|本期目录/Table of Contents|

[1]钱会连,窦妍.地下水混合作用的碳酸钙溶解沉淀效应[J].地球科学与环境学报,2007,29(01):55-65.
　QIAN Hui,LIAN Jun,DOU Yan.Mixing Effects of Groundwater on CaCO3 Dissolution and Precipitation[J].Journal of Earth Sciences and Environment,2007,29(01):55-65.
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地下水混合作用的碳酸钙溶解沉淀效应(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第29卷
期数:
2007年第01期
页码:
55-65
栏目:
出版日期:
2007-03-15

文章信息/Info

Title:
Mixing Effects of Groundwater on CaCO3 Dissolution and Precipitation
作者:
钱会连; 窦妍
长安大学环境科学与工程学院,陕西西安710054
Author(s):
QIAN Hui; LIAN Jun; DOU Yan
School of Environmental Sciences and Engineering, Chang’ an University, Xi’an 710054, Shaanxi, China
关键词:
CaCO3; 天然地下水; 水溶液平衡化学模型; 混合溶蚀(沉淀)
Keywords:
CaCO3;  natural groundwater;  equilibrium aqueous model;  effects of mixing on the dissolution(precip- itation)
分类号:
P641
DOI:
-
文献标志码:
A
摘要:
以水溶液平衡化学模型为基础,使用实际地下水样的水质分析结果,对相对CaCO3处于未饱和、过饱和 状态地下水的混合进行了模拟计算,发现两种天然地下水的混合,不但可以发生混合溶蚀作用,而且还可发生混 合沉淀作用。混合溶蚀(沉淀)作用分为严格意义下的混合溶蚀(沉淀)类型和广义的混合溶蚀(沉淀)作用类型。 实际中两种地下水的混合是产生溶蚀还是沉淀作用,取决于端元混合水样的化学成分。
Abstract:
The methods of aqueous speciation calculation, pH calculation as well as the calculation of solubility (precipitability)of CaCO3in natural water were used to study the effects of mixing of groundwater on the dissolution (precipitation)of CaCO3. Mixing were made for three groups of natural groundwater, one is the mixing between unsaturated(with CaCO3)water, the second group is the mixing between supersaturated water, and the last group is the mixing of unsaturated water with supersaturated water. Results show that mixing of natural groundwater can not only lead to increase the dissolution of CaCO3, but also increase the precipitation of CaCO3according to the composition of the groundwater. Both the mixing dissolution and mixing precipitation can be classified into two kinds, that is an increased mixing dissolution(precipitation)in strict sense and an increased mixing dissolution(precipitation)in broad sense. Furthermore, mixing of two kinds of groundwater can also lead to increase the dissolution of CaCO3in certain mixing proportion and to increase the precipitation of CaCO3in other mixing proportion. In practice, which kind of mixing effects will happen is mainly determined by the composition of end-member mixing water.

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备注/Memo

备注/Memo:
收稿日期:2006-05-14 基金项目:国家自然科学基金项目(40372114) 作者简介:钱会(1963-),男,陕西泾阳人,教授,博士生导师,从事水资源与环境研究。E-mail:qianhui@chd.edu.Cn
更新日期/Last Update: 1900-01-01