2007 Fiscal Year Final Research Report Summary
Treatment of wastewater containing phenol and ammonium-nitrogen by novel DHS process.
| 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
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| Keywords | combined DHS process / ammonium-nitrogen / nitrite / nitrate / phenol |
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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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