Waste water treatment generates a large amount of sludge, which can be treated by

Anaerobic digesters

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Solution

The correct option is B Anaerobic digesters
Anaerobic digestion is a collection of processes by which microorganisms break down biodegradable material in the absence of oxygen.
The process is used for industrial or domestic purposes to manage waste and to produce fuels.
Hence, Wastewater treatment generates a large amount of sludge, which can be treated by anaerobic digesters.
So, the correct answer is 'anaerobic digesters'.

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Which is used to remove the organic waste from the sludge?

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