酚氰废水污染物在包气带中的迁移预测  

Prediction of the migration of phenol-cyanide wastewater contaminants in the air pocket

作　　者：李贵仁 LI Gui-ren(North China Engineering Investigation Institute CO.LTD,Shijiazhuang,050021,Hebei;Technical Innovation Center for Underground Water Disaster Prevention Engineering in Metal Mines,Ministry of Natural Resources,Shijiazhuang,050021,Hebei;Technological Innovation Center for Mine Groundwater Safety of Hebei Province,Shijiazhuang,050021,Hebei)

机构地区：[1]华北有色工程勘察院有限公司,河北石家庄050021 [2]自然资源部金属矿山地下水灾害防治工程技术创新中心,河北石家庄050021 [3]河北省矿山地下水安全技术创新中心,河北石家庄050021

出　　处：《地下水》2024年第3期57-60,共4页Ground water

摘　　要：以某地区焦化项目为研究对象,根据工程分析结果,利用HYDRUS-1D软件构建该项目酚氰废水处理站调节池渗漏液中典型的污染物耗氧量、氨氮、氰化物、石油类、挥发酚、苯并芘、硫化物在包气带中的运移模型,模拟预测各污染因子在包气带中的垂直迁移,计算出通过包气带到达地下水面的时间和浓度值,了解污染物在包气带中的运移规律。结果表明:污染物排放后会沿垂直方向开始依次下渗到达各观测点,且在各观测点浓度先升后降,随着深度的增加,浓度逐渐减小。在模拟时间(20 a)内,污染物各因子经由包气带到达下部灰岩地层时,其浓度均远低于背景值,大部分因子低于检出限。预测结果为下一步污染物在含水层中迁移模拟、确定包气带污染防治措施提供依据。Taking a regional coking project as the research object,according to the results of engineering analysis,HYDRUS-1D software was used to construct the transport model of typical pollutants oxygen consumption,ammonia nitrogen,cyanide,petroleum,volatile phenol,benzopyrene and sulphide in the leachate of the regulating pool of phenol-cyanide wastewater treatment station of the project in the envelope,simulate the prediction of the vertical migration of each pollutant factor in the envelope,and calculate the time and concentration value of the pollutants arriving at the surface of groundwater through the envelope to understand the transport law of pollutants.Calculate the time and concentration values of the pollutants reaching the groundwater surface through the air pocket to understand the transport pattern of the pollutants in the air pocket.The results show:Pollutants discharged will start to infiltrate along the vertical direction to reach each observation point in turn,and the concentration at each observation point first rises and then falls,and as the depth increases,the concentration gradually decreases.During the modelling time(20 years),the concentrations of each of the pollutant factors were well below the background values when they reached the lower greywacke strata via the air inclusion zone,and most of the factors were below the detection limits.The prediction results provide a basis for the next step in modelling the migration of pollutants in aquifers and determining pollution control measures in the air-packed zone.

关 键 词：酚氰废水 包气带 迁移 HYDRUS-1D 地下水溶质运移 

分 类 号：P641.131[天文地球—地质矿产勘探] X523[天文地球—地质学]