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BOD measurements Respiration
Biological Oxygen Demand
BOD measurement according to EN 1899-1 and EN1899-2 and for self-checks
Biological Oxygen Demand (BOD) is an important parameter in water resource management. BOD is a parameter used tomeasure the quality of water and treatment results in wastewater. In addition, BOD analysis potential is used in the planning and designwastewater treatment facilities. In routine use BOD determination is used to check the wastewater in the inflow and discharge of wastewater treatmentplants. Depending on the measurement site and type of wastewater the BOD value can lie between a few mg/l and several thousand mg/l. Severalmethods are available for carrying out the measurement.

BOD measurement

WTW offers various measuring systems for these methods.
In“dilution BOD” the oxygen content of a sample is measured with an oxygen sensor before and after an incubation period of 5 days. The difference betweenthe measurements is the BOD5 value; this is the official EPA method. In “BOD self-checks” with the respirometer the reduction in oxygen causesa definite pressure difference which can be measured by a pressure sensor. This method is very easy to carry out and is a practical method.Also both methods are very different, the measurements correlate for discharge analysis in municipal wastewater treatment facilities. Both [continua]

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