Question
Explain the function of ‘‘anaerobic sludge digester’’ in a sewage treatment plant.
✓
Answer
In anaerobic sludge digester, methanogens, i.e. anaerobic bacteria, digest the bacteria and fungi of the floe in the activated sludge.
This produces mixture of methane, hydrogen sulphide and carbon dioxide, i.e. biogas. This gas is used as a source of energy as it is inflammable.
This produces mixture of methane, hydrogen sulphide and carbon dioxide, i.e. biogas. This gas is used as a source of energy as it is inflammable.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Besides acting as ‘conduits’ for energy transfer across trophic levels, predators play other important roles. Justify.
Identify the parts labelled in the given diagram.
What are interferons? How do they help in developing resistance to infection?
What are structural genes? Name the three structural genes present in the lac operon of Escherichia coli?
Describe the three manners in which fertilization of human ovum by a sperm can be prevented.
What do you understand by algal bloom?
Name any four mammals that lived in South America before continental drift.
Name the country where industrial melanism was observed in moths due to industrialization.
Mendel crossed plants that bred true for yellow seeds with plants that bred true for green seeds. All seeds in the $F_1$ generation were yellow. Work out the inheritance involved in this cross by using symbols for the trait. Which trait was dominant?
→How do new species arise according to de Vries mutation theory of organic evolution?