湖北农业科学2025，Vol.64Issue(1)：44-48,5.DOI:10.14088/j.cnki.issn0439-8114.2025.01.008
不同骨料对典型径流污染物的吸附效果
Adsorption effect of different aggregates on typical runoff pollutants
摘要
Abstract
A comparative test of runoff pollutant removal was carried out for 4 different substrates.These 4 different substrates were coarse river sand(particle size of 1.00～2.00 mm),fine river sand(particle size of 0.15～0.60 mm),coarse quartz sand(particle size of 1.00～2.00 mm)and fine quartz sand(particle size of 0.50～1.00 mm).The conventional sandy loam(particle size of 0.02～0.20 mm)was used as the control.The results showed that when the initial concentration of total nitrogen was 20 mg/L,the four substrates had the highest removal rate of total nitrogen.When the initial concentration of total phosphorus was 40 mg/L,the removal rate of total phosphorus by the four substrates was the highest.With the increase of the initial concentration of pollutants,the removal rate of pollut-ants by the four substrates had a significant downward trend.In general,the removal rate of pollutants by coarse quartz sand and fine river sand was higher than that of the other two materials.In terms of adsorption capacity,except for fine river sand,the adsorption ca-pacity of the other three substrates to pollutants increased firstly and then tended to be stable with the increase of initial concentration of pollutants,while fine river sand showed good adsorption potential at high concentration.According to the analysis,the main reason was that river sand removed pollutants through physical adhesion,which was mainly affected by surface area,while quartz sand inter-cepted pollution through chemical adsorption,and the main control factor was porosity.Therefore,river sand with large specific sur-face area and quartz sand with large porosity had more obvious intercepting effect.关键词
透水铺装基层/骨料/径流污染物/去除率/吸附量Key words
permeable pavement base/aggregate/runoff pollutants/removal rate/adsorption capacity分类
资源环境引用本文复制引用
陈文高,张佳磊,许聪..不同骨料对典型径流污染物的吸附效果[J].湖北农业科学,2025,64(1):44-48,5.基金项目
国家水体污染控制与治理科技重大专项(2017ZX07101003-008) （2017ZX07101003-008）
