Lesson 5 - Effluent Treatment SAQ
This lesson allows you to test yourself on the material covered in the Effluent Treatment lesson and determine the level to which you have met the learning outcomes.
Self-Assessment Questions
1. * Explain the differences between the following:
a) COD and BOD
b) Aerobic and anaerobic processes
c) Effluent balancing and pH control of effluent
2. * a) Explain the differences between primary, secondary, and tertiary effluent treatment.
b) What is the aim of primary effluent treatment and why is it important?
c) Describe the operation of a DAF unit.
3. ** What are the main advantages and disadvantages of anaerobic and aerobic effluent treatment?
4. ** In order to reuse water from effluent, what equipment would you consider? From a discharge perspective, what could present a problem with water reuse?
5. ** a) Draw a typical UASB reactor and explain how it works.
b) What are the advantages of a UASB reactor versus a lagoon system for anaerobic effluent treatment?
6. ** Why might you only use anaerobic treatment and not a combination of anaerobic and aerobic?