生物滞留系统中径流雨水磷的迁移转化规律
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摘要
基于生物滞留系统对雨水的处理效果,对其进行模拟径流雨水进水试验,通过连续提取法检测生物滞留系统土壤渗滤介质不同深度(0、5、15、35 cm)处交换态无机磷(Ex-P)、铝磷(Al-P)、铁磷(Fe-P)含量,并监测系统出水TP。结果表明,土壤渗滤介质对Ex-P、Al-P、Fe-P的吸附是从上至下逐层进行、逐层减弱的,Ex-P转化为Al-P、Fe-P,同时Al-P转化为Fe-P,因此Ex-P含量逐层减少,而Al-P、Fe-P逐层累积。系统对径流雨水中TP的去除率在90%以上,其中未被植物利用的TP体现为水-土壤-根系-生物系统内磷的动态平衡。
Based on effects of a bio-retention system on rainwater,a simulation test on rainwater runoff was carried out.With the sequential extraction method,contents of exchangeable inorganic phosphorus( Ex-P),aluminum phosphate( AlP) and iron phosphorus( Fe-P) in the filtration medium or soil of the bioretention system at different depth( 0,5,15 and35 cm) were determined and TP in the effluent of bio-retention system was also monitored. Results show that the adsorption of Ex-P,Al-P and Fe-P by the soil medium decreased with the depth,layer by layer from the top to the bottom. During the process of adsorption,Ex-P gradually transformed into Al-P and Fe-P,while,Al-P did into Fe-P. As a result,ExP decreased in concentration while Al-P and Fe-P increased with the depth. About 90% of the TP in the runoff rainwater was intercepted and removed by the system. The phosphorus,not absorbed by plants,remained in the system,being a part of the dynamic TP balance of the water-soil-root-biome system.
Based on effects of a bio-retention system on rainwater,a simulation test on rainwater runoff was carried out.With the sequential extraction method,contents of exchangeable inorganic phosphorus( Ex-P),aluminum phosphate( AlP) and iron phosphorus( Fe-P) in the filtration medium or soil of the bioretention system at different depth( 0,5,15 and35 cm) were determined and TP in the effluent of bio-retention system was also monitored. Results show that the adsorption of Ex-P,Al-P and Fe-P by the soil medium decreased with the depth,layer by layer from the top to the bottom. During the process of adsorption,Ex-P gradually transformed into Al-P and Fe-P,while,Al-P did into Fe-P. As a result,ExP decreased in concentration while Al-P and Fe-P increased with the depth. About 90% of the TP in the runoff rainwater was intercepted and removed by the system. The phosphorus,not absorbed by plants,remained in the system,being a part of the dynamic TP balance of the water-soil-root-biome system.
引文
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[24]BORGARD O K,JORGENSEN S S,MOBERG J P,et al.Influence of Organic Matter on Phosphate Adsorption by Aluminum and Iron Oxides in Sandy Soils[J].Journal of Soil Science,1990,41:443-449.
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[26]冯萃敏,米楠,王晓彤,等.基于雨型的南方城市道路雨水径流污染物分析[J].生态环境学报,2015,24(3):418-426.
[27]刘峰,高云芳,王立欣,等.水域沉积物氮磷赋存形态和分布的研究进展[J].水生态杂志,2011,32(4):137-144.
[28]孙桂芳,金继运,石元亮.土壤磷素形态及其生物有效性研究进展[J].中国土壤与肥料,2011(2):1-9.
[29]李北罡,郭博书.黄河中游表层沉积物中无机磷的化学形态研究[J].农业环境科学学报,2006,25(6):1607-1610.
[30]刘素美,张经.沉积物中磷的化学提取分析方法[J].海洋科学,2001,25(1):22-25.
[31]杨利宁,敖特根·白银,李秋凤,等.苜蓿根系分泌物对土壤中难溶性磷的影响[J].草业科学,2015,32(8):1216-1221.
[2]芦晓峰,孙毅,李波,等.城市化进程中雨水资源利用研究[J].水土保持研究,2011,18(3):267-271.
[3]YOHANNES Z N,MAGDALENA U,SEBASTIAN S.Efficiency Analysis of Two Sequential Biofiltration Systems in Poland and Ethiopia:The Pilot Study[J].Eco-Hydrology Hydrobiology,2012,12(4):271-285.
[4]KANG J H,KAYHANIAN M,STENSTROM M K.Implications of a Kinematic Wave Model for First Flush Treatment Design[J].Water Research,2006,20(20):3820-3830.
[5]KIM H,PAUS J,MORGAN J S.Effects of Bioretention Media Compost Volume Fraction on Toxic Metals Removal,Hydraulic Conductivity,and Phosphorous Release[J].International Journal of Environmental Engineering and Management,2004,140(10):1-8.
[6]袁宏林,魏颖,谢纯德.土壤对城市雨水径流中污染物的削减作用[J].水土保持通报,2015,35(3):112-116.
[7]张千千,李向全,王效科,等.城市路面降雨径流污染特征及源解析的研究进展[J].生态环境学报,2014,23(2):352-358.
[8]何卫华,车伍,杨正,等.生物滞留技术在道路雨洪控制利用中的应用研究[J].给水排水,2012,38(增刊2):132-135.
[9]DAVIS A P,HUNT W F,TRAVER R G,et al.Bioretention Technology:Overview of Current Practice and Future Needs[J].Journal of Environmental Engineering,2009,135(3):109-117.
[10]LE COUSTUMER S,FLETCHER T D,De ELETIC A,et al.Hydraulic Performance of Biofilters for Stormwater Management:First Lessons From Both Laboratory and Field Studies[J].Water Science and Technology,2007,56(10):93-100.
[11]HATT B E,FLETCHER T D,DELETIC A.Hydrologic and Pollutant Removal Performance of Stormwater Biofiltration Systems at the Field Scale[J].Journal of Hydrology,2009,365(3):310-321.
[12]张翔凌,DELETIC A.雨水生物过滤处理技术在澳大利亚的研究与应用[J].武汉理工大学学报,2011,33(11):116-119.
[13]孟莹莹,陈建刚,张书函.生物滞留技术研究现状及应用的重要问题[J].中国给水排水,2010,26(24):20-24.
[14]刘芳,侯立柱.土壤渗滤介质系统去除雨水径流污染物[J].环境工程学报,2012,6(12):4294-4298.
[15]郑爱榕,沈海维,李文权.沉积物中磷的存在形态及其生物可利用性研究[J].海洋学报,2004,26(4):49-57.
[16]郑刘根,刘响响,程桦,等,非稳沉采煤沉陷区沉积物-水体界面的氮、磷分布及迁移转化特征[J].湖泊科学,2016,28(1):86-93.
[17]陈永川,汤利.沉积物-水体界面氮磷的迁移转化规律研究进展[J].云南农业大学学报,2005,20(4):527-533.
[18]周志强,王晓昌,郑于聪,等.复合人工湿地对高污染性河流营养物的去除[J].环境工程学报,2013,7(11):4161-4166.
[19]李屹,沈剑,林燕,等.土壤渗滤系统中污染物去除效果分析[J].生态与农村环境学报,2013,29(6):738-742.
[20]颜奕华,李金星,郑子成,等.磷和硅对土壤-烟草系统中铅迁移的影响[J].生态与农村环境学报,2014,30(5):640-645.
[21]李海燕,罗艳红,马玲.生物滞留设施对地表径流中磷去除效果的研究述评[J].中国水土保持,2014(6):26-32.
[22]李平,王晟.生物滞留技术控制城市面源污染的作用与机理[J].环境工程,2014(3):75-79.
[23]向衡,韩芸,刘琳,等.低浓度含磷水体除磷填料的选择研究[J].环境科学学报,2013,33(12):3227-3233.
[24]BORGARD O K,JORGENSEN S S,MOBERG J P,et al.Influence of Organic Matter on Phosphate Adsorption by Aluminum and Iron Oxides in Sandy Soils[J].Journal of Soil Science,1990,41:443-449.
[25]熊俊芬,石孝均,毛知耘.定位施磷对土壤无机磷形态土层分布的影响[J].西南农业大学学报,2000,22(4):123-125.
[26]冯萃敏,米楠,王晓彤,等.基于雨型的南方城市道路雨水径流污染物分析[J].生态环境学报,2015,24(3):418-426.
[27]刘峰,高云芳,王立欣,等.水域沉积物氮磷赋存形态和分布的研究进展[J].水生态杂志,2011,32(4):137-144.
[28]孙桂芳,金继运,石元亮.土壤磷素形态及其生物有效性研究进展[J].中国土壤与肥料,2011(2):1-9.
[29]李北罡,郭博书.黄河中游表层沉积物中无机磷的化学形态研究[J].农业环境科学学报,2006,25(6):1607-1610.
[30]刘素美,张经.沉积物中磷的化学提取分析方法[J].海洋科学,2001,25(1):22-25.
[31]杨利宁,敖特根·白银,李秋凤,等.苜蓿根系分泌物对土壤中难溶性磷的影响[J].草业科学,2015,32(8):1216-1221.