CAJ | 학술논문

采用水泥固化法对某冶炼厂含重金属硫化物底泥进行固化处理。主要分析了底泥中重金属含量和不同提取剂对重金属浸出量的影响，并考察在不同底泥掺量比例和不同养护龄期对重金属浸出的影响，实验表明：重金属浸出浓度随水泥掺入比例和养护时间的增加而减少，固化最佳配比为底泥掺入量60%，固化体养护期10天，固化效果良好且稳定；固化体中Pb、 Zn和Cd浸出毒性低于国家标准，但Tl的浸出仍存在显著风险。
채용수니고화법대모야련엄함중금속류화물저니진행고화처리。주요분석료저니중중금속함량화불동제취제대중금속침출량적영향，병고찰재불동저니참량비례화불동양호령기대중금속침출적영향，실험표명：중금속침출농도수수니참입비례화양호시간적증가이감소，고화최가배비위저니참입량60%，고화체양호기10천，고화효과량호차은정；고화체중Pb、 Zn화Cd침출독성저우국가표준，단Tl적침출잉존재현저풍험。
Cement solidification technology was used to solidify heavy metals contaminated substrate sludge which comes from a Smelter. The content and the leaching concentration of heavy metals in substrate sludge were mainly analyzed. Using the cement solidification technology to stabilize the heavy metal in substrate sludge, the best parameters were determined by examining the leaching result of heavy metals under different mixed ratio of substrate sludge and curing time condition. Experiments result showed that the leaching of heavy metals concentration decreased along with the increase of cement admixture ratio and curing time, the best substrate sludge admixture ratio was 60%, and curing time was 10 days. After cement solidification, the leaching of Pb, Zn and Cd were all below national standard, while the leaching Tl concentration still had a significant risk.