环境工程学报2025，Vol.19Issue(10)：2445-2453,9.DOI:10.12030/j.cjee.202502021
钼尾矿基质生物滞留设施雨水径流量质调控
Stormwater quantity and quality regulation by bioretention systems with molybdenum tailings-based substrate
摘要
Abstract
To evaluate the feasibility of using molybdenum tailings as modified substrate in bioretention facilities,this study systematically analyzed the physicochemical properties,heavy metal leaching toxicity,and stormwater runoff purification performance of the tailings-based substrate.Results demonstrate that the molybdenum tailings substrate exhibits a permeability rate of 1.33 mm·min-1,with particle size distribution comparable to conventional engineering sand.The leaching concentrations of all detected heavy metals were below the regulatory limits specified in China's Hazardous Waste Identification Standard(GB 5085.3-2007).Adsorption processes of PO43-and NH4+by the substrate followed pseudo-second-order kinetics and Langmuir isotherm models.The bioretention system with molybdenum tailings achieved 51.89％～70.56％volume reduction of secondary runoff,with average removal efficiencies of 97.20％for TP,82.92％for COD,90.84％for NH4+-N,and 56.73％for NO3--N.Plant root systems were observed to enhance facility stability through substrate restructuring effects.关键词
生物滞留设施/钼尾矿基质/雨水径流/量质调控Key words
bioretention facility/molybdenum tailings substrate/stormwater runoff/quantity-quality control分类
资源环境引用本文复制引用
张炜,陈晓晴,杨婉秋,李凯旋,宋立乾,张文强,李思敏..钼尾矿基质生物滞留设施雨水径流量质调控[J].环境工程学报,2025,19(10):2445-2453,9.基金项目
国家重点研发计划课题资助项目(2021YFC1910601) （2021YFC1910601）
