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举一反三
【多选题】The main difference between the activated sludge and biofilm is _____.活性污泥法与生物膜法之间的主要差别是_____。
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 surface 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