| 摘要 |
PROBLEM TO BE SOLVED: To enhance the efficiency of a photocatalyst detoxifying a wastewater containing an organochlorine compd. while enabling the recovery and reutilization of the photocatalyst. SOLUTION: A glass pipe 2 being spirally wound around a light source pipe 1 emitting ultraviolet rays is packed with pelletized titanium oxide 3, and a wastewater containing an organochlorine compd. is passed through the glass pipe 2. Chloride ions formed by the decomposition of the organochlorine compd. in wastewater are reacted with calcium carbonate to produce calcium chloride. This calcium chloride is utilized as a desiccant or an antifreezing agent.
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