THE CONTINUOUS MEASUREMENT OF SHORT-TIME BOD

The continuous short-time BOD-measurement BOD-M3 is a measuring process which has been developed by STIP Siepmann und Teutscher GmbH in Reinheim and which has met with general approval in more than 200 local and industrial applications up to now. The BOD-M3-measuring unit determines the BOD ˆ continuously in a complete way ˆ with a measuring delay of 3 minutes ˆ within a measuring range from 2 - 10,000 mg BOD/1 ˆ and makes it availiable as output signal. Because of the short time lag (compared to 5 days for BODs, a few hours for COD, and approximately one-half hour for the “plateau BOD”) and the continuous recording of the measurements, it is possible to achieve load-dependent control of the sewage plant. The method of measurement is described and two applications are explained.