Constructed Wetlands treating Urban Runoff Contaminated with Nitrogen

2008 ◽  
Author(s):  
Xiaohui Wu ◽  
Miklas Scholz ◽  
Lin Rao
Keyword(s):  
Constructed Wetlands ◽  
Urban Runoff

The treatment of metals in urban runoff by constructed wetlands

1998 ◽  
Vol 214 (1-3) ◽  
pp. 211-219 ◽  
Author(s):  
L Scholes ◽  
R.B.E Shutes ◽  
D.M Revitt ◽  
M Forshaw ◽  
D Purchase
Keyword(s):  
Constructed Wetlands ◽  
Urban Runoff

scholarly journals Reduction of Heavy Metals from Waste Water by Wetland

2014 ◽  
Vol 12 ◽  
pp. 35-43 ◽  
Author(s):  
Omprakash Sahu
Keyword(s):  
Waste Water ◽  
Constructed Wetlands ◽  
Mine Drainage ◽  
Flow Direction ◽  
Urban Runoff ◽  
Chemical Processes ◽  
Engineered Structures ◽  
Shallow Ponds ◽  
Physical And Chemical ◽  
Wastewater Treatment Systems

Constructed wetlands are artificial wastewater treatment systems consisting of shallow ponds or channels which have been planted with aquatic plants, and which rely upon natural microbial, biological, physical and chemical processes to treat wastewater. They typically have impervious clay or synthetic liners, and engineered structures to control the flow direction, liquid detention time and water level. Depending on the type of system, they may or may not contain an inert porous media such as rock, gravel or sand. Constructed wetlands have been used to treat a variety of wastewaters including urban runoff; municipal, industrial, agricultural and acid mine drainage. In this regard’s an attempted has been made to reduce the heavy metal present in waste water

A pollutant removal prediction tool for stormwater derived diffuse pollution

2008 ◽  
Vol 57 (8) ◽  
pp. 1257-1264 ◽  
Author(s):  
D. Michael Revitt ◽  
Lian Scholes ◽  
J. Bryan Ellis
Keyword(s):  
Constructed Wetlands ◽  
Environmental Concern ◽  
Polyaromatic Hydrocarbons ◽  
Urban Runoff ◽  
Surface Flow ◽  
Pollutant Removal ◽  
Prediction Tool ◽  
Porous Asphalt ◽  
Surface Flow Constructed Wetlands ◽  
Pollutant Removal Efficiency

This report describes the development of a methodology to theoretically assess the effectiveness of structural BMPs with regard to their treatment of selected stormwater pollutants (metals, polyaromatic hydrocarbons and herbicides). The result is a prioritisation, in terms of pollutant removal efficiency, of 15 different BMPs which can inform stormwater managers and other stakeholders of the best available options for the treatment of urban runoff pollutants of particular environmental concern. Regardless of the selected pollutant, infiltration basins and sub-surface flow constructed wetlands are predicted to perform most efficiently with lagoons, porous asphalt and sedimentation tanks being the least effective systems for the removal of pollutants. The limitations of the approach in terms of the variabilities in BMP designs and applications are considered.

The ecological value of constructed wetlands for treating urban runoff

2007 ◽  
Vol 55 (3) ◽  
pp. 63-69 ◽  
Author(s):  
S. Pankratz ◽  
T. Young ◽  
H. Cuevas-Arellano ◽  
R. Kumar ◽  
R.F. Ambrose ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Natural Habitat ◽  
Urban Runoff ◽  
Wildlife Habitat ◽  
Vegetative Cover ◽  
Ecological Value ◽  
Added Benefit ◽  
The Individual ◽  
The Town ◽  
Uptake Of Nutrients

The Sweetwater Authority's urban runoff diversion system (URDS) comprises constructed wetlands on a hillside between the town of Spring Valley and the Sweetwater Reservoir, California, USA. The URDS were designed to divert dry-weather and first-flush urban runoff flows from the Sweetwater reservoir. However, these constructed wetlands have developed into ecologically valuable habitat. This paper evaluates the following ecological questions related to the URDS: (1) the natural development of the species present and their growth pattern; (2) the biodiversity and pollutant stress on the plants and invertebrates; and (3) the question of habitat provided for endangered species. The URDS wetlands are comprised primarily of rush (Scirpus spp.) and cattails (Typha spp.). This vegetative cover ranged from 39–78% of the area of the individual wetland ponds. Current analyses of plant tissues and wetland sediment indicates the importance of sediment sorption for metals and plant uptake of nutrients. Analyses of URDS water following runoff events show the URDS wetlands do reduce the amount of nutrients and metals in the water column. Invertebrate surveys of the wetland ponds revealed lower habitat quality and environmental stress compared to unpolluted natural habitat. The value of the wetlands as wildlife habitat is constrained by low plant biodiversity and pollution stress from the runoff. Since the primary Sweetwater Authority goal is to maintain good water quality for drinking, any secondary utilization of URDS habitat by species (endangered or otherwise) is deemed an added benefit.

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.

ENERGY PRODUCTION FROM WASTEWATER USING HORIZONTAL AND VERTICAL SUBSURFACE FLOW CONSTRUCTED WETLANDS

2014 ◽  
Vol 13 (10) ◽  
pp. 2517-2523 ◽  
Author(s):  
Jose Villasenor Camacho ◽  
Maria del Carmen Montano Vico ◽  
Manuel Andres ◽  
Rodrigo Rodrigo ◽  
Francisco Jesus Fernandez Morales ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Energy Production ◽  
Subsurface Flow ◽  
Subsurface Flow Constructed Wetlands
Sign in / Sign up

Export Citation Format

Share Document