Instantaneous determination of chemical oxygen demand of effluent or usable water, by measurement of uptake of highly active oxygen e.g. injected ozone

摘要

Process and arrangement for instantaneous determination of chemical oxygen demand (C.OThe process allows continuous measurement on flowing water, by using a reduced water flow rate in a tubular by-pass (plug flow reactor). The water is charged with as high an amount of dissolved, active oxygen as is possible, and the concentration of oxygen measured immediately at a first measuring station SG1. The unreacted concentration is then measured at the outlet end of the tubular reactor. The differential represents the C.O