rour
rour-
Moreover , the relative oxygen uptake rate ( ROUR ) and the ratio of BOD5 / COD were chosen to analyze the changes of the wastewater biodegradability after IE treatment and the relationship between the biotoxicity and the regular physical-chemical indexes .
以相对耗氧速率（ROUR）和BOD5/COD作为可生化性指标，研究了废水的可生化性变化规律及生物毒性与常规理化指标之间的联系。