Water filtration rate in a slow sand filter ranges from ____________ litres/m2/hr?
(A) 10 to 20
(B) 100 to 200
(C) 1500 to 2500
(D) 4000 to 5000
Share this... |
Facebook
|
Twitter
|
Linkedin
|
Whatsapp
|
Your email address will not be published. Required fields are marked *