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To what temperature is a sludge constituting liquid biosolids heated in order to treat it?

To what temperature is a sludge constituting liquid biosolids heated in order to treat it? Correct Answer 180 degree Celsius

Sludge constituting liquid biosolids is heated to 180 degree Celsius. This sludge is mixed with oxygen in order to maintain aerobic conditions. The sludge is heated for at least 30 mins.

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