适合北方地区生物滞留设施填料筛选与组合试验研究

Selection and Combination Experiments of Fillers for Biological Retention Facilities in North Areas

摘要: 本研究为确定适合北方地区的气候条件、土壤特性和降雨特征等条件的生物滞留设施填料，通过测定珍珠岩、沸石、陶粒、火山岩、活性炭和蛭石六种填料的渗透系数及对污染物的去除效果，筛选出适宜填料。并搭配沈阳本地土壤进行组合填料试验，选出最优组合为开展生物滞留设施试验提供技术参考。结果显示，单种填料试验中，珍珠岩、沸石和火山岩综合效果突出，可作为组合填料成分。组合填料试验中发现，当土壤、火山岩、沸石、珍珠岩四种填料的比例为4:1:2:3时，其组合填料的渗透系数和各组合填料对污染物的去除效果较好。选其做生物滞留设施的组合填料。

Abstract: The purpose of this article is to determine the permeability of biological detention facility tests that suit the climatic conditions, soil characteristics, and rainfall characteristics of northern regions. Through the determination of the permeabilities of the six fillers of perlite, zeolite, ceramsite, volcanic rock, activated carbon and vermiculite and the removal effect on pollutants, suitable fillers were selected. In combination with the local soil in Shenyang, a combined packing experiment was conducted to select the optimal combination, which provides a technical reference for conducting biological retention facility. The results show that perlite, zeolite and volcanic rock have outstanding comprehensive effects and can be used as composite filler components. The composite filler test finds that when the ratio of the four fillers of soil, volcanic rock, zeolite, and perlite is 4:1:2:3, the permeability coefficient of the combined filters and the combined fillers has a good removal effect on the pollutants. It was selected as a combination filler for biological retention facilities.