Compatibility of the Ultraviolet Light-Ozone System for Laundry Waste Water Treatment in Nuclear Power Plants
- 1 August 1997
- journal article
- research article
- Published by Informa UK Limited in Nuclear Technology
- Vol. 119 (2), 149-157
- https://doi.org/10.13182/nt97-a35383
Abstract
As an alternative treatment system for laundry waste water in nuclear power plants, a system was chosen in which such organic compounds as surfactant would be oxidized by ultraviolet (UV) light and ozone. The system compatibility, UV light source, and dissolved ozone concentration were examined through experiments. First, ozone gas was absorbed in the waste water. After the dissolved ozone concentration equilibrated at the desired value, the waste water was irradiated by a mercury lamp. Then, the time dependence of the concentrations of the organic compounds, the dissolved ozone, and the hydrogen peroxide were measured to estimate the treatment rate of the system. The mercury lamp with a 105-Pa vapor pressure achieved large UV radiation and a treatment rate increase, leading to a compatible system without secondary waste generation. The effect of the dissolved ozone concentration on the treatment rate was saturated when concentration was >3.3 × 10-4 mol/10-3 m3 at the time UV radiation was started. Numerical results indicated the saturation was due to hydrogen peroxide generation, which prevents hydroxyl radical generation.Keywords
This publication has 6 references indexed in Scilit:
- Special issue : From the symposium "high technology of purification and treatment of the environment water".(2).Complete circulation treatment of human excreta combine with photooxidation.Deodorization and decolorization system of recirculating water ( flushing water ) of household wastewater treatment tank.Journal of Environmental Conservation Engineering, 1994
- Special issue : From a symposium "high technology of purification and treatment of environmental water".(1).Research on water treatment of sea water and fresh water using ozone.Application to antifouling technology and pond purification.Journal of Environmental Conservation Engineering, 1994
- Special issue : From a symposium "high technology of purification and treatment of environmental water".(1).Purification system of lake and pond using photooxidation decomposition method.Journal of Environmental Conservation Engineering, 1994
- Special issue : From a symposium "high technology of purification and treatment of environmental water".(1).Purification of landscape water byphotooxidation method.Journal of Environmental Conservation Engineering, 1994
- Destruction of pollutants in water with ozone in combination with ultraviolet radiation. 3. Photolysis of aqueous ozoneEnvironmental Science & Technology, 1988
- Decomposition rate of ozone in water with ultraviolet radiation.JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1987