水土保持区土壤-水有机污染物迁移转化与污染程度研究  

Analysis of Soil Water Organic Pollutant Migration and Transformation and Pollution Degree in Soil and Water Conservation Areas

作　　者：芮茂刚 Rui Maogang(Yunnan Research Institute of Water Resources and Hydropower,Kunming 650228,China)

机构地区：[1]云南省水利水电科学研究院,云南昆明650228

出　　处：《环境科学与管理》2024年第8期124-128,共5页Environmental Science and Management

摘　　要：水土保持区因降水量多导致水土流失,污染物随之迁移至水中。为此提出分析土壤-水有机污染物迁移转化与污染程度的方法。通过采样点设置,采集各区域污染物样本,利用平衡吸附模型构建迁移转化模型,设定约束条件。应用地累积指数评估污染程度,设定评级标准。采用EEMMS模型分析污染程度,发现多环芳烃在迁移中部分转化为无害物质,部分则直接迁移或水解为较小化合物。污染物在土壤向水区迁移时,污染程度整体降低,但地势低处的不可动水区流动性差,降解率低,污染程度较高。需关注这些区域,采取防治措施,减少土壤污染物对水环境影响。Due to high precipitation,soil erosion occurs in soil and water conservation areas,causing pollutants to migrate into the water.A method is proposed to analyze the migration and transformation of soil water organic pollutants and the degree of pollution.By setting sampling points,collect pollutant samples from various regions,use equilibrium adsorption models to construct migration and transformation models,and set constraint conditions.Apply the cumulative index to evaluate the degree of pollution and set rating standards.Using the EEMMS model to analyze the degree of pollution,it was found that some polycyclic aromatic hydrocarbons were converted into harmless substances during migration,while others were directly migrated or hydrolyzed into smaller compounds.When pollutants migrate from soil to water areas,the overall degree of pollution decreases,but the mobility of immovable water areas in low terrain is poor,the degradation rate is low,and the degree of pollution is high.Attention should be paid to these areas,prevention and control measures should be taken to reduce the impact of soil pollutants on the water environment.

关 键 词：污染物迁移 转化规律 污染程度分析 分布特征 

分 类 号：X53[环境科学与工程—环境工程]