颜湘华1,2,,
范琴4,
沈重阳3,
王兴润1,2
1.北京建工环境修复股份有限公司污染场地安全修复技术国家工程实验室，北京 100015
2.中国环境科学研究院环境基准与风险评估国家重点实验室，北京 100012
3.中国农业大学资源与环境学院，北京 100193
4.四川省环境保护科学研究院，成都 610041
基金项目: 北京建工环境修复股份有限公司污染场地安全修复技术国家工程实验室开放基金NEL-SRT201705
国家重点研发计划项目2018YFC1802200北京建工环境修复股份有限公司污染场地安全修复技术国家工程实验室开放基金(NEL-SRT201705)
国家重点研发计划项目(2018YFC1802200)
Chemical reduction remediation of chromium residue and soil mixture from a chromium-contaminated site
SHI Kaiyu1,2,3,,YAN Xianghua1,2,,
FAN Qin4,
SHEN Chongyang3,
WANG Xingrun1,2
1.National Engineering Laboratory for Site Remediation Technologies, BCEG Environmental Remediation Co.Ltd., Beijing 100015, China
2.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
3.College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
4.Sichuan Academy of Environmental Sciences, Chengdu 610041, China
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摘要:针对目前铬污染场地表层重污染铬渣混土难处理的问题，选用河南义马某铬盐厂铬渣堆场表层渣土混合物为研究对象，在分析其理化特性的基础上，研究CaS4、FeSO4·7H2O和葡萄糖3种还原药剂对Cr(VI) 的还原效率，通过改变药剂投加量、反应体系pH、反应时间等条件，优化修复工艺参数。结果表明，3种还原药剂对渣土混合物的最佳还原效率大小为CaS4(98.50%)>FeSO4·7H2O(72.21%)>葡萄糖(51.45%)。CaS4还原修复渣土混合物的最优工艺参数为：药剂投加量为还原反应理论当量的2倍，体系pH在3～9，反应时间0.5 h。
关键词: 污染场地修复/
渣土混合物化学还原/
铬污染/
土壤修复
Abstract:It’s difficult to safely treat the chromium residue and soil mixture at chromium-contaminated sites. In this study, the chromium residue and soil mixture of a chrome salt plant in Yima city, Henan province was taken as remediation object. On the basis of analyzing the physicochemical properties of the mixture, the effects of doses of three reducing agents, such as CaS4, FeSO4·7H2O and glucose, pH and time of reaction system on the reduction rate of Cr(VI) were studied, then these operational parameters were optimized. Results showed that the order of the optimum reduction efficiencies by these three reducing agents was CaS4 (98.5%) >FeSO4·7H2O (72.2%) > glucose (51.5%). The optimal process parameters for the reduction and remediation of the residue and soil mixture by CaS4 were following: CaS4 dosage of 2 times the theoretical equivalent of the reduction reaction, pH = 3~9, and 0.5 h reaction time.
Key words:contaminated site remediation/
chemical reduction of the chromium residue and soil mixture/
chromium pollution/
soil remediation.
| [1] | FAMER J G, GRAHAM M C, THOMAS R P, et al. Assessment and modelling of the environmental chemistry and potential for remediative treatment of chromium contaminated land[J]. Environmental Geochemistry Health, 1999, 21(4): 331-337. |
| [2] | 江玲龙, 李瑞雯, 毛月强, 等. 铬渣处理技术与综合利用现状研究[J]. 环境科学与技术, 2013, 36(6): 480-483. |
| [3] | MARIA C, CHAD P. J, GEETA D. A comparative evaluation of hexavalent chromium treatment in contaminated soil by calcium polysul?de and green-tea nanoscale zero-valent iron[J]. Journal of Hazardous Materials, 2012, 201-202: 33-42. |
| [4] | ANTONIO V, MARTHA R, SERGIO H, et al. Pilot scale treatment of chromite ore processing residue using sodium sulfide in single reduction and coupled reduction/stabilizaton processes[J]. Journal of Hazardous Materials, 2012, 207-208: 97-102. |
| [5] | 郭丽莉, 许超, 李书鹏, 等. 铬污染土壤的生物化学还原稳定化研究[J]. 环境工程, 2014, 32(10): 152-156. |
| [6] | 郑建中, 石美, 李娟, 等. 化学还原固定化土壤地下水中六价铬的研究进展[J]. 环境工程学报, 2015, 9(7): 3077-3085. |
| [7] | GRAHAM M C, FARMER J G, ANDERSON P, et al. Calcium polysulfide remediation of hexavalent chromium contamination from chromite ore processing residue[J]. Science of the Total Environment, 2006, 364(1/2/3): 32-44. |
| [8] | 梁金利, 蔡焕兴, 段雪梅, 等. 还原法修复六价铬污染土壤的研究[J]. 环境科学与管理, 2013, 38(3): 80-83. |
| [9] | 刘增俊, 夏旭, 张旭, 等. 铬污染土壤的药剂修复及其长期稳定性研究[J]. 环境工程, 2015, 33(2): 160-163. |
| [10] | 王宇峰, 杨强, 刘磊, 等. 不同还原剂对某铬渣污染场地修复效果的实验研究[J]. 环境污染与防治, 2013, 38(4): 384-391. |
| [11] | 刘雪. 铬渣污染土壤特性与异位修复技术研究[D]. 杨凌: 西北农林科技大学, 2010. |
| [12] | 国家环境保护总局. 固体废物浸出毒性浸出方法 硫酸硝酸法: HJ/T 299-2007[S]. 北京: 中国环境科学出版社, 2007. |
| [13] | 国家环境保护总局. 固体废物浸出毒性浸出方法 翻转法: GB 5086.1-1997[S]. 北京: 中国环境科学出版社, 1997. |
| [14] | 国家环境保护局. 水质 六价铬的测定 二苯碳酰二肼分光光度法: GB 7467-1987[S]. 北京: 中国环境科学出版社, 1987. |
| [15] | 环境保护部. 固体废物 六价铬的测定 碱消解/火焰原子吸收分光光度法: HJ 687-2014[S]. 北京: 中国环境科学出版社, 2014. |
| [16] | BAI Y L, XU H B, ZHANG Y, reduction Hydrogen: A novel method of synthesizing ultra-fine chromic oxide powder[J]. Journal of Wuhan University of Technology, 2010, 25(3): 388-390. |
| [17] | 邓时琴. 关于修改和补充我国土壤质地分类系统的建议[J]. 土壤, 1986, 18(6): 304-311. |
| [18] | DIMITRIS D, MARIA C, DEOK HYUN M, et al. Ettringite-induced heave in chromite ore processing residue (COPR) upon ferrous sulfate treatment[J]. Environmental Science & Technology, 2006, 40 (18): 5786-5792. |
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铬污染场地渣土混合物的化学还原修复
史开宇1,2,3,,颜湘华1,2,,
范琴4,
沈重阳3,
王兴润1,2
1.北京建工环境修复股份有限公司污染场地安全修复技术国家工程实验室，北京 100015
2.中国环境科学研究院环境基准与风险评估国家重点实验室，北京 100012
3.中国农业大学资源与环境学院，北京 100193
4.四川省环境保护科学研究院，成都 610041
基金项目: 北京建工环境修复股份有限公司污染场地安全修复技术国家工程实验室开放基金NEL-SRT201705 国家重点研发计划项目2018YFC1802200北京建工环境修复股份有限公司污染场地安全修复技术国家工程实验室开放基金(NEL-SRT201705) 国家重点研发计划项目(2018YFC1802200)
关键词: 污染场地修复/
渣土混合物化学还原/
铬污染/
土壤修复
摘要:针对目前铬污染场地表层重污染铬渣混土难处理的问题，选用河南义马某铬盐厂铬渣堆场表层渣土混合物为研究对象，在分析其理化特性的基础上，研究CaS4、FeSO4·7H2O和葡萄糖3种还原药剂对Cr(VI) 的还原效率，通过改变药剂投加量、反应体系pH、反应时间等条件，优化修复工艺参数。结果表明，3种还原药剂对渣土混合物的最佳还原效率大小为CaS4(98.50%)>FeSO4·7H2O(72.21%)>葡萄糖(51.45%)。CaS4还原修复渣土混合物的最优工艺参数为：药剂投加量为还原反应理论当量的2倍，体系pH在3～9，反应时间0.5 h。
English Abstract
Chemical reduction remediation of chromium residue and soil mixture from a chromium-contaminated site
SHI Kaiyu1,2,3,,YAN Xianghua1,2,,
FAN Qin4,
SHEN Chongyang3,
WANG Xingrun1,2
1.National Engineering Laboratory for Site Remediation Technologies, BCEG Environmental Remediation Co.Ltd., Beijing 100015, China
2.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
3.College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
4.Sichuan Academy of Environmental Sciences, Chengdu 610041, China
Keywords: contaminated site remediation/
chemical reduction of the chromium residue and soil mixture/
chromium pollution/
soil remediation
Abstract:It’s difficult to safely treat the chromium residue and soil mixture at chromium-contaminated sites. In this study, the chromium residue and soil mixture of a chrome salt plant in Yima city, Henan province was taken as remediation object. On the basis of analyzing the physicochemical properties of the mixture, the effects of doses of three reducing agents, such as CaS4, FeSO4·7H2O and glucose, pH and time of reaction system on the reduction rate of Cr(VI) were studied, then these operational parameters were optimized. Results showed that the order of the optimum reduction efficiencies by these three reducing agents was CaS4 (98.5%) >FeSO4·7H2O (72.2%) > glucose (51.5%). The optimal process parameters for the reduction and remediation of the residue and soil mixture by CaS4 were following: CaS4 dosage of 2 times the theoretical equivalent of the reduction reaction, pH = 3~9, and 0.5 h reaction time.
