what changes did you observe in the appearance of the liquid after aeration ?

Did aeration change the colour ?

What was removed by the sand filter ?

Question

what changes did you observe in the appearance of the liquid
after aeration ?
Did aeration change the colour ?
What was removed by the sand filter ?

Vedant R. Nimje · Answer

Yes , aeration changed the colour Sand filtered the harmful
insoluble and organic wastes