某气田水回注项目地下水环境影响评价

Groundwater Environmental Impact Assessment of a Gas Water Reinjection Project

天然气在生产过程中会产生一定量的气田水,可通过对气田水进行回注来解决其环境污染。开展对某气田水回注项目的地下水环境影响进行预测,在确定评价等级和标准、预测因子及分析各污染源强的基础上,采用解析法计算石油类、Cl-、Pb、Cr、CODMn等污染物的扩散迁移范围,结果表明:项目建设对当地地下水环境影响程度可接受,可为后续类似的地下水环境影响评价提供相关参考依据。

A certain amount of gas field water will be produced in the process of natural gas production, and its environmental pollution can be solved by reinjecting gas field water. The paper predicts the groundwater environmental impact of a gas field water reinjection project. Based on determining the evaluation grades and standards, predicting factors and analyzing the intensity of each pollution source, the analytical method is used to calculate the diffusion and migration range of petroleum, Cl^-, Pb, Cr, CODMn and other pollutants, The results show that the degree of impact of the project construction on the local groundwater environment is acceptable, which can provide relevant reference basis for subsequent similar groundwater environmental impact assessment.