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Evolution of the Earth's Atmosphere

Question

How are twigs and gravel removed from sewage?

3 years ago

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1 Reply

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M

Marley Dooley


1 Answer

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Rosie W Verified Sherpa Tutor ✓

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Filtration - like a sieve at home. Different size filters have different sized gaps, which trap items such as gravel, while allowing water to pass through.

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