The first stage of neutral process of sludge digestion, is__________________?
(A) Acid fermentation
(B) Acid regressio
(C) Alkaline fermentation
(D) None of these
Share this... |
![]() Facebook
|
![]() Twitter
|
![]() Linkedin
|
![]() Whatsapp
|
Your email address will not be published. Required fields are marked *