other data required.

  1. (a) "Solid waste disposal can be gainfully performed by recycling" - Discuss.

Or

(b) Explain the microbiology of solid waste composting.

  1. (a) Describe the methods used to control particulate emission.

Or

(b) What is the nature of air pollution? State the sources of air pollution and suggest methods to control air pollution.

  1. (a) Name the sources of radiation pollution and state their impact on the environment. Explain the methods to safeguard against the same.

Or

(b) "Growth of any city is felt by the growth of Noise pollution" - Discuss.

 

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Last Updated: 03/10/03

 

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