To solve the internal pollution,sediment and overlying water from xiaocao River were analyzed.Xiaocao River is the stream segment of Fuyang River through Hengshui City.The release of nitrate nitrogen is studied by static simulation in the laboratory.The diffusion flux of nitrate nitrogen on the interface of sediment-water is calculated.The results show that the content of carbon,nitrogen and phosphorus gradually decrease with the increase of the sampling depth.The dissolved oxygen is very lower,which indicates the overlying water is in an anoxic condition.The organic pollution is serious.The nutrient concentrations are close to or even more than the limits of Ⅴ class surface water environmental quality standard.The river has high nutritional risk.Under different temperatures,the release of nitrate nitrogen in the surface sediments rises first and then falls,and the lower the temperature,the more serious the release.At the temperature of 5 ℃,the release of nitrate nitrogen in different depths of sediments increases first and then becomes- DOI:10.3969/j.issn.1000-1565.2016.03.009滏阳河衡水市区段沉积物硝酸盐氮的扩散规律边蔚,田在锋,李楠,魏全伟,徐元强(河北省环境科学研究院 水环境科学研究所,河北 石家庄 050037)摘 要:为解决内源负荷污染问题,对滏阳河衡水市区主城区小漕河沉积物和上覆水的性质进行了分析测试,采用实验室静态模拟法研究了硝酸盐氮的释放规律,并计算了其沉积物-水界面的扩散通量.结果表明:垂向沉积物中C、N、P营养盐随着深度的增加,含量逐渐降低.上覆水呈缺氧状态,有机污染严重,营养盐浓度接近甚至超过地表水环境质量标准Ⅴ类限值,富营养化风险高.不同温度下,表层沉积物硝酸盐的释放先上升再下降,且温度越低,越有利于其释放.温度为5 ℃时,不同深度沉积物硝酸盐的释放先增加后平缓再逐渐下降,且随着深度的增加,释放强度逐渐减弱.硝酸盐氮释放通量为-0.49 mg/(m2·d),总体表现为由上覆水向沉积物扩散.研究结果为滏阳河衡水市区段环境综合整治工程以及子牙河流域水污染防治与水质改善提供数据支持.关键词:滏阳河;沉积物;上覆水;内源污染;硝酸盐氮;扩散规律中图分类号:X522 文献标志码:A 文章编号:1000-1565(2016)03-0269-09Diffusion of nitrate nitrogen in sediment of stream segmentof Fuyang River through Hengshui CityBIAN Wei,TIAN Zaifeng,LI Nan,WEI Quanwei,XU Yuanqiang(Institute of Water Environmental Sciences,Hebei Provincial Academy of Environmental Sciences,Shijiazhuang 050037,China)Abstract:To solve the internal pollution,sediment and overlying water from xiaocao River were analyzed.Xiaocao River is the stream segment of Fuyang River through Hengshui City.The release of nitrate nitrogen is studied by static simulation in the laboratory.The diffusion flux of nitrate nitrogen on the interface of sediment-water is calculated.The results show that the content of carbon,nitrogen and phosphorus gradually decrease with the increase of the sampling depth.The dissolved oxygen is very lower,which indicates the overlying water is in an anoxic condition.The organic pollution is serious.The nutrient concentrations are close to or even more than the limits of Ⅴ class surface water environmental quality standard.The river has high nutritional risk.Under different temperatures,the release of nitrate nitrogen in the surface sediments rises first and then falls,and the lower the temperature,the more serious the release.At the temperature of 5 ℃,the release of nitrate nitrogen in different depths of sediments increases first and then becomes- 收稿日期:2015-08-25 基金项目:国家水体污染控制与治理科技重大专项(2012ZX07209-003) 第一作者:边蔚(1983-),女,河北石家庄人,河北省环境科学研究院工程师,博士,主要从事水环境保护方面的研究.E-mail:bianbianweiwei@126.com 通信作者:田在锋(1971-),男,河北邢台人,河北省环境科学研究院高级工程师,主要从事环境保护方面的研究.E-mail:tianzaifeng@sina.com第3期边 蔚等:滏阳河衡水市区段沉积物硝酸盐氮的扩散规律stable and eventually gradually decrease,and when the depth is deeper,the release intensity is weaker.The amount of the NO3--N diffusion flux is -0.49 mg/(m2·d),and its releasing trend is from the overlying water to the sediment.The results provide data support to the environmental comprehensive renovation project of stream segment of Fuyang River through Hengshui City and to the water pollution control and water quality improvement of Ziya River basin.
[1] 雷晓玲,丁娟,雷雨.疏浚过程中的环境影响分析及其对策研究[J].环境工程,2015,22(2):140-142.DOI:10.13205/j.hjgc.201502031. LEI Xiaoling,DING Juan,LEI Yu.Environmental influence analysis in the process of dredging and its countermeasure research [J].Environmental Engineering,2015,22(2):140-142.DOI:10.13205/j.hjgc.201502031.
[2] 李向梅,解岳,黄廷林.景观水体底泥释放分析[J].水处理技术,2010,36(1):60-63. LI Xiangmei,XIE Yue,HUANG Tinglin.Analysis on sediment release of landscape water[J].Technology of Water Treatment,2010,36(1):60-63.
[3] 徐佚群,熊慧欣,赵秀兰.底泥磷的吸附与释放研究进展[J].重庆环境科学,2003,25(11):147-149.DOI:10.3969/j.issn.1674-2842.2003.11.053.
[4] 张帅.微山湖主要入湖河流氮污染特征及内源氮释放控制技术[D].济南:山东建筑大学,2010.DOI:10.7666/d.y1708668. ZHANG Shuai.Study on the characteristics of the nitrogen pollution in the main rivers inflowing into Weishan Lake and the nitrogen release control technology of sediments[D].Ji’nan:Shandong Jianzhu University,2010.DOI:10.7666/d.y1708668.
[5] REDDY K R,FISHER M M,IVANOFF D.Resuspension and diffusive flux of nitrogen and phosphorous in a hypereutrophic lake [J].Journal of Environmental Quality,2004,25(1):363-371.DOI:10.2134/jeq1996.00472425002500020022x.
[6] SIMON N S.Nitrogen cycling between sediments and the shallow-water colun in the transition zone of the Photomac River and estuary [J].Estuarine Coastal Shelf Sci,1989,28(3):531-747.DOI:10.1016/0272-7714(88)90002-9.
[7] 汪淼,严红,焦立新,等.滇池沉积物氮内源负荷特征及影响因素[J].中国环境科学,2015,35(1):218-226. WANG Miao,YAN Hong,JIAO Lixin,et al.Characteristics of internal nitrogen loading and influencing factors in Dianchi Lake sediment [J].China Environmental Science,2015,35(1):218-226.
[8] SMALL G E,COTNER J B,FINLAY J C,et al.Nitrogen transformations at the sediment-water interface across redox gradients in the Laurentian Great Lakes [J].Hydrobiologia,2014,731(1):95-108.DOI:10.1007/s10750-013-1569-7.
[9] 梁淑轩,闫信,秦哲,等.白洋淀水体沉积物间隙水与上覆水中氮盐空间分布特征[J].环境与健康杂志,2011,28(1):47-49. LIANG Shuxuan,YAN Xin,QIN Zhe,et al.Spatial distribution of nitrogen salts in interstitial water and overlying water in Baiyangdian Lake[J].J Environ Health,2011,28(1):47-49.
[10] 梁淑轩,贾艳乐,闫信,等.pH值对白洋淀沉积物氮磷释放的影响[J].安徽农业科学,2010,38(36):20859-20862.DOI:10.3969/j.issn.0517-6611.2010.36.131. LIANG Shuxuan,JIA Yanle,YANG Xin,et al.Effect of the pH value on the nitrogen and phosphorus release from the sediment Baiyangdian[J].Journal of Anhui Agri Sci,2010,38(36):20859-20862.DOI:10.3969/j.issn.0517-6611.2010.36.131.
[11] 金相灿,屠清瑛.湖泊富营养化调查规范[M].北京:中国环境科学出版社,1990.
[12] 王娟.浅水湖泊中氮素分布特征与沉积物氨氮吸附释放机理研究[D].北京:中国矿业大学,2007.
[13] 王圣瑞,何宗健,赵海超,等.洱海表层沉积物中总氮含量及氨氮的释放特征[J].环境科学研究,2013,26(3):256-261. WANG Shengrui,HE Zongjian,ZHAO Haichao,et al.Studying on total nitrogen content release characteristics of ammonium in the surface sediment of Erhai Lake[J].Research of Environmental Sciences,2013,26(3):256-261.
[14] 张亚娟,刘存歧,古钧,等.汪洋沟表层沉积物中总氮含量和氨氮释放特征[J].环境工程学报,2015,9(2):519-524. ZHANG Yajuan,LIU Cunqi,GU Jun,et al.Total nitrogen content and release characteristics of ammonium in surface sediment of Wangyang River[J].Chinese Journal of Environmental Engineering,2015,9(2):519-524.
[15] 陈停.贾鲁河底泥中氮磷释放影响因素的研究[D].郑州:郑州大学,2012.DOI:10.7666/d.y2102003. CHEN Ting.Research on the release factors of the nitrogen and phosphorus in sediment[D].Zhengzhou:Zhengzhou University,2012.DOI:10.7666/d.y2102003.
[16] ALENKA P,IVAN M,FRANCE M,et al.Effects of pH and oxygen and ammonium concentration on the community structure of nitrifying bacteria from waste water [J].Applied and Environmental Microbiology,1998,64:3584-3590.
[17] 秦伯强,朱广伟.长江中下游地区湖泊水和沉积物中营养盐的赋存、循环及其交换特征[J].中国科学D辑 地球科学,2005,35(增刊Ⅱ):1-10.DOI:10.3321/j.issn:1006-9267.2005.z2.001.
[18] 姜霞,钟立香,王书航,等.巢湖水华暴发期水-沉积物界面溶解性氮形态的变化[J].中国环境科学,2009,29(11):1158-1163.DOI:10.3321/j.issn:1000-6923.2009.11.007. JIANG Xia,ZHONG Lixiang,WANG Shuhang,et al.Dissolvable nitrogen variation at water-sediment interface during alga blooming process in Chaohu Lake[J].China Environmental Science,2009,29(11):1158-1163.DOI:10.3321/j.issn:1000-6923.2009.11.007.
[19] 郭建宁,卢少勇,金相灿,等.低溶解氧状态下河网区不同类型沉积物的氮释放规律[J].环境科学学报,2010,30(3):614-620. GUO Jianning,LU Shaoyong,JIN Xiangcan,et al.Regularity of nitrogen release under low oxygen conditions from various sediments in a river network[J].Acta Scientiae Circumstantiae,2010,30(3):614-620.
[20] 张红,陈敬安,王敬富,等.贵州红枫湖底泥磷释放的模拟实验研究[J].地球与环境,2015,43(2):243-251.DOI:10.14050/j.cnki.1672-9250.2015.02.015. ZHANG Hong,CHEN Jing’an,WANG Jingfu,et al.A simulation study on the release of phosphorus from sediments in lake Hongfeng,Guizhou Province,China[J].Earth and Environment,2015,43(2):243-251.DOI:10.14050/j.cnki.1672-9250.2015.02.015.
[21] 吴丰昌,万国江,黄荣贵.湖泊沉积物-水界面营养元素的生物地球化学作用和环境效应Ⅰ.界面氮循环及其环境效应[J].矿物学报,1996,16(4):403-409. WU Fengchang,WAN Guojiang,HUANG Ronggui.Biogeochemical processes of nutrition elements at the sediment-water interface of lakesⅠ.Nitrogen cycling and its environmental impacts[J].Acta Mineralogica Sinica,1996,16(4):403-409.
[22] 李静文.松花江哈尔滨段底泥中营养盐释放规律与数字模拟[D].哈尔滨:哈尔滨工业大学,2012. LI Jingwen.A research on sediment nutrients release regulations and digital simulation of Songhua River in Harbin region[D].Harbin:Harbin Institute of Technology,2012.
[23] 濮培民,王国样,胡春华,等.底泥疏浚能控制湖泊富营养化吗[J].湖泊科学,2000,12(3):269-279.DOI:10.3321/j.issn:1003-5427.2000.03.012 PU Peimin,WANG Guoxiang,HU Chunhua,et al.Can we control lake eutrophication by dredging [J].Journal of Lake Sciences,2000,12(3):269-279.DOI:10.3321/j.issn:1003-5427.2000.03.012.
[24] BOOTSMA M C,BARENDREGT A,VAN AIPHEN J C A.Effeetiveness of reducing extenal nutrient load entering an eutrophocated shallow lakeeeosystem in the Nardermeer nature reserve [J].Neth Biol Conserv,1999,90(3):193-201.DOI:10.1016/s0006-3207(99)00027-0.
