| 泥沙浓度和水相初始浓度对泥沙吸附重金属影响的研究 |
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| 引用本文： | 黄岁梁,万兆惠,王兰香.泥沙浓度和水相初始浓度对泥沙吸附重金属影响的研究[J].环境科学学报,1995,15(1):66-76. |
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| 作者姓名： | 黄岁梁 万兆惠 王兰香 |
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| 作者单位： | 中国水利水电科学研究院，中国环境科学研究院，清华大学水电系泥沙研究室 |
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| 基金项目： | 国家自然科学基金,水利水电科学基金 |
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| 摘 要： | 从吸附动力学方程和质量守恒方程出发，导得静态试验中，重金属离子的泥沙吸附量和水相浓度随时间变化的计算公式，进而导出重金属离子的泥沙平衡吸附量和水相平衡浓度随泥沙吸附特性、水相初始浓度（泥沙初始吸附量）和泥沙浓度变化的计算公式。试验结果表明，泥沙浓度不影响吸附特性参数如饱和吸附量ｂ，解吸与吸附速率系数之比ｋ及吸附速率系数ｋ＿１，而水相初始浓度对ｋ＿１有较大影响；对平衡吸附量而言，泥沙浓度和水相初始浓度均有较大影响，并可从质量守恒得到解释。
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| 关 键 词： | 重金属 吸附 泥沙。 |
| 收稿时间： | 1993/10/20 0:00:00 |
STUDY ON THE EFFECTS OF CONCENTRATIONS OF HEAVY METALS IN SEDIMENT AND INITALLY IN WATER PHASE ON THEIR ADSORPTION |
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| Huang Suiliang,Wan Zhaohui and Wang Lanxiang.STUDY ON THE EFFECTS OF CONCENTRATIONS OF HEAVY METALS IN SEDIMENT AND INITALLY IN WATER PHASE ON THEIR ADSORPTION[J].Acta Scientiae Circumstantiae,1995,15(1):66-76. |
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| Authors: | Huang Suiliang Wan Zhaohui and Wang Lanxiang |
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| Affiliation: | Chinese Institute of Water Conservancy and Hydroelectric Power Research, Beijing 100044,Chinese Institute of Water Conservancy and Hydroelectric Power Research, Beijing 100044 and Chinese Academic Institute of Environmental Scienese |
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| Abstract: | Adsorption of heavy metals on sediment and the concentration of heavy metals in waterphase both as a function of time in static experiments were derived from the basic equationsof adsorption dynamics and mass balance. The results show that the concentrations of heavymetals in sediment had no effect on the behavior of sediment adsorbing heavy metals,in-cluding saturated adsorption,coefficient of adsorption rate,and desorption rate,The initialconcentration of heavy metals on water phase could much more significantly influence the co-efficients of adsorption rate desorption rate. It was also found thta the concentration ofheavy metal in sediment and the initial concentration of heavy metals in water phase had ef-fects on their equilibrated adsorption on sediment and their equilibrium concentration in wa-ter phase,and this could be explatined by mass balance. |
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| Keywords: | heavy metal adsorption-desorption sediment |
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