2.2 the index of marine oxygen-demanded pollution 1. BioChemical Oxygen Demand(BOD) 2. Chemical Oxygen Demand(COD) 3. Ultimate Oxygen Demand(UOD) 4. Theoretical Oxygen Demand(TOD)
2.2 the index of marine oxygen-demanded pollution 1. BioChemical Oxygen Demand(BOD) 2. Chemical Oxygen Demand(COD) 3. Ultimate Oxygen Demand(UOD) 4. Theoretical Oxygen Demand(TOD)
Biochemical oxygen demand (BOD) ◼ BOD test: the most commonest and most versatile measure of broad effect. 2.2 the index of marine oxygen-demanded pollution
Biochemical oxygen demand (BOD) ◼ BOD test: the most commonest and most versatile measure of broad effect. 2.2 the index of marine oxygen-demanded pollution
BioChemical Oxygen Demand(BOD) ◼ definition： BioChemical Oxygen Demand(BOD)，表示水中有机物质由微生 物分解所需溶解氧的量。单位为mg-O2／l。 ◼ 含义： 表示可氧化分解水体中所溶存的含碳有机物，也包括 化学氧化法难以氧化的含N和P的有机物质。它在一定 程度上可以反映水体中有机物质含量。 2.2 the index of marine oxygen-demanded pollution
BioChemical Oxygen Demand(BOD) ◼ definition： BioChemical Oxygen Demand(BOD)，表示水中有机物质由微生 物分解所需溶解氧的量。单位为mg-O2／l。 ◼ 含义： 表示可氧化分解水体中所溶存的含碳有机物，也包括 化学氧化法难以氧化的含N和P的有机物质。它在一定 程度上可以反映水体中有机物质含量。 2.2 the index of marine oxygen-demanded pollution
◼ If an organic compound gives the same oxygen demand for TOD, COD and BOD, it is readily oxidized and metalolized. 2.2 the index of marine oxygen-demanded pollution
◼ If an organic compound gives the same oxygen demand for TOD, COD and BOD, it is readily oxidized and metalolized. 2.2 the index of marine oxygen-demanded pollution
◼ Chemical oxygen demand (COD) : The amount of oxygen taken up when hot acid dichromate is used. ◼ COD: often used because it is rapidly and can be used in short-term quality control. ◼ For more resistant compounds, COD will be a fraction of TOD, and this depends on the efficiency of this method of oxidation. 2.2 the index of marine oxygen-demanded pollution
◼ Chemical oxygen demand (COD) : The amount of oxygen taken up when hot acid dichromate is used. ◼ COD: often used because it is rapidly and can be used in short-term quality control. ◼ For more resistant compounds, COD will be a fraction of TOD, and this depends on the efficiency of this method of oxidation. 2.2 the index of marine oxygen-demanded pollution