Discussion
Home ‣ Biochemical Engineering ‣ Water Treatment Comments
- Question
Secondary treatment uses __________ to consume wastes.
Options- A. micro-organisms
- B. chemicals
- C. filtration
- D. none of these
- Correct Answer
- micro-organisms
- 1. The sterilization method depends
Options- A. nature of additive
- B. volume and feed rate
- C. both (a) and (b)
- D. none of these Discuss
- 2. The filter material used for air filtration system is/are
Options- A. glass wool
- B. glass fibre
- C. norite
- D. all of the above Discuss
- 3. The interception efficiency can be expressed as (where dp is the particle diameter and Dc cylindrical collection diameter)
Options- A. dp/Dc
- B. dp x Dc
- C. dp/Dc x 100
- D. dpDc/100 Discuss
- 4. The mechanical means of accomplishing sterilization of fermentation media/equipment is
Options- A. ultrasonic
- B. radiation
- C. chemical agents
- D. none of these Discuss
- 5. Glass fibers are favorable as a filter medium because they give a
Options- A. lower pressure drop and are less liable to wetting or combustion
- B. more pressure drop and are less liable to wetting or combustion
- C. lower pressure drop and are more liable to wetting or combustion
- D. more pressure drop and are more liable to wetting or combustion Discuss
- 6. The activated sludge process consists of returning a portion of the clarifier
Options- A. effluent water entering the reactor
- B. influent water coming out of the reactor
- C. influent water entering the reactor
- D. effluent water coming out of the reactor Discuss
- 7. Sanitizers used for rubber made equipments are
Options- A. strong acids
- B. strong alkalis
- C. combination of both
- D. none of these Discuss
- 8. BOD stands for
Options- A. biochemical oxygen demand
- B. british oxygen demand
- C. british oxygen depletion
- D. biological oxygen depletion Discuss
- 9. Which of the following substances are commonly used in a filter?
Options- A. Charcoal
- B. Sand
- C. Both (a) and (b)
- D. Aluminum chloride Discuss
- 10. Sanitizer used specifically for vitreous enamel are
Options- A. strong alkalis
- B. strong acids
- C. weak alkali with sodium silicate
- D. none of these Discuss
Water Treatment problems
Search Results
Correct Answer: both (a) and (b)
Correct Answer: all of the above
Correct Answer: dp/Dc
Correct Answer: ultrasonic
Correct Answer: lower pressure drop and are less liable to wetting or combustion
Correct Answer: influent water entering the reactor
Correct Answer: strong alkalis
Correct Answer: biochemical oxygen demand
Correct Answer: Both (a) and (b)
Correct Answer: weak alkali with sodium silicate
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