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題 名 | 水泥固化體長期抗硫酸鹽侵蝕之研究=Leaching Behavior of Heavy Metals from Cement-Slag Solidified Products under Long-Term Sulfate Attack |
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作 者 | 李釗; 于惇德; 曾迪華; | 書刊名 | 中國環境工程學刊 |
卷 期 | 7:2 1997.06[民86.06] |
頁 次 | 頁97-104 |
分類號 | 440.325 |
關鍵詞 | 重金屬污泥; 硫酸鹽侵蝕; 固化處理; 水淬壚石; 水玻璃; Heavy metal sludge; Sulfate attack; Cement solidification; Slag; Sodium silicate; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以水淬爐石取代部份第五型抗硫水泥,並以水玻璃為添加劑對重金屬污泥進行固化處理,探討固化體在不同硫酸鹽溶液中浸泡5年後重金屬的溶出行為。研究結果顯示,硫酸鹽侵蝕會增加固化體中重金屬的溶出量,經長期的浸泡後,重金屬的溶出量亦會大幅增加。若增加固化體的水泥用量和使用水玻璃為添加劑,可降低重金屬的溶出量,但是水玻璃降低重金屬溶出量的功能,會隨浸泡時間增加而遞減,且以水淬爐石取代部份水泥並不能增加固化體抵抗硫酸鹽長期侵蝕的能力。 |
英文摘要 | An electroplating sludge was solidifield by using a slag to replace a part of type V cement with sodium silicate as admixture. The leachability of heavy metals from solidified products under sulfate attack after soaking in sodium sulfate and magnesium sulfate solutions was investigated up to five year. Test results showed that the leachability of heavy metals increased with increasing of soaking time as well as the amount of slag replacement. Leachability might be reduced by increasing the cement/sludge ratio or by sodium silicate addition in solidified products. However, the leachability was significantly increased after longterm sulfate attack, and the efficiency of sodium silicate was reduced with increased soaking time. |
本系統中英文摘要資訊取自各篇刊載內容。