| 大庆齐家水源地水文地球化学环境的模拟 |
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| 引用本文：张建立,潘懋,贾国东,钟佐燊,汤鸣皋.2003.大庆齐家水源地水文地球化学环境的模拟[J].地球学报,24(3):267-272. |
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| 基金项目:黑龙江省计划局重点项目(1996-60-03) |
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| 中文摘要:大庆齐家水源地抽取地下水过程中，地下水中CO2和H2S气体大量逸出，造成就地实测的Eh和pH等值不能代表含水层中地下水的真实情况。本文提出用化学热力学模拟恢复水文地球化学环境的方法，在分析齐家水源地实际情况的基础上，界定了齐家水源地的水文地球化学环境指标：pH值、Eh值、游离CO2和H2S，pH值为6．56以下；Eh值为—121-—145mV之间；游离CO2为300mg/L以上；H2S(aq)大于64μg/L；HS^-大于17μg/L。指出大庆齐家水源地为偏酸性、弱还原、高游离CO2，且含H2S的水文地球化学环境；为地下除铁提供了水文地球化学环境依据。 |
| 中文关键词:化学热力学模拟 CO2 H2S |
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| Modeling of Hydrogeochemical Environment in the Qijia Water Resource Base Area, Daqing |
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| Abstract:CO 2 and H 2S escape in large quantities during the pumping of groundwater in the Qijia water resource base area of Daqing, and hence E h and pH values measured near the well fail to reflect the real environment of groundwater. This paper presents a method for restoring hydrogeochemical environment by means of chemical and thermodynamic modeling. Environmental indices (pH,E h,CO 2 and H 2S) are qualified. pH values are lower than 6.56,E h values are between -121 mV and -145 mV,CO 2 values are higher than 300 mg/L, H 2S(aq) values are higher than 64 μg/L, and HS- values are higher than 17 μg/L. So water in the Qijia water resource base area of Daqing is weakly acid and weakly reductive with high CO 2 and certain amounts of H 2S. The method also provides guidance for disposal of underground Fe. |
| keywords:chemical and thermodynamic modeling CO2 H2S |
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