采用正交试验法研究了钢渣微粉固化剂对重金属污染土壤的修复效果.原土经过固化处理后,Cr、Ni、Cu、Zn和Pb的浸出浓度大大降低,浸出浓度普遍下降了99％以上,但掺量、时间、固液比、钢渣微粉比例对重金属的浸出浓度呈现了不同的影响,浸出浓度结果证明了钢渣粉除了具有胶凝性的特征外,其多空性和富含碳酸盐、铁锰氧化物等特点能够使其具有更加优越的固化效果.同时,经过处理后的固化体无侧限抗压强度可达2.4 MPa以上,且与时间、掺量具有良好的相关性,但钢渣微粉比例的增加能够一定程度降低固化体的前期强度.
参考文献
| [1] | 杨勇;何艳明;栾景丽;刘景洋;郭玉文.国际污染场地土壤修复技术综合分析[J].环境科学与技术,2012(10):92-98. |
| [2] | 赵述华;陈志良;张太平;彭晓春;张越男;丁琮;雷国建.重金属污染土壤的固化/稳定化处理技术研究进展[J].土壤通报,2013(6):1531-1536. |
| [3] | Mery Malandrino;Ornella Abollino;Sandro Buoso;Agnese Giacomino;Carmela La Gioia;Edoardo Mentasti.Accumulation of heavy metals from contaminated soil to plants and evaluation of soil remediation by vermiculite[J].Chemosphere: Environmental toxicology and risk assessment,20112(2):169-178. |
| [4] | 宋云;李培中;魏文侠.探索构建重金属污染土壤固化/稳定化修复效果评价体系[J].环境保护,2014(15):61-63. |
| [5] | Eisa E. Hekal;Wafaa S. Hegazi;Essam A. Kishar;Maha R. Mohamed.Solidification/stabilization of Ni(II) by various cement pastes[J].Construction and Building Materials,20111(1):109-114. |
| [6] | 陈琳;潘如意;沈晓冬;马素花;黄叶平;钟白茜.粉煤灰-矿渣-水泥复合胶凝材料强度和水化性能[J].建筑材料学报,2010(3):380-384. |
| [7] | R. Taylor;I.G. Richardson;R.M.D. Brydson.Composition and microstructure of 20-year-old ordinary Portland cement-ground granulated blast-furnace slag blends containing 0 to 100% slag[J].Cement and Concrete Research,20107(7):971-983. |
| [8] | 杜延军;金飞;刘松玉;陈蕾;张帆.重金属工业污染场地固化/稳定处理研究进展[J].岩土力学,2011(1):116-124. |
| [9] | Solidification/stabilisation of metals contaminated industrial soil from former Zn smelter in Celje, Slovenia, using cement as a hydraulic binder[J].Journal of hazardous materials,20101/3(1/3):926. |
| [10] | 樊恒辉;高建恩;吴普特;娄宗科.水泥基土壤固化剂固化土的物理化学作用[J].岩土力学,2010(12):3741-3745. |
| [11] | 蔡轩;龙新宪;种云霄;吴启堂.无机-有机混合改良剂对酸性重金属复合污染土壤的修复效应[J].环境科学学报,2015(12):3991-4002. |
| [12] | Kumpiene J;Montesinos IC;Lagerkvist A;Maurice C.Evaluation of the critical factors controlling stability of chromium, copper, arsenic and zinc in iron-treated soil[J].Chemosphere: Environmental toxicology and risk assessment,20072(2):410-417. |
| [13] | 郭燕妮;方增坤;胡杰华;谢洪珍;李黎婷;叶志勇.化学沉淀法处理含重金属废水的研究进展[J].工业水处理,2011(12):9-13. |
| [14] | 王鹤.施用硅酸盐和生物炭对土壤铅形态与含量的影响[J].农业科技与装备,2013(04):10-12. |
| [15] | Sune N;Sanchez G;Caffaratti S;Maine MA.Cadmium and chromium removal kinetics from solution by two aquatic macrophytes[J].Environmental Pollution,20072(2):467-473. |
| [16] | 朱伟;林城;李磊;大木宜章.以膨润土为辅助添加剂固化/稳定化污泥的试验研究[J].环境科学,2007(5):1020-1025. |
| [17] | Qiang Wang;Jianwei Yang;Peiyu Yan.Cementitious properties of super-fine steel slag[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2013:35-39. |
| [18] | 陈日高;王阵地;王玲.钢渣-矿渣-水泥复合胶凝材料的水化性能和微观形貌[J].武汉理工大学学报,2012(5):25-29. |
| [19] | Suksun Horpibulsuk;Runglawan Rachan;Yuttana Raksachon.ROLE OF FLY ASH ON STRENGTH AND MICROSTRUCTURE DEVELOPMENT IN BLENDED CEMENT STABILIZED SILTY CLAY[J].Soils and foundations,20091(1):85-98. |
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