Which process removes sand grains from water?
Which of the following process is used to remove dirt and sand from wastewater?
Give as many methods as you can for the following :
(a) Separating light materials from grain.
(2) Removing weevils from grain.
(c) Picking out stones from grain.
(d) Cleaning grain which has a lot of soil mixed in it.
(e) Cleaning muddy water.