期刊文献+

污水土地处理系统流态影响因素及优化

Effect and optimization on hydrodynamic characteristics in wastewater land treatment
原文传递
导出
摘要 在污水土地处理系统的反应器模型中进行流态实验,使用正交分析理论及停留时间分布(RTD)分析理论,探索管网、集水层和承托层对反应器体积效率及推流的影响,并对反应器构造进行优化。使用正交实验分析发现,各因素对体积效率的影响程度顺序为:承托层>集水层>管网,管网与承托层的影响有明显的交互作用;集水层对推流有影响,并且管网与集水层有很显著的交互作用。使用RTD分析各因素交互作用发现,采用全网布水与集水时,集水层及承托层对流态的影响都不大。管网布设为过水断面的一半(半网)时,集水层的集水作用及承托层的布水作用可以增加反应器体积效率。"半网-有集水层-有承托层"的体积效率最高,流态最接近推流形式,其无因次平均停留时间为1.093,轴向扩散系数为0.037,属于低扩散程度。 Hydrodynamic characteristics experiment was carried out in the reactor model of wastewater land treatment system. The orthogonal analysis and the theory of residence time distribution were used to study the effect of pipeline, water-layer and bear-layer on the efficiency of volume and plug flow, and to optimize the struc- ture of the reactor. The orthogonal analysis shows that the impact on the efficiency of volume follows bear-layer 〉 water-layer 〉 pipeline and there is obvious interaction between pipeline and bear-layer. Water-layer has an effect on plug flow, and there is great interaction between pipeline and water-layer. The residence time distribution the- ory shows that water-layer and bear-layer has little effect on hydrodynamic characteristics when the pipeline is fully distributed. When the water cross-section is half of the pipeline ( half distributed) , water-layer and bear- layer has the function of collecting and distributing water, which could increase the efficiency of volume. So the volume efficiency of "half distribution pipeline-water layer-bear-layer" is the highest, and hydrodynamic charac- teristics is the nearest to plug flow. The dimensionless mean residence time is 1. 093, the dispersion degree of 0. 037 is low.
出处 《环境工程学报》 CAS CSCD 北大核心 2012年第7期2149-2153,共5页 Chinese Journal of Environmental Engineering
基金 国家"水体污染控制与治理"科技重大专项(2009ZX07317-008-02)
关键词 土地处理系统 水力流态 正交分析 停留时间分布 land treatment system hydrodynamic characteristics orthogonal analysis residence time dis-tribution
  • 相关文献

参考文献13

  • 1郭一令,王森,高恺,李云峰,杨雷,秦霞.耕作层下土地自然净化技术处理村镇生活污水[J].中国给水排水,2009,25(10):59-62. 被引量:18
  • 2Jeff F. Holland, Jay F. Martin, Timothy Granata, et al. Effects of wetland depth and flow rate on residence time dis- tribution characteristics. Ecological Engineering, 2004, 23 ( 3 ) : 189-203.
  • 3Tongwang Zhang, Tiefeng Wang, Jinfu Wang. Mathemati- cal modeling of the residence time distribution in loop reac- tors. Ecological Engineering and Processing, 2005, 44 (11) :1221-1227.
  • 4郑天柱,何成达,谈玲.W-SFCW和SFCW的水流特性试验研究[J].水资源保护,2008,24(2):18-21. 被引量:6
  • 5李现坡,杨勇,马院红,余兆祥.潜流式湿地系统停留时间分布实验结果分析[J].环境污染与防治,2008,30(2):64-67. 被引量:14
  • 6Mark E. Davis, Robert J. Davis. Fundamentals of Chemi- cal Reaction Engineering. New York: The McGraw-Hill Companies, 2003. 257 -272.
  • 7IAEA. Radiotracer Residence Time Distribution Method for Industry and Environment Applications. Vienna: IAEA, 2008.55-61.
  • 8Timothy M. Werner, Robert H. Kadlec. Wetland resident time distribution modeling. Ecological Engineering, 2000, 15(1) : 77-90.
  • 9Francis A. Digiano, Weidong Zhang, Alessandro Trava- glia. Calculation of the mean residence time in distribution systems from tracer studies and models. Journal of Water Supply : Research and Technology, 2005, 54 ( 1 ) : 1-14.
  • 10Metcalf L. , Eddy H. Wastewater Engineering Treatment and Reuse. USA: McGraw-Hill International Edition, 2004. 218-252.

二级参考文献15

  • 1林诚.一个描述停留时间分布的三参数流动模型[J].福州大学学报(自然科学版),1993,21(6):81-85. 被引量:5
  • 2王成瑞.低成本污水处理技术及工程实例[M].北京:化学工业出版社.2008.
  • 3国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002:725-729.
  • 4PERSSON J,SOMES N L G,WONG Y H F. Hydraulics efficiency of constructed wetlands and ponds[J]. Water Sci. Technol. ,1999,40(3) :291-300.
  • 5WERNER T M,KADLEC R H. Wetland residence time mod- eling[J]. Ecol. Eng. , 1999(15):77-90.
  • 6BOLSTER C H,SAIERS J E. Development and evaluation of a mathematical model for surface-water flow within the Shark River Slough of the Florida Everglades[J]. Hydrol., 2002, 259:221-35.
  • 7JEFF F H,JAY F M, TIMOTHY G, et al. Effects of wetland depth and flow rate on residence time distribution characteristics[J]. Ecological Engineering, 2004,23 : 189-203.
  • 8WERNER T M,KADLEC R H. Application of residence time distributions to stormwater treatment systems[J]. Ecol. Eng. , 1996,7(3) ;213-234.
  • 9国家环保总局.水和废水分析方法[M].3版.北京:中国环境科学出版社,1989.
  • 10SAPKOTA D P. Gravel media filtration as a constructed wetland component for the reduction of suspended solids from marathon pond effluent[J]. Water Science Technology, 1994,29(4) :55-57.

共引文献30

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部