多层横流渗滤床对西安浑浊景观水体的除浊效果  

Effect of a multi-layer cross flow infiltration bed on the treatment of turbidity from turbid landscape waters in Xi′an

作　　者：任勇翔[1,2] 黄凯迪 高卫荣 杨垒 刘洋[1,2] 张琼华 王晓昌[1,2] REN Yongxiang;HUANG Kaidi;GAO Weirong;YANG Lei;LIU Yang;ZHANG Qionghua;WANG Xiaochang(National Exemplary Center of Laboratory Education on Environmental Science and Engineering,Xi′an Univ.of Arch.&Tech.,Xi′an 710055,China;Key Laboratory of Environmental Engineering of Shaanxi Province,Xi′an 710055,China;Gansu Xin He Engineering Design Co.,LTD,Qingyang 745000,China)

机构地区：[1]西安建筑科技大学国家级环境类专业教学实验示范中心,陕西西安710055 [2]陕西省环境工程重点实验室,陕西西安710055 [3]甘肃信合工程设计有限公司,甘肃庆阳745000

出　　处：《西安建筑科技大学学报（自然科学版）》2018年第4期582-587,共6页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家"水体污染控制与治理"科技重大专项(2014ZX0731-5002)

摘　　要：水的浊度严重影响了城市水体的景观效果,为高效大量去除浑浊景观水中的浊度物质,通过竖向分层和多点进水,开发了一种新型横流渗滤床,在表面负荷相同时显著增加了相同表面积渗滤床的产水量.处理水量大幅增加后渗滤床依然可以高效除浊,三组滤料粒径(10~30、5~10、2~5mm)渗滤床在表层水力负荷为0.5m3/(m2·d)时,对浑浊景观水中浊度去除效率分别达到85.09%、95.34%、97.41%.考虑渗滤床运行稳定性及浊度去除效果,建议在实际工程应用中采用5~10mm粒径碎石作为渗滤床的主要填料组成.渗滤床竖向分层与多点进水的运行方式有效分担了滤床常见的表层易堵塞的风险,延长了渗滤床的使用周期.The turbidity seriously affected the landscape effect of the urban water-body.A new infiltration bed was developed to effectively treat turbid landscape water.Through vertical stratification and multipoint inflow,the water production could be increased significantly by the same surface area of infiltration bed under the same surface loading.Although the water production increased dramatically,infiltration bed still had a high efficiency in turbidity removal.When the surface hydraulic loading rate was 0.5 m 3/(m 2·d),the infiltration bed with different sizes of particle(10~30,5~10 and 2~5 mm)on the turbidity removal efficiency were 85.09%,95.34%and 97.41%,respectively.Considering the characteristics of porosity change and turbidity removal,it was suggested that 5-10 mm diameter of gravel should be as the main filler in the practical work.The operation mode of vertical stratification and multipoint inflow could effectively share the blocking risk of the surface layer like that occurred in common filter,and prolong the operation duration of infiltration bed.

关 键 词：浑浊景观水体 多层横流渗滤床 产水量 浊度 滤床堵塞 

分 类 号：TU992.3[建筑科学—市政工程]