Rational recovery method for phosphorus from sewage sludge treatment process based on the chemical fractionation analysis
| Project/Area Number |
24560667
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Osaka City University |
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Principal Investigator |
KANJO Yoshinori 大阪市立大学, 大学院工学研究科, 教授 (90177759)
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| Co-Investigator(Kenkyū-buntansha) |
MIZUTANI Satoshi 大阪市立大学, 大学院工学研究科, 准教授 (80283654)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | 下水汚泥 / リン回収 / 組成分析 / メタン発酵 / 酸処理 / MAP / HAP |
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| Outline of Final Research Achievements |
In order to find a rational recovery method for phosphorus from sewage sludge, the developed fractionation method was applied to several kinds of sewage sludge. The results showed that 50 to 80 % of phosphorus in digestion sludge was the fraction of phosphate ion or insoluble phosphate and phosphorus composition was quite different from other sludge.
If we apply the acid treatment to digestion sludge with citric acid or acetic acid and crystallization of hydroxyapatite from filtrate of acidified digestion sludge, it was suggested that the phosphorus recovery ratio leached to almost double.
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Report
(4 results)
Research Products
(5 results)
