Diel changes in iron concentrations in surface-flow constructed wetlands

2001 ◽  
Vol 44 (11-12) ◽  
pp. 421-426 ◽  
Author(s):  
R.R. Goulet ◽  
F.R. Pick
Keyword(s):  
Constructed Wetlands ◽  
Littoral Zone ◽  
Surface Flow ◽  
Diel Variation ◽  
Diel Changes ◽  
Treatment Performance ◽  
Late Fall ◽  
Surface Flow Constructed Wetlands ◽  
Iron Concentrations

Diel changes in Fe concentrations were examined from spring to late fall at two surface-flow wetlands. The highest concentrations of ferrous, dissolved and total Fe were measured at night in the littoral zone, when oxygen and pH were low. The lowest Fe concentrations were measured during the day when oxygen and pH were highest. The amplitude of change over the day-night cycle was greatest in July and lowest in May and October. These diel changes were also observed at the outlet of both wetlands. Overall, O2 and pH explained 60% of the observed seasonal and diel variation in water Fe (R2=0.60, p=0.004). The treatment performance of wetlands can be overestimated when based on samples collected during the day.

IDENTIFYING THE MOST SUITABLE AREAS FOR SURFACE FLOW WETLAND CONSTRUCTION IN LITHUANIA

2015 ◽  
Author(s):  
Antanas DUMBRAUSKAS ◽  
Nijolė BASTIENĖ ◽  
Petras PUNYS
Keyword(s):  
Constructed Wetlands ◽  
Ecological Status ◽  
Surface Flow ◽  
Gis Analysis ◽  
Proximity Analysis ◽  
Wetland Construction ◽  
The Mean ◽  
Two Phases ◽  
Terrain Features ◽  
Surface Flow Constructed Wetlands

GIS-based approach to find the suitable sites for surface flow constructed wetlands was employed for the Lithuanian river basins with low ecological status. According to the nature of the analysed criteria the flowchart consists of two phases. Criteria used include hydrographical network, soil properties, terrain features, land use, etc. Some of them have strictly defined values (constraints), and other ranges within certain limits (factors). Limited criteria were analysed using rejection principle and influencing factors using proximity analysis and overlay methods. Selecting the potential sites using standard GIS analysis tools there was estimated about 3286 sites for possible wetlands with the mean area of inflow basin about 4 km2 in the basins of water bodies at risk.

scholarly journals Evaluating the performance of horizontal sub-surface flow constructed wetlands: A case study from southern India

2021 ◽  
Vol 162 ◽  
pp. 106170
Author(s):  
Priyanka Jamwal ◽  
Anjali V. Raj ◽  
Lakshmi Raveendran ◽  
Shahana Shirin ◽  
Stephanie Connelly ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Surface Flow ◽  
Southern India ◽  
Surface Flow Constructed Wetlands

scholarly journals Enhanced Benzofluoranthrene Removal in Surface Flow Constructed Wetlands with the Addition of Carbon

ACS Omega ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 2865-2872
Author(s):  
Qingqing Cao ◽  
Yan Li ◽  
Yan Kang ◽  
Zizhang Guo
Keyword(s):  
Constructed Wetlands ◽  
Surface Flow ◽  
Surface Flow Constructed Wetlands

Substrate Organic Matter to Improve Nitrate Removal in Surface-Flow Constructed Wetlands

2007 ◽  
Vol 36 (1) ◽  
pp. 194-207 ◽  
Author(s):  
Michael R. Burchell ◽  
R. Wayne Skaggs ◽  
Charles R. Lee ◽  
Steven Broome ◽  
George M. Chescheir ◽  
...  
Keyword(s):  
Organic Matter ◽  
Constructed Wetlands ◽  
Nitrate Removal ◽  
Surface Flow ◽  
Surface Flow Constructed Wetlands
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