A STUDY ABOUT INCREASE OF QUANTITY OF PHOSPHORUS COLLECTION BY ALKALINE ELUTION OF INCINERATOR ASH OF SEWAGE SLUDGE
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- YOSHIDA Yoshiko
- 川崎市役所 下水道管理部
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- NOIKE Tatsuya
- 社団法人 土木学会 東北大学 大学院工学研究科 土木工学専攻
Bibliographic Information
- Other Title
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- 下水汚泥焼却灰のアルカリ溶出によるリン回収量の増大に関する研究
Abstract
A phosphate rock is one of the natural resources of which exhaustion have been recognized in the world. Incinerator ash of sewage sludge is a hopeful substitute resource of phosphate rock. In this study, the increase in phosphorus recovery efficiency in the alkaline elution of incinerator ash of sewage sludge was investigated by adding coagulants to the sludge transported with pressure. PAC, sodium aluminate and poly-iron sulfate were used as coagulants. As a result, coagulant restrained phosphorus discharged from sludge by pH adjustment and decreased phosphorus in supernatant. PAC has wide range of use optimum pH and phosphorus recovery efficiency by alkali solution increased from 49% to 84% at pH4.
Journal
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- Doboku Gakkai Ronbunshu
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Doboku Gakkai Ronbunshu 2004 (769), 55-64, 2004-08-22
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390282680579283456
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- NII Article ID
- 130003984819
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- ISSN
- 18827187
- 02897806
- http://id.crossref.org/issn/02897806
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed