Podcast
Questions and Answers
What role do the bacteria play in the biological film within the filter system?
What role do the bacteria play in the biological film within the filter system?
- Oxidize ammonia to sulphides
- Promote the accumulation of solids
- Break down complex organic materials (correct)
- Enhance the settling of humus
How do higher organisms such as protozoa contribute to the filter system?
How do higher organisms such as protozoa contribute to the filter system?
- Promote bacterial growth
- Accelerate the development of the biological film
- Prevent the filter from blocking
- Improve settling characteristics of solids (correct)
What can poison the development of the active slime layer in a filter system?
What can poison the development of the active slime layer in a filter system?
- Bacterial growth
- High organic loading rates
- Increased hydraulic load
- Toxic chemicals (correct)
What is the function of a slime layer in a low-rate filter system?
What is the function of a slime layer in a low-rate filter system?
What is the main role of the large surface area created in the filter bed?
What is the main role of the large surface area created in the filter bed?
Why is a simple filter inefficient when operated at high organic loading rates?
Why is a simple filter inefficient when operated at high organic loading rates?
What is the main action of a trickling filter in wastewater treatment?
What is the main action of a trickling filter in wastewater treatment?
What is the recommended voidage (% air space of total bed volume) for packing material in trickling filters?
What is the recommended voidage (% air space of total bed volume) for packing material in trickling filters?
Which type of packing material would be preferable in trickling filters due to its higher surface area and voidage?
Which type of packing material would be preferable in trickling filters due to its higher surface area and voidage?
What is the function of the secondary sedimentation tank or humus tank following a trickling filter?
What is the function of the secondary sedimentation tank or humus tank following a trickling filter?
How does a trickling filter differ from a typical filtration process?
How does a trickling filter differ from a typical filtration process?
Why are some trickling filters designed in a rotary system?
Why are some trickling filters designed in a rotary system?
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