Potential for total nitrogen removal by combining vertical flow and horizontal flow constructed wetlands: A full-scale experiment study

被引:111
作者
Molle, Pascal [1 ]
Prost-Boucle, Stephanie [1 ]
Lienard, Alain [1 ]
机构
[1] Cemagref, Water Qual & Pollut Prevent Res Unit, F-69336 Lyon 09, France
关键词
constructed wetland; denitrification; design parameters; hybrid systems; nitrification;
D O I
10.1016/j.ecoleng.2008.05.016
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
To improve total nitrogen removal, a full-scale experimental study was conducted on a hybrid constructed wetlands plant designed for 100 person equivalents. The plant was composed of a first stage of vertical filters (fed with raw wastewater), followed by a second stage of horizontal filters. It was monitored over one year, measuring hydraulic conditions, physico-chemical conditions, gas emission, oxygen levels in the gas phase as well as regular treatment performance by 24-h composite samples. Different vertical filter configurations (media depth, intermediate and passive aeration system) were tested as well as two horizontal filter designs. Nitrogen removal is discussed in terms of the efficiency of each stage in relation to the season and the load applied. This study indicates limits for systems configuration and suggests some design avenues for hybrid systems to reach high and regular levels of nitrogen removal with reasonable surface area per person. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:23 / 29
页数:7
相关论文
共 15 条
[1]  
AFNOR, 2005, REC NORM REGL ENV, V1, P552
[2]   Nitrogen removal from domestic effluent using subsurface flow constructed wetlands: influence of depth, hydraulic residence time and pre-nitrification [J].
Bayley, ML ;
Davison, L ;
Headley, TR .
WATER SCIENCE AND TECHNOLOGY, 2003, 48 (05) :175-182
[3]  
Brix H, 2003, WETLANDS: NUTRIENTS, METALS AND MASS CYCLING, P237
[4]   Nitrogen transformations and losses following pig slurry applications to a natural soil filter system (Solepur process) in Brittany, France [J].
Chadwick, DR ;
van der Weerden, T ;
Martinez, J ;
Pain, BF .
JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 1998, 69 (01) :85-93
[5]   Design of a hybrid reed bed system to achieve complete nitrification and denitrification of domestic sewage [J].
Cooper, P ;
Griffin, P ;
Humphries, S ;
Pound, A .
WATER SCIENCE AND TECHNOLOGY, 1999, 40 (03) :283-289
[6]  
International Water Association (IWA), 2000, 8 IWA 8 IWA, P156
[7]   Nitrogen spiraling in subsurface-flow constructed wetlands: Implications for treatment response [J].
Kadlec, RH ;
Tanner, CC ;
Hally, VM ;
Gibbs, MM .
ECOLOGICAL ENGINEERING, 2005, 25 (04) :365-381
[8]   Adsorption and biological degradation of ammonium and sulfide on peat [J].
McNevin, D ;
Barford, J ;
Hage, J .
WATER RESEARCH, 1999, 33 (06) :1449-1459
[9]   Effect of reeds and feeding operations on hydraulic behaviour of vertical flow constructed wetlands under hydraulic overloads [J].
Molle, P ;
Liénard, A ;
Grasmick, A ;
Iwema, A .
WATER RESEARCH, 2006, 40 (03) :606-612
[10]   How to treat raw sewage with constructed wetlands:: an overview of the French systems [J].
Molle, P ;
Liénard, A ;
Boutin, C ;
Merlin, G ;
Iwema, A .
WATER SCIENCE AND TECHNOLOGY, 2005, 51 (09) :11-21