地球科学进展 ›› 2007, Vol. 22 ›› Issue (10): 1041 -1047. doi: 10.11867/j.issn.1001-8166.2007.10.1041

研究论文 上一篇    下一篇

潜流构建湿地氮素转化运移的理论模型研究
宋新山 1,邓 伟 2,夏永云 1   
  1. 1.东华大学环境科学与工程学院,上海 201620;2.中国科学院成都山地灾害与环境研究所,四川 成都 610041
  • 收稿日期:2007-03-28 修回日期:2007-09-03 出版日期:2007-10-15
  • 通讯作者: 宋新山(1972-),男,河南叶县人,副教授,主要从事水环境、环境数学模拟等方面的研究.E-mail:newmountain@dhu.edu.cn E-mail:newmountain@dhu.edu.cn
  • 基金资助:

    中国科学院湿地生态环境重点实验室基金项目“基于地表流的湿地水流动力学模型研究”(编号:WELF-2004-B-007);上海高校选拔培养优秀青年教师科研专项基金项目“组合式构建湿地污水脱氮处理的最优化设计和运行工艺研究”(编号:113-07-0056017)资助.

Theory Model Based on Transformation Mechanisms and Solute ransportation of Nitrogen in Subflow Constructed Wetlands

SONG Xin-shan 1, DENG Wei 2, XIA Yong-yun 1   

  1. 1.College of Environmental Sciences and Engineering, Donghua University, Shanghai 201620,China;2.Institute of Mountain Hazards and Environment, CAS, Chengdu 610041, China
  • Received:2007-03-28 Revised:2007-09-03 Online:2007-10-15 Published:2007-10-10

构建湿地中氮素的主要存在形态为有机氮和无机氮,无机态氮主要包括氨态氮和硝态氮两种形态。一方面,这些氮素之间通过矿化、氨同化、硝化、反硝化、吸附交换、植物吸收等物理、化学及生物学过程相互联系并相互转化;另一方面在构建湿地污水处理系统中,从进水到出水,这些不同形态的氮素又随多孔介质中的饱和流发生运移。根据氮素的转化机理和溶质运移理论,以构建湿地中氮素的溶质运移模型为基础,将氮素转化的机理过程作为源汇项包括到基本模型中,由不同形态氮素的运移转化模型相联合形成构建湿地中氮素转化运移的理论模型系统。根据文献调研,给出模型系统参数的参考值,并简要介绍了模型系统的计算机语言求解方法。该模型为深入研究构建湿地中污水脱氮综合机理提供工具,其结果为以脱氮为目的的构建湿地的设计提供科学参考。

In constructed wetlands, the main occurrence formation of nitrogen includes organic nitrogen and inorganic nitrogen, and the inorganic nitrogen includes ammonia nitrogen and nitrate-nitrogen. The different formation of nitrogen is transformed reciprocally through some physical, chemical and biological process, such as mineralization, ammonia and nitrate-nitrogen assimilation, nitrification, denitrification, adsorption and exchange of ammonia-nitrogen, plant uptake, plant decaying and origanic-nitrogen sedimentation. Furthermore, in constructed wetlands used by wastewater treatment, the nitrogen solutes are transported by saturated Darcy flow and dispersion flow in porous medium. According to transformation mechanisms and solute transportation of nitrogen in constructed wetlands, the theory model of nitrogen transformation and transportation is based on solute transportation equations, and mechanism courses of nitrogen transformation are included in the basic transportation equations as source items and sink items. The state variables of mathematical model include organic, ammonia, nitrate, and plant uptake-nitrogen in constructed wetlands. Furthermore, the reference value of model parameters is given according to literature, and solution approach of how to use MATLAB to solve the model is given. This model can be used to estimate quantificationally nitrogen removal efficiency by different nitrogen transformation process and different influence factors, which can give quantificational parameter for the design of constructed wetlands, such as HLR(Hydraulic Load Ratio), HRT(Hydraulic Retention Time), Length of constructed wetlands, etc.

中图分类号: 

[1]Mayo A W, Bigambo T. Nitrogen transformantion in horizontaql subsurface flow constructed wetlands I:Model development[J]. Physics and Chemistry of the Earth, 2005,30:658-667.
[2]Liang Wei, Wu Zhenbin. Rsearch advances on nitrogen and phosphorus removal in constructed wetlands[J].Environmental Science Development,2000,3:32-37.[梁威, 吴振斌. 人工湿地对污水中氮磷的去除机制研究进展[J]. 环境科学动态, 2000,3:32-37.]
[3]Ji Guodong, Sun Tiehang, Li Shun. Constructed wetlands and its application for industrial wastewater treatment[J]. Chinese Journal of Applied Ecology,2002, 13(2):224-228.[籍国东, 孙铁珩, 李顺. 人工湿地及其在工业废水处理中的应用[J]. 应用生态学报, 2002, 13(2): 224-228.]
[4]Ji Guodong, Sun Tiehang, Chang Shijun. Constructed subsurface flow wetland for treating heavy oil-produced water[J].Environmental Science,2001, 22(4):95-99.[籍国东, 孙铁珩, 常士俊. 地表流构建湿地用于含重油废水的处理[J]. 环境科学, 2001, 22(4):95-99.]
[5]Zhu T, Sikora F J. Ammonium and nitrate removal in vegetabled an un vegetated gravel bed microcosm wetlands[J].Water Science and Technology,1995, 32(3):219-228.
[6]Hafner Sasha D,Jewell William J. Predicting nitrogen and phosphorus removal in wetlands due to detritus accumulation: A simple mechanistic model[J].Ecological Engineering,2006,12:1-8.
[7]Mayo A W, Mutamba J. Effect of HRT on nitrogen removal in a coupled HRP and unplanted subsurface flow gravel bed constructed wetlands[J]. Physics and Chemistry of the Earth,2004,29:1 253-1 257.
[8]Mutamba J. Nitrogen removal in a coupled HRP and subsurface gravel bed constructed wetlands[D]. Department of Water Resources Engineering, University of Dar er Salaam,2002:1-5.
[9]Yao Chonghua. Unit Process of Wastewater Disposal[M]. Beijing: Chemical Industry Press, 2001:103-108,10-11.[姚重华. 废水处理单元过程[M]. 北京: 化学工业出版社, 2001:103-108,10-11.] 
[10]Variga Sawaittayothin,Chongrak Polprasert. Nitrogen mass balance and microbial analysis of constructed wetlands treating municipal landfill leachate[J].Bioresource Technology,2007,98:565-570.
[11]Kadlec R H, Tanner C C, Hally V M. Nitrogen spiraling in subsurface-flow constructed wetlands: Implications for treatment response[J].Ecological Engineering,2005,25:365-381.
[12]Cui Baoshan, Yang Zhifeng. Research advances in wetland ecosystem models[J].Advances in Earth Science,2001, 16(3):352-358.[崔保山,杨志峰.湿地生态系统模型研究进展[J]. 地球科学进展, 2001,16(3):352-358.]
[13]Metcalf, Eddy. Wastewater Engineering: Treatment,Disposal and Reuse[M]. New Delhi: McGraw-Hill Ltd,1995:12-15.
[14]Li Yunzhu, Li Baoguo. Solute Transportation in Soil[M]. Beijing: Science Press, 1998:304-309.[李韵珠, 李保国.土壤溶质运移[M]. 北京: 科学出版社, 1998:304-309.]
[15]Jфrgensen S E. Theory of Ecological Modelling[M].Lu Jianjia, Zhou Yuli, translated. Shanghai: Shanghai Translation Publication Ltd,1998:322-328.[杨戈逊 S E著.生态模型法原理[M].陆健健,周玉丽译.上海:上海翻译出版公司,1998:322-328.]
[16]Polprasert C, Khatiwada N R. An integrated kinetic model foe water hyacinth ponds used for wastewater treatment[J].Water Research,1998,32(1):179-185.
[17]Martin J F, Reddy K R. Interaction and spatial distribution of wetland nitrogen process[J].Ecological Modelling,1997,105:1-21.
[18]Mehran M, Tanji K K. Computer modeling of nitrogen transformation in soils[J].Journal of Environmental Quality,1974,3:391-395.
[19]Jorgensen S E, Nielsen S N, et al.Handbook of Ecological Parameters and Ecotoxicology[M]. Amsterdan: Elsevier,1991:63-77.
[20]Ferrara R A, Hermann D P E. Dynamic nutrient cycle model for waste stabilization ponds[J].Journal of Environmental Engineering,1980,106(1):37-55.
[21]Barber S A. Soil Nutrient Bioavailability:A Mechanistic Approach[M].Washington:John Wiley & Sons,1984:23-29.
[22]Xue Dingyu, Chen Yangquan. Matlab Solution of High Applied Mathematics[M]. Beijing: Tsinghua University Press,2004:26-250.[薛定宇, 陈阳泉. 高等应用数学问题的Matlab求解[M]. 北京: 清华大学出版社, 2004:246-250.]
[23]Song Xinshan, Deng Wei. Environmental Mathematics Models[M]. Beijing: Science Press, 2004:186-191.[宋新山,邓伟.环境数学模型[M].北京:科学出版社, 2004:186-191.]

[1] 陈宗宇. 水文地球化学模拟研究的现状[J]. 地球科学进展, 1995, 10(3): 278-282.
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