Podcast
Questions and Answers
What is the purpose of alternating double filtration (ADF) in trickling filters?
What is the purpose of alternating double filtration (ADF) in trickling filters?
- To increase the capacity for organic loading (correct)
- To reduce the settling time of effluent
- To promote uniform distribution of effluent
- To decrease the capacity for organic loading
Why is heavy film growth promoted in the first filter of the alternating double filtration (ADF)?
Why is heavy film growth promoted in the first filter of the alternating double filtration (ADF)?
- To encourage excess film removal when the filter sequence is reversed (correct)
- To increase the settling time of effluent
- To reduce the hydraulic loading rate
- To decrease the organic loading rate
What are towers, as discussed in the text, primarily designed for in wastewater treatment?
What are towers, as discussed in the text, primarily designed for in wastewater treatment?
- To provide a natural habitat for microorganisms
- To treat large volumes of strong industrial effluents (correct)
- To promote the growth of higher organisms
- To decrease oxygen transfer efficiency
What factor makes towers a space-saving solution in wastewater treatment?
What factor makes towers a space-saving solution in wastewater treatment?
What is the effect of starving a trickling filter beyond 48 hours, as discussed in the text?
What is the effect of starving a trickling filter beyond 48 hours, as discussed in the text?
What distinguishes biologically aerated filters (BAFs) from towers in wastewater treatment?
What distinguishes biologically aerated filters (BAFs) from towers in wastewater treatment?
What can cause ponding in a trickling filter bed?
What can cause ponding in a trickling filter bed?
How can film growth in a trickling filter bed be limited?
How can film growth in a trickling filter bed be limited?
What percentage of suspended solids can a trickling filter bed remove at conventional organic loading rates?
What percentage of suspended solids can a trickling filter bed remove at conventional organic loading rates?
What can be done to prevent blockage in a trickling filter bed when increasing the organic loading rate?
What can be done to prevent blockage in a trickling filter bed when increasing the organic loading rate?
What is the recommended range for organic loading rates in filters supplied with domestic sewage to achieve the Royal Commission (20:30) Standard?
What is the recommended range for organic loading rates in filters supplied with domestic sewage to achieve the Royal Commission (20:30) Standard?
What effect does recirculating part of the treated effluent have on the organic loading rates in a trickling filter bed?
What effect does recirculating part of the treated effluent have on the organic loading rates in a trickling filter bed?
