A.污水水質(zhì)的復(fù)雜程度根據(jù)污染物類型數(shù)以及某類型污染物中的水質(zhì)參數(shù)數(shù)目分為復(fù)雜、中等、簡單三類
B.復(fù)雜指污染物類型數(shù)≥3,或等于2但需預(yù)測其濃度的水質(zhì)參數(shù)數(shù)目≥11
C.中等指污染物類型數(shù)=2且需預(yù)測濃度的水質(zhì)參數(shù)數(shù)目<10,或污染物類型數(shù)=1且需預(yù)測濃度的水質(zhì)參數(shù)數(shù)目≥7
D.簡單指污染物類型數(shù)=1,需預(yù)測濃度的水質(zhì)參數(shù)數(shù)目<7