English English Biochemical oxygen demand English biological oxygen demand English English biological oxygen demand English Biochemical Oxygen Demand "Biochemical Oxygen Demand" English English English English English English English English English English W biochemical oxygen demand biochemical oxygen demand BZT5 English English Biochemical oxygen demand English English English biochemical oxygen demand biological oxygen demand (BOD) English BOD English BOD Biochemical Oxygen Demand Biochemical oxygen demand biological oxygen demand English English English English view article biochemical oxygen demand English Biochemical oxygen demand biological oxygen demand English English English English English BOD English biochemical oxygen demand English biochemical oxygen demand English biochemical oxygen demand English biochemical oxygen demand English English English English Biochemical oxygen demand 1. BOD BOD English biochemical oxygen demand (BOD) English Biochemical Oxygen Demand