書誌事項
- タイトル別名
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- The Formation of Calcium Scales in Waste Landfill Sites
- サイシュウ ショブンジョウ ニ オケル カルシウムスケール セイセイ ノ ヨソ
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The formation of calcium scales have been found in leachate treatment facilities at landfill sites. This problem has a result of the landfilling of incineration ash which contained a large amount of soluble salts. 15 municipal landfill sites were investigated with regard to scale formation and chemical analysis of leacheates. Contributing factors such as calcium concentration, alkalinity, water temperature and ion strength, in particular the former two contributed to calcium scale formation in landfill leachates and the saturation pH (pHs) levels calculated were important. In using two convention indices of scale formation namely the Langelier Saturation Index and the Ryzner'Stability Index both were unsufficient in explaining real scale formation, the former overestimating the amounts and the latter underestimating the amounts. It is considered that if a leacheate is in a condition with pHs<7, calcium concentration>100 mg/1 and alkalinity>100 mg/1, these levels are liable to form calcium scales. Calcite as the main mineral and aragonite were found in real scale, while geochemical calculations showed the possible precipitation of calcite and dolomite, and the possible existence of aragonite, magnesite and huntite in oversaturated solution.
収録刊行物
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- 廃棄物学会論文誌
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廃棄物学会論文誌 9 (5), 215-223, 1998
一般社団法人 廃棄物資源循環学会
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詳細情報 詳細情報について
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- CRID
- 1390001205298719744
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- NII論文ID
- 10002842296
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- NII書誌ID
- AN10414685
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- ISSN
- 1883163X
- 18831648
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- NDL書誌ID
- 4541086
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可