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  • 熊家晴,何一帆,白雪琛,王晓昌.改良填料生物滞留池对雨水径流中磷的去除效果[J].环境工程学报,2019,13(9):2164-2172.DOI:10.12030/j.cjee.201812178    [点击复制]
  • XIONG Jiaqing,HE Yifan,BAI Xuechen,WANG Xiaochang.Removal effect of phosphorus in rain-runoff by the media-improved bioretention tank[J].,2019,13(9):2164-2172.DOI:10.12030/j.cjee.201812178   [点击复制]
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改良填料生物滞留池对雨水径流中磷的去除效果
熊家晴1,2, 何一帆1,2, 白雪琛3, 王晓昌1,2
0
(1. 西安建筑科技大学环境与市政工程学院,西安 710043;2. 西北水资源与环境生态教育部重点实验室,西安 710043;3. 中联西北工程设计研究院有限公司,西安 710077)
摘要:
针对生物滞留池在一定淹没区高度条件下同时添加碳源对P的去除效果波动较大问题,开展了生物滞留池填料改良方法的研究。通过构建3根模拟实验柱,分别填充传统填料、普通生物炭改良填料和铁改性生物炭改良填料,分析了不同生物炭改良填料生物滞留池在不同淹没区高度和不同落干期条件下对PO43--P的去除效果;同时,探讨了生物炭对生物滞留池填料的改良作用。研究结果表明:在淹没区高度为300 mm的条件下,铁改性生物炭改良填料生物滞留池对于PO43--P去除效果最好,平均去除率接近90%,而普通生物炭改良填料生物滞留池对PO43--P去除效果最差,平均去除率低于60%;同时,在不同落干期条件下,所有实验柱均未发生PO43--P淋出现象。铁改性生物炭改良填料生物滞留池在设有一定高度淹没区条件下对雨水径流中磷具有很好的去除效果,并对不同落干期变化具有较强的适应性。
关键词:  径流污染  生物滞留池  生物炭  改良填料  磷的去除
DOI:10.12030/j.cjee.201812178
投稿时间:2018-12-27
基金项目:国家水体污染控制与治理科技重大专项(2012ZX07308-001-08);陕西重点科技创新研究团队计划(2018KWT-11);陕西省海绵城市研究创新团队计划(2017KCT-19-02)
Removal effect of phosphorus in rain-runoff by the media-improved bioretention tank
XIONG Jiaqing1,2, HE Yifan1,2, BAI Xuechen3, WANG Xiaochang1,2
(1. School of Environmental and Municipal Engineering, Xi' an University of Architecture and Technology, Xi'an 710043, China;2. Northwest China Key Laboratory of Water Resource and Environment Ecology, Xi'an 710043, China;3. China United Northwest institute for Engineering Design & Research Co. Ltd., Xi'an 710077, China)
Abstract:
Aiming at the problem that phosphorus (P) removal effect fluctuates greatly with the addition of carbon source at a certain height of submerged zone in a bioretention tank, the improvement method of its media was investigated. In this study, three simulated experimental columns were constructed and filled with conventional media, general biochar-improved media, and iron-coated biochar-improved media, respectively. The PO43--P removal effects of the bioretention cells with different biochar-improved media at different submerged heights and drying periods were analyzed, and the improvement effect of biochar on media was evaluated. The results showed that the iron-coated biochar-improved media presented the best PO43- removal effect at the submerged height of 300 mm in the bioretention tank, and the corresponding average removal efficiency approached 90%. However, the general biochar-improved media presented the lowest PO43- removal effect with average removal rate below 60%. At the same time, under different drying periods, PO43- leaching from media did not occur in all the experimental columns. In conclusion, the bioretention tank filled with the iron-coated biochar-improved media had a good performance on phosphorus removal from rain runoff and a strong adaptability to different drying periods when a submerged zone with certain height was preset.
Key words:  runoff pollution  bioretention tank  biochar  improved media  phosphorus removal