FRACTION OF PHOSPHORUS COMPOSITION IN SEWAGE SLUDGE AND ITS STATE CHANGE BY ACID TREATMENT
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- WAKAYAMA Hizuru
- 大阪市立大学院工学研究科都市系専攻
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- KANJO Yoshinori
- 大阪市立大学院工学研究科都市系専攻
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- OHTA Masafumi
- 大阪市立大学院工学研究科都市系専攻
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- SHIRAI Mayu
- 大阪市立大学工学部都市学科
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- MIZUTANI Satoshi
- 大阪市立大学院工学研究科都市系専攻
Bibliographic Information
- Other Title
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- 下水消化汚泥中のリン組成分布と酸処理による変化
- ゲスイ ショウカ オデイチュウ ノ リン ソセイ ブンプ ト サン ショリ ニ ヨル ヘンカ
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Abstract
In order to recover the phosphorus from sewage sludge and to prevent from the trouble at incineration plants caused by phosphorus in sludge, fractionation analysis of phosphorus in sewage sludge of eleven municipal sewage treatment plants and acid treatments were performed. The results of fractionation analysis showed that phosphate fractions and particulate phosphate fraction in digested sludge ranged 73 to 89% and 24 to 62%, respectively. The results of acid treatments showed that particulate phosphate fraction could be dissolved to phosphate ion thoroughly at the pH condition of 2 with sulfuric acid, 5 with citric acid, or 4 with acetic acid. Judging from these results, dissolved fraction of phosphorus in digested sludge will be able to increase more than doubled using with acid treatment.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 72 (7), III_243-III_248, 2016
Japan Society of Civil Engineers
