The most important type of species involved in the degradation of organic matter in the case of activated sludge process is
(A) autotrophs
(B) heterotrophs
(C) prototrophs
(D) photo-autotrophs
The most important type of species involved in the degradation of organic matter in the case of activated sludge process is
(A) autotrophs
(B) heterotrophs
(C) prototrophs
(D) photo-autotrophs