岩溶地下河系统污染采用源头治理的原因探讨——以黔中某磷石膏堆场所处地下河系统为例  

The causes of pollution source control in Karst underground river system——Taking the underground river system of a phosphogypsum pile site in central Guizhou as an example

作　　者：赵翠 覃红亮 罗林 李中华 Zhao Cui;Qin Hongliang;Luo Lin;Li Zhonghua(111 Geological Party,Guizhou Bureau of Geology and Mineral Exploration&Development,Guiyang 550081;Guizhou Geological Survey,Guiyang 550081;Guizhou Geological Engineering Investigation Design and Research Institute,Guiyang 550081)

机构地区：[1]贵州省地质矿产勘查开发局111地质大队,贵阳550081 [2]贵州省地质调查院,贵阳550081 [3]贵州地质工程勘察设计研究院有限公司,贵阳550081

出　　处：《环保科技》2024年第6期20-23,29,共5页Environmental Protection and Technology

基　　金：贵州省水文地质志修编(MCHC-ZG20212206-1);贵州省地质勘查基金项目(GZMC-ZG20192015-1)。

摘　　要：为探讨岩溶地下河系统污染宜采用源头治理的原因,本文以黔中某磷石膏堆场所处地下河系统为研究对象,选取总磷为特征污染物,通过分析污染物来源及污染途径,并对该地下河系统地下水的环境承载力进行分析,总结出该地下河系统污染采用源头治理的原因。研究结果表明,该地下河系统总磷污染主要来源于降水淋浸堆场磷石膏、地下水淋浸地下岩溶空间的磷石膏体及堆积体的孔隙水;受污染的地下水以管道流形式总体自南向北径流,最终于S1号地下河出口排泄;该地下河系统地下水的自净能力弱,环境承载力小,被污染后治理难度大。因此,大幅降低乌江S1地下河出口总磷浓度需要从渗漏源头着手,减少污染物渗漏量。该研究表明在岩溶地下河系统防治地下水污染采用源头治理具有科学性。This paper takes the underground river system at a phosphogypsum pile site in central Guizhou as the research object,selects total phosphorus as the characteristic pollutant,and analyzes the source of pollution and the way of pollution.The environmental carrying capacity of groundwater in the underground river system is analyzed,and the reasons for the pollution of the underground river system are summarized.The results show that the total phosphorus pollution of the underground river system mainly comes from precipitation leaching of phosphogypsum in the landfill,groundwater leaching of phosphogypsum in the underground karst space and pore water in the landfill.The contaminated groundwater flows from south to north in the form of pipeline flow,and finally discharges at the outlet of S1 underground river.The self-purification ability of groundwater in the underground river system is weak,the environmental carrying capacity is small,and it is difficult to treated the contaminated groundwater.Substantial reduction of total phosphorus concentrations at the outlet of the underground river S1 of the Wujiang River requires a reduction of pollutant leakage from the source.This study shows that it is reasonable to control groundwater pollution by source control in Karst underground river system.

关 键 词：地下河系统 污染物来源 污染途径 环境承载力 源头治理 

分 类 号：X523[环境科学与工程—环境工程]