Understand the role of microbes in sewage treatment, including primary, secondary, and activated sludge processes. Learn how they help break down waste and purify water.
Saccharomyces cerevisiae ferments palm sap to produce toddy, a traditional drink in some parts of India.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Methanogens are involved in anaerobic sludge digestion, not in secondary treatment.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Methanogenic bacteria help in the anaerobic digestion of sludge, producing methane gas as a byproduct.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Methanogens are not involved in primary treatment; they are used in anaerobic digestion of sludge.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Pseudomonas species can degrade petroleum and are used in the bioremediation of oil spills.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Methanogens are involved in anaerobic sludge digestion, not secondary treatment.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Tertiary treatment involves chemical and physical processes in addition to microbial degradation.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Methanogens are involved in anaerobic digestion of sludge, not in secondary treatment.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Tertiary treatment involves chemical and physical processes along with microbial action.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Aerobic heterotrophic bacteria degrade organic matter in sewage, reducing its Biochemical Oxygen Demand (BOD).
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Microbes play a key role in breaking down organic matter, which helps in waste management and recycling nutrients.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Sludge digestion is carried out by anaerobic bacteria, not aerobic bacteria.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
