摘要
选用装配式选配截污型雨水口,以土工布、不锈钢筛网和5种不同填料作为过滤模块,配置人工模拟雨水用于试验,研究其在不同截污装置下对初期雨水中悬浮物(SS)、化学需氧量(COD)、氨氮(NH_(4)^(+)-N)、总氮(TN)和总磷(TP)等污染物的去除效果,测试其对初期雨水径流污染的削减能力,并综合评价其在实际工程运用中的可行性与经济性。结果表明:在土工布、不锈钢筛网过滤模块中,土工布对SS有较好的去除效果,不锈钢筛网则需将孔径降至0.074 mm时才对SS有较明显的去除效果,但二者对COD、NH_(4)^(+)-N、TN和TP的去除效果均较差;以高炉灰焦粒、活化沸石、椰壳生物炭、陶粒、活性炭作为滤料的5种过滤模块均能有效提高初期雨水中COD、NH_(4)^(+)-N、TN和TP的去除效果;其中陶粒在达到理想的脱氮除磷效果的同时,也可实现较好的SS和COD去除效果,使用年限与其他过滤模块相差不大,且售价(5~13元/kg)略低于其他过滤模块。
An assembly-type optional sewage-interception rainwater inlet was proposed,with geotextile,stainless steel screen and five different fillers as the filter modules,and the artificial simulated rainwater was equipped for the test to study its removal effect on the pollutants of suspended solids(SS),chemical oxygen demand(COD),ammonia nitrogen(NH_(4)^(+)-N),total nitrogen(TN)and total phosphorus(TP),in the initial rainwater under different sewage intercepting devices.Its ability to reduce the initial runoff pollution was tested and the feasibility and economy in practical engineering applications were evaluated.The test results showed that:in the geotextile and stainless steel screen filter modules,geotextile had a good removal effect on SS,while the stainless steel screen had an obvious removal effect on SS when the aperture was decreased to 0.074 mm,but the two filter modules had poor removal effect on COD,NH_(4)^(+)-N,TN and TP.The five filtration modules with high furnace ash coke particles,activated zeolite,coconut shell biochar,ceramsite and activated carbon as filter materials,could effectively improve the removal effects of COD,NH_(4)^(+)-N,TN and TP in the initial rainwater.Among them,ceramsite could not only achieve the ideal removal effect of nitrogen and phosphorus,but also achieve good removal effect on SS and COD.Its service life was comparable with other filtration modules,and the market unit price(5-13 yuan/kg)was slightly lower than other filtration modules.
作者
廖晓数
吴志权
朱成煜
林冰
苏君豪
张倩
仇玥
LIAO Xiaoshu;WU Zhiquan;ZHU Chengyu;LIN Bing;SU Junhao;ZHANG Qian;QIU Yue(Wuhan Hanyang Municipal Construction Group Co.,Ltd.;School of Civil Engineering and Architecture,Wuhan University of Technology)
出处
《环境工程技术学报》
CSCD
北大核心
2022年第4期1170-1176,共7页
Journal of Environmental Engineering Technology
基金
海绵城市建设水系统科学湖北省重点实验室开放研究基金项目(2019-06)。
关键词
陶粒
雨水口
过滤模块
污染物
ceramsite
inlet for rainwater
the filter module
pollutant
作者简介
廖晓数(1981—),男,高级工程师,主要研究方向为污染水体修复与海绵城市工程设计,66159062@qq.com;通信作者:仇玥(1993—),女,初级工程师,硕士,主要研究方向为污染水体修复与海绵城市工程设计,33716290@qq.com。
