|TITLE||Development of Ultraviolet Ray/Ozone Combination Dioxin Decomposition and Treatment Technique
(Joint Program to Promote Technological Development with the Private Sectors)
|AUTHOR||RITE-NEYAGAWA LABORATORY in Kurabo Industries, Ltd.|
Dioxin etc. (dioxin) emitted from incinerators are now grave problems. High levels of residual dioxin are detected from surrounding soil. Our objective was development of a technique to decompose incinerator residual dioxin etc. without a secondary contamination.
dioxin-contaminated soil etc. into a wash tank and allow dioxin to dissolve in
water. Send the water to a decomposition equipment and, after dioxin
decomposition, send the water back to the wash tank. This allows reducing
dioxin amount finally below the soil environmental standards and the water
quality environmental standards in a closed system.
Outlines of research and development
1) Outlines of drainage treatment equipment
The drainage treatment equipment has been
manufactured as units to allow trucking to treatment spots. The wash tank unit
has a stock solution tank that can wash dioxin-contaminated soil and store
dioxin-containing drainage. The ultraviolet ray/ozone combination underwater
dioxin removal unit has an ozone generator and an ultraviolet ray tower.
2) The achievements of 2003
a) In the experiment for decomposing dioxins, we researched treatment factor and we made a trial caluculation of the reduce greenhouse gass emissions.
b) We made experiments for decomposing dioxins of the compound pollutions and obtained basic data.
c) We designed and fabricated a small machinery of advanced oxidation process and use in the laboratory experiment.
The development for 2004 will be performed on the basis of the findings obtained in the present experiments.