DEVICE AND METHOD FOR REDUCING THE HYDROGEN PEROXIDE AND PERACETIC ACID CONTENT IN A WATER FLOW

摘要

1 5Device and method for reducing the hydrogen peroxide and peracetic acid content in a water flowAbstract:A device comprising a measuring device for determining the flow rate of a water stream, a measuring device for determining the concentration of hydrogen peroxide in the water stream, a measuring device for determining theconcentration of peracetic acid in the water stream, a metering device for metering a reducing agenT into the10 water stream downstream of the measuring devices for the concentrations, and a control device which, from the flowrate of the water stream, the concentration of hydrogen peroxide in. the water stream and the coneentralion of peracetic acid in the water stream, calculates an amount of15 reducing agent for reducing the content of hydrogen peroxide and peracetic acid to a desired value and actuates the metering device for metering the reducing agent, makespossible reliable reduction of the content of hydrogen peroxide and perapetic acid in a. water stream. The device20 is suitable for reducing the content of hydrogen peroxideand peracetic acid in a water stream which is withdrawn from ballast water tanks of a ship.