| 引用本文: | 张德彬,刘国东,钟 瑞.孝新合气田区地下水铁锰污染分析及环境健康风险评价[J].灌溉排水学报,2018,37(1):70-77. |
| ZHANG Debin,LIU Guodong,ZHONG Rui.孝新合气田区地下水铁锰污染分析及环境健康风险评价[J].灌溉排水学报,2018,37(1):70-77. |
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| 摘要: |
| 【目的】研究孝新合气田区地下水铁锰污染成因及环境健康风险。【方法】在37个地下水水样和8个土壤样品分析基础上，利用地理信息系统（GIS）和数量统计分析工具（SPSS）对地下水中铁、锰离子质量浓度的影响因素进行研究，并采用单因子指数、加权综合水质指数和健康风险评价法对研究区农村分散式饮用水源进行环境健康风险评价。【结果】研究区主要特征污染物为总铁、锰和总氮，其重要来源是地下水铁锰离子，在还原环境下有机质和总氮的输入是造成该区地下水中铁、锰离子量较高的原因，而地下水总氮超标主要受到农田灌溉和施肥的氮污染影响；综合水质等级从优良水质到极差水质，极差水质样品数占27%，表现为同时受总铁、锰和总氮超标影响；铁、锰离子非致癌风险指数均小于1，为风险可接受水平，即对饮水居民健康不会产生致癌慢性毒害效应，但铁锰污染需给予充分重视。【结论】 为提高研究区农村饮用水安全，建议饮用之前应该进行预处理，并将铁锰作为重点控制污染物。 |
| 关键词: 铁、锰离子； 污染分析； 加权综合水质指数； 水质评价； 健康风险评价 |
| DOI：10.13522/j.cnki.ggps.2017.0134 |
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| Analysis of Iron and Manganese Pollution and Environmental Health Risk Assessment of Groundwater in Xiaoxinhe Gas Field |
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ZHANG Debin， LIU Guodong， ZHONG Rui
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a. College of Water Resource & Hydropower; b. State Key Laboratory of Hydraulic & Mountainous River Exploitation and Protection, Sichuan University, Chengdu 610065, China
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| Abstract: |
| 【Objective】 Study the groundwater pollution and environmental health risk of iron and manganese in Xiaoxinhe area. 【Method】 The influencing factors of iron and manganese ion concentration in groundwater were studied by using geographic information system (GIS) and quantitative statistical analysis tools (SPSS) based on the analysis of 37 groundwater samples and 8 soil samples. Comprehensive environmental health risk assessment of rural drinking water sources was evaluated using single factor index, weighted comprehensive water quality index and health risk assessment method. 【Result】 The results showed that the main pollutants were total iron and total manganese which came from the high ions concentration of iron and manganese in groundwater resulted from the input of organic matter and total nitrogen under reduced conditions. The other main pollutant was total nitrogen caused by irrigation and fertilization. The range of comprehensive water quality was from the excellent to the very poor. The very poor quality of water samples was 27% in which total iron, manganese and nitrogen concentrations exceeded the standard. The non-carcinogenic of risk indexes of iron and manganese were less than 1, which had no carcinogenic chronic toxic effect on resident health. However, iron and manganese pollution should be given our most careful attention. 【Conclusion】 Pretreatment should be carried out before drinking, and iron and manganese should be taken as the key control pollutants. |
| Key words: iron and manganese ions; pollution analysis; weighted comprehensive water quality index; water quality assessment ; health risk assessment |
