某石化基地地下水污染模拟研究  

Simulation study on groundwater pollution in a petrochemical base

作　　者：兰斐 赵洪辉 LAN Fei;ZHAO Honghui(China Petroleum Geotechnical Engineering Co.Ltd,Qingdao 266000,China)

机构地区：[1]青岛中油岩土工程有限公司,山东青岛266000

出　　处：《水科学与工程技术》2022年第3期8-12,共5页Water Sciences and Engineering Technology

摘　　要：以某石化基地为研究对象,基于现场水文地质条件,运用Visual MODFLOW建立了地下水流概念模型和数值模型及溶质运移数值模型,模拟了瞬时大量泄漏工况下石油类污染物的运移距离和污染晕的扩散情况,进而针对石油类对地下水可能造成的影响进行评价。研究结果表明:在模拟期内石油类污染物的渗漏对局部区域的浅层水造成污染,随着运移时间增加,超标范围越来越大,在1000d时,运移范围达到最大,随后污染物随着水流运移过程中,不断消散和稀释,污染物浓度不断降低,范围逐渐缩小,整个预测时段内,石油类污染物未运移到最近的保护目标处,项目运行期间,建议在含油污水池下游按照规范要求做好地下水污染的长期监测工作,一旦发生地下水污染事故,应立即启动应急预案,将损失控制在最低限度。This article takes a petrochemical base as the research object,based on the hydrogeological conditions of the site,uses Visual MODFLOW to establish a conceptual model of groundwater flow,a numerical model,and a numerical model of solute transport,and simulates the transport of petroleum pollutants under instantaneous large-scale leakage conditions.The distance shift and the spread of pollution halo,and then the possible impact of petroleum on groundwater was evaluated.The research results show that during the simulation period,the leakage of petroleum pollutants pollutes the shallow water in a local area.As the migration time increases,the exceeding range becomes larger and larger.At 1000d,the migration range reaches the maximum.Subsequently,the pollutants are continuously dissipated and diluted as the water flows,and the concentration of pollutants is continuously reduced,and the scope is gradually reduced.During the entire forecast period,petroleum pollutants have not been transferred to the nearest protection target.During the operation of the project,it is recommended Long-term monitoring of groundwater pollution should be done in the downstream of the oily sewage pond in accordance with the requirements of the specification.Once a groundwater pollution accident occurs,an emergency plan should be activated immediately to control the loss to a minimum.

关 键 词：地下水模拟 溶质运移 地下水污染 石油类污染物 地下水保护 

分 类 号：X523[环境科学与工程—环境工程]