Phosphorus retention in a constructed wetland system used to treat dairy wastewater

被引：31

作者：

O'Neill, A. ^{[1
]}

Foy, R. H. ^{[2
]}

Phillips, D. H. ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Planning Architecture & Civil Engn, Environm Engn Res Ctr, Belfast BT9 5AG, Antrim, North Ireland

[2] Agri Food & Biosci Inst, Belfast BT9 5PX, Antrim, North Ireland

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 08期

关键词：

Dairy wastewater; Constructed wetland systems; Model; Phosphorus retention; Water balance; REMOVAL; DESIGN; PERFORMANCE; NUTRIENTS;

D O I：

10.1016/j.biortech.2011.01.075

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The aim of this study was to develop an input/output mass balance to predict phosphorus retention in a five pond constructed wetland system (CWS) at Greenmount Farm, County Antrim, Northern Ireland. The mass balance was created using 14-months of flow data collected at inflow and outflow points on a weekly basis. Balance outputs were correlated with meteorological parameters, such as daily air temperature and hydrological flow, recorded daily onsite. The mass balance showed that phosphorus retention within the system exceeded phosphorus release, illustrating the success of this CWS to remove nutrients from agricultural effluent from a dairy farm. The last pond, pond 5, showed the greatest relative retention of 86%. Comparison of retention and mean air temperature highlighted a striking difference in trends between up-gradient and down-gradient ponds, with up-gradient ponds 1 and 2 displaying a positive quadratic relationship and down-gradient ponds 3 through 5 displaying a negative quadratic relationship. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5024 / 5031

页数：8

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