| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
1,4-Dioxane is a toxic substrate for humans and also major pollutant of water environments. In many types of wastewater contains 1,4-dioxane and it discharged to surface water. Therefore, it is important to remove 1,4-dioxane from effluent on the wastewater treatment plants. Biological treatment is an effective way to remove organic chemicals from wastewater with low energy consumption. However, it was well known that 1,4-dioxane is persistent against biodegradation. The author group has recently reported that succeeded in isolation of the four species of 1,4-dioxane-degrading bacteria. And then, novel biological 1,4-dioxane treatment process was developed. In the present study, effect of main elements such as nitrogen and phosphorus on the biological 1,4-dioxane treatment process was evaluated. As a results, stable 1,4-dioxane removal performance was maintained under 5 mg/L of nitrogen concentration. Moreover, phosphorus concentration can be reduced to 1 mg/L (reported value 45).
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