Lesson 4 - Effluent Treatment
Completion requirements
Done: View
To do: Go through the activity to the end
In this lesson we take a closer look at effluent from a utilities perspective. We will consider different forms of effluent treatment.
Point of Reflection – Reconvene
Welcome back. So, what were your thoughts?
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|
Anaerobic |
Aerobic |
|
Types of microorganisms |
Anaerobic |
Aerobic |
|
Produces |
Biogas and CO2 |
Water and CO2 |
|
Sludge production |
Low (5%) |
High (50%) |
|
Energy required |
Low |
High for aeration |
|
COD removal |
70-85% |
90-98% |
|
Space required |
Low |
High (med for airlift) |
Aerobic treatment on its own would be good if you had ample space and had to meet stringent requirements. Otherwise, anaerobic would provide biogas and also reduce sludge handling requirements.