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Biochemical Oxygen demand (BOD) is an important parameter in water resource management to measure the quality of water and treatment results in wastewater treatment facilities.
In routine applications BOD determination is used to check the waste water in the inflow and discharge effluent of waste water treatment plants. Depending on the measurement site and the type of discharge BOD values can vary from a few mg/l to several thousand mg/l.
Several methods are available for the measurement of BOD:
- In 'dilution BOD' the oxygen content of a sample is measured with a dissolved oxygen sensor before and after an incubation period of 5 days. The difference between the measurements is the BOD5Â value; this is the official EPA method
- In BOD 'self check' with a respirometer, the reduction in oxygen causes a definitive pressure difference that can be measured with a pressure sensor. This practical method is very easy to perform.
- The OxitopB6M system for actively respiring soils with strong CO2 development the MG 1.0 measuring vessel is used.
- The Oxitop B6 system is the alternative which uses PF 45/500ml sample vessels
- OxiTop Control AN6 is a package for anaerobic applications with 6 x 1000ml measuring units
- OxiTop Control AN12 has 12 x 250ml measuring units