| Project/Area Number |
18510081
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental technology/Environmental materials
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| Research Institution | Kisarazu National College of Technology |
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Principal Investigator |
UEMURA Shigeki Kisarazu National College of Technology, Department of Civil Engineering, Associate professor (60300539)
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| Project Period (FY) |
2006 – 2007
|
| Project Status |
Completed (Fiscal Year 2007)
|
| Budget Amount *help |
¥2,770,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2006: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | combined DHS process / ammonium-nitrogen / nitrite / nitrate / phenol / コークス炉ガス洗浄排水 |
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| Research Abstract |
Down-flow hanging sponge (DHS) reactor was applied for efficient organic removal and ammonium oxidation of high salinity wastewater. The combined DHS process which was made by connecting three identical DHS reactors in series was fed with an artificial coke-oven wastewater containing a large amount of phenol and ammonium nitrogen with high salinity. Organics were removed mainly in the 1st reactor while almost all of ammonium nitrogen was oxidized in the following reactors. As a result of microflora analysis, bacterial clones involved in nitrification were rather detectable in the 2nd and 3rd reactors than in the 1st reactor, suggesting that different microfloras were established along the DHS.
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