A.
sludge contains protozoa in activated sludge, while biofilm doesn’t活性污泥法的污泥中有原生动物,生物膜法的没有
B.
whether microbes grow attached to solid suce or not,微生物是否附着在固体表面生长
C.
activated sludge requires aeration, while biofilm doesn’t活性污泥法需要曝气,生物膜法不需要
D.
SRT in activated sludge is shorter than the biofilm活性污泥法的污泥龄比生物膜法的短