| 水泥、粉煤灰及DTCR固化/稳定化重金属污染底泥 |
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| 引用本文： | 谢华明,曾光明,罗文连,王川,黄兢,徐海音,杨朝晖.水泥、粉煤灰及DTCR固化/稳定化重金属污染底泥[J].环境工程学报,2013,7(3):1121-1127. |
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| 作者姓名： | 谢华明 曾光明 罗文连 王川 黄兢 徐海音 杨朝晖 |
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| 作者单位： | 1. 湖南大学环境科学与工程学院,长沙410082;环境生物与控制教育部重点实验室(湖南大学),长沙410082
2. 湖南华亿市政设计有限公司,长沙,410007 |
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| 基金项目： | 国家自然科学基金资助项目(30970105和51078131),国家"水体污染控制与治理"科技重大专项(2009ZX07212-001-02);长沙科技计划重点资助项目(K0802151-31) |
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| 摘 要： | 采用水泥、粉煤灰及有机硫稳定剂DTCR固化/稳定化处理重金属污染的底泥,考察固化体的抗压强度及重金属浸出毒性,确定了底泥固化/稳定化的最佳工艺条件。结果表明:仅用水泥固化/稳定化重金属污染底泥,固化体抗压强度随水泥用量的增加而上升,重金属浸出浓度则下降,当水泥∶干底泥质量比为0.6∶1.0时,固化体7 d抗压强度能达到0.99 MPa的标准值;进一步研究发现,水泥∶粉煤灰∶干底泥质量比为0.54∶0.06∶1.0时,重金属浸出浓度有所上升,但7 d及28 d抗压强度仍能分别达到1.2 MPa和2.8 MPa;加入DTCR后,当水泥∶粉煤灰∶DTCR∶干底泥质量比为0.54∶0.06∶0.012∶1.0时,固化体7 d及28 d抗压强度分别为1.1 MPa和2.1 MPa,醋酸缓冲溶液法浸出的Cd、Pb、Zn和Cu浓度分别为0.102、0.189、0.180和0.032 mg/L。
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| 关 键 词： | 重金属 污染底泥 水泥 粉煤灰 DTCR 抗压强度 浸出浓度 |
Stabilization/solidification of heavy metal contaminated sediment using cement, fly ash and DTCR |
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| Xie Huaming,Zeng Guangming,Luo Wenlian,Wang Chuan,Huang Jing,Xu Haiyin and Yang Zhaohui.Stabilization/solidification of heavy metal contaminated sediment using cement, fly ash and DTCR[J].Techniques and Equipment for Environmental Pollution Control,2013,7(3):1121-1127. |
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| Authors: | Xie Huaming Zeng Guangming Luo Wenlian Wang Chuan Huang Jing Xu Haiyin and Yang Zhaohui |
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| Institution: | 1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;3. Hunan HuaYi Municipal Design Co., Ltd., Changsha 410007, China;1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China |
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| Abstract: | |
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| Keywords: | heavy metal contaminated sediment cement fly ash DTCR compressive strength leaching concentration |
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