2019 Volume 55 Issue 1 Pages 1-13
The Japanese effluent standard for 1,4－dioxane was set in 2012; however, the provisional standards have been applied for specific industries until 2021. Due to high physicochemical stability of 1,4－dioxane, most conventional wastewater treatment techniques are ineffective for the removal of 1,4－dioxane from industrial wastewater. Moreover, the advanced oxidation process, which has been proven to be effective for 1,4－dioxane degradation, has serious problems with regard to economic efficiency and practical utility. On the other hand, in recent years, several effective 1,4－dioxane-degrading bacteria were isolated, and biological wastewater treatments using those 1,4－dioxane-degrading bacteria have attracted much attention as a promising 1,4－dioxane treatment technique. In this paper, performances and problems of conventional wastewater treatment technology for 1,4－dioxane treatment are reviewed, and recent advances in the development of wastewater treatment techniques using 1,4－dioxane degrading bacteria are summarized.
