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Questions and Answers
What is the purpose of concentration or thickening in sludge treatment?
What is the purpose of concentration or thickening in sludge treatment?
- To enhance the pathogen content of the sludge
- To increase the organic matter content of the sludge
- To separate mineral and organic solids in the sludge
- To remove water from the sludge and reduce its volume for easier handling (correct)
What is the primary purpose of stabilization or digestion in sludge treatment?
What is the primary purpose of stabilization or digestion in sludge treatment?
- To remove pathogens from the sludge
- To decompose the organic part of the sludge by micro-organisms (correct)
- To increase the heavy metal content of the sludge
- To separate nitrogen and phosphorous from the sludge
What does sludge contain that makes it rich in nutrients?
What does sludge contain that makes it rich in nutrients?
- Pathogens and heavy metals
- Nitrogen and phosphorous (correct)
- Hydrocarbons and industrial influence
- Organic pollutants and pesticides
Which method is used to stabilize sludge by digesting it under aerobic or anaerobic conditions?
Which method is used to stabilize sludge by digesting it under aerobic or anaerobic conditions?
What pollutants are most likely to get adsorbed to the sludge in wastewater treatment?
What pollutants are most likely to get adsorbed to the sludge in wastewater treatment?
What is the primary purpose of dewatering in sludge treatment?
What is the primary purpose of dewatering in sludge treatment?
What is the main objective of stabilization or digestion in sludge treatment?
What is the main objective of stabilization or digestion in sludge treatment?
What makes sludge rich in nutrients such as nitrogen and phosphorous?
What makes sludge rich in nutrients such as nitrogen and phosphorous?
Which method is used to reduce the volume of sludge by removing water as much as possible?
Which method is used to reduce the volume of sludge by removing water as much as possible?
What happens during aerobic digestion in sludge treatment?
What happens during aerobic digestion in sludge treatment?
Sludge consists of water and mineral solids only.
Sludge consists of water and mineral solids only.
Sludge can contain heavy metals and organic pollutants if the sewage contains industrial influence.
Sludge can contain heavy metals and organic pollutants if the sewage contains industrial influence.
Dewatering is the process of stabilizing the sludge by digesting it under anaerobic conditions.
Dewatering is the process of stabilizing the sludge by digesting it under anaerobic conditions.
Aerobic digestion involves oxidizing and decomposing the organic part of the sludge in the absence of oxygen.
Aerobic digestion involves oxidizing and decomposing the organic part of the sludge in the absence of oxygen.
The primary purpose of concentration or thickening is to increase the volume of the sludge for easier handling.
The primary purpose of concentration or thickening is to increase the volume of the sludge for easier handling.
