Question
Download Solution PDFActivated sludge process is a:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Activated sludge process:
- The essential features of the activated sludge process are an aeration stage, solids-liquid separation following aeration, and a sludge recycle system.
- Wastewater after primary treatment enters an aeration tank where the organic matter is brought into intimate contact with the sludge from the secondary clarifier.
- It requires less space, does not produce obnoxious odor, and requires less time for wastewater treatment.
- It requires skilled supervision
Important Points
Followings are the classification of secondary treatment units:
|
Method |
Contact Mechanism |
Decomposition |
|
Trickling filter |
Attached growth |
Aerobic |
|
Rotating biological contactor |
Attached growth |
Aerobic |
| Activated sludge process |
Suspended growth |
Aerobic |
|
Oxidation pond |
Suspended growth |
Aerobic |
|
Septic tank |
Suspended growth |
Anaerobic |
|
Imhoff tank |
Suspended growth |
Anaerobic |
Last updated on Jun 4, 2025
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