改良玻璃轻石对雨水径流污染物去除效果研究  

Research on the removal effect of pollutants in rainwater runoff by modified glass pumice

作　　者：韩梦梦 粟春青 罗炘武 宫彦章 HAN Mengmeng;SU Chunqing;LUO Xinwu;GONG Yanzhang(Shenzhen Wenke Garden Co.,Ltd.,Shenzhen 518026,China)

机构地区：[1]深圳文科园林股份有限公司,广东深圳518026

出　　处：《安徽大学学报（自然科学版）》2024年第2期82-91,共10页Journal of Anhui University(Natural Science Edition)

基　　金：深圳市科技计划项目(KCXFZ202002011006491)。

摘　　要：以沸石、蛭石、陶粒为基础填料,添加传统玻璃轻石和改良玻璃轻石,采用人工调配雨水,通过渗滤柱模拟生物滞留地在不同运行时间(5,10,20,30,40h)及不同出水口对径流雨水的净化作用,研究改良玻璃轻石作为海绵城市生物滞留地基质对径流雨水中污染物的去除效果.结果表明,添加改良玻璃轻石的渗滤柱对污染物的综合去除效果最优,对COD,NH_(4)^(+)-N,TN,TP的最高去除率分别达到86.84%,93.68%,92.71%,95.47%,COD含量符合《城镇污水处理厂污染物排放标准》(GB18918-2002)中一级A类标准,NH_(4)^(+)-N,TP,TN含量均符合《地表水环境质量标准》(GB3838-2002)Ⅲ类标准.在基础填料中添加改良玻璃轻石对4种污染物均具有较好的过滤吸附作用,有效改善了填料渗滤性,综合来看在运行10h时最终出水口4即基质层深65cm处达到最佳去除效果.Zeolite,vermiculite and ceramsite were used as basic filtration materials,adding traditional glass pumice and modified glass pumice.This study developed a system composed of artificial rainwater and infiltration column to simulate the purification effect of bioretention pool on rainwater runoff at different operation time(5,10,20,30,40 h)and different outlets,to study the pollutant removal effect in rainwater runoff of modified glass pumice as the substrate of sponge city bioretention pool.The results showed that the infiltration column with modified glass pumice had the best comprehensive pollutant removal effect,and the maximum removal rates of COD,NH_(4)^(+)-N,TN and TP were 86.84%,93.68%,92.71% and 95.47%respectively.The COD content met the Class A for Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB18918-2002),and the NH_(4)^(+)-N,TP and TN content all met the Class Ⅲ standard of Environmental Quality Standard for Surface Water(GB3838-2002).The addition of modified glass pumice to the basic filtration materials had a good filtration adsorption effect on the four pollutants,and effectively improves the permeability of filtration materials.In a comprehensive view,the best removal effect was achieved at the final outlet 4,i.e.at the depth of 65 cm of the substrate layer,when running for 10 h.

关 键 词：海绵城市 改良玻璃轻石 雨水径流 过滤吸附 污染物去除 

分 类 号：X52[环境科学与工程—环境工程] X703