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| Novosol法固定底泥中重金属研究 | |
| 引用本文： | 周杉,曾宪琴,张盼月,曾光明,吴珍,李娟.Novosol法固定底泥中重金属研究[J].环境科学学报,2010,30(1):111-116. |
| 作者姓名： | 周杉 曾宪琴 张盼月 曾光明 吴珍 李娟 |
| 作者单位： | 1. 湖南大学环境科学与工程学院,长沙,410082 2. 中蓝建设工程局,北京,100080 3. 北京林业大学环境科学与工程学院,北京,100083 |
| 基金项目： | 国家重大科技专项课题(No.2009ZX07423-003);;国家科技支撑计划项目(No.2006BAJ08B08)~~ |
| 摘 要： | 采用Novosol法处理河道疏浚底泥,固定底泥中的重金属,并研究了磷酸投加量、烧结温度和烧结时间对底泥重金属浸出的影响.研究结果表明,Novosol法处理底泥适宜的磷酸投加量为0.17mo.lkg-1,烧结温度为700℃,烧结时间为2h.采用毒性浸出方法(TCLP)浸取处理底泥,浸出液中Cd、Zn和Pb的浸出浓度均远远低于危险废物鉴别标准——浸出毒性鉴别(GB5085.3-2007)规定的限值.稳定浸出液pH为5时,优化条件下Novosol法处理后底泥中Cd、Zn、Pb的浸出量比原底泥的浸出量分别降低了77.4%、53.9%和39.4%.底泥中Zn和Cd的浸出受pH影响较大,当浸出液pH降到6以下时,Zn和Cd的浸出浓度显著增加;而底泥中的Pb由于在Novosol法处理过程转化成极为稳定的磷酸盐矿物结构,受pH影响较小. |
| 关 键 词： | 颤蚓 迁移 分布密度 底泥性质 |
| 收稿时间： | 4/6/2009 2:25:35 PM |
| 修稿时间： | 7/30/2009 4:53:48 PM |
Heavy metal immobilization in dredged sediments by the Novosol process |
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| ZHOU Shan,ZENG Xianqin,ZHANG Panyue,ZENG Guangming,WU Zhen and LI Juan.Heavy metal immobilization in dredged sediments by the Novosol process[J].Acta Scientiae Circumstantiae,2010,30(1):111-116. | |
| Authors: | ZHOU Shan ZENG Xianqin ZHANG Panyue ZENG Guangming WU Zhen and LI Juan |
| Abstract: | In this study,the effects of population density and sediment properties on the migration of Tubifex tubifex were investigated using a lab-scale simulation system. The results indicated that both the population density and the sediment properties had significant effects on the migration behavior of T. tubifex. The migration rate increased when population density increased since the increased population density resulted in a shortage of food. Thereafter,the migration rate decreased because the energy for migr... |
| Keywords: | Tubifex tubifex migration population density sediment properties |
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