To decompose organochlorine compounds including dioxins to suppress their toxicity, by irradiating an object to be treated, containing organic chlorine compounds like dioxins, such as soil, sludge, slurry, and water, with an electron wave.
An electron wave is irradiated from an electron wave generator 8 to water to be treated or sludge after or during any one of treatments in biological treatment equipment 3, coagulative precipitation treatment equipment 4, and sludge treatment equipment 6. In this case, when a visible ray of a prescribed wave length is applied to a light receiving material, free electrons in the light receiving material absorb the light and become high-level energy states to resonate with the wave motion of the electron wave, thereby atomic bonds are cleaved. Therefore, the irradiation of the electron wave cleaves and decomposes C-Cl bond in organochlorine compounds such as dioxins during the treatment, so that the toxicity can be reduced.
TERAO YASUSHI
MINAMI HIROKAZU
