Beltway 8 Wetland Water Quality Project: Constructed Wetlands for Storm Water Polishing and Wetland Mitigation Banking

1998 ◽  
Vol 1626 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Robert L. Knight ◽  
Robert Adams ◽  
Colleen O’Brien ◽  
Eduardo R. Davis
Keyword(s):  
Water Quality ◽  
Quality Improvement ◽  
Flood Control ◽  
Wildlife Habitat ◽  
Wetland Mitigation ◽  
Storm Water ◽  
Water Runoff ◽  
Water Quality Improvement ◽  
Pump Station ◽  
Natural Treatment

The Harris County Flood Control District is implementing a wetland mitigation bank project that includes highway runoff as a significant water source. Part of this project is being implemented in cooperation with the Texas Department of Transportation through funding from the Intermodal Surface Transportation Efficiency Act for water quality improvement. This collaborative effort includes treatment and final polishing of storm water runoff from a portion of Beltway 8, northeast of Houston, Texas. The project includes approximately 89 ha (220 acres) of storm water-polishing wetlands and associated wildlife habitat. The overall train of natural treatment processes includes a tie-in to the existing beltway storm sewer, a surge basin for initial collection and storage of storm water, a pump station and force mail allowing flexible water delivery to the rest of the system, a series of polishing ponds and polishing wetland marshes, and an interconnected array of habitat wetlands and swales including ponds, littoral marshes, and transitional wetland forest areas. Design of the polishing and treatment wetlands balances the multiple goals of water quality improvement, flood-flow retention, and creation of valuable wildlife habitat.

scholarly journals EFFICACY OF PHRAGMITE KARKA PLANT IN CONSTRUCTED WETLAND SYSTEM

2015 ◽  
Vol 3 (9SE) ◽  
pp. 1-5
Author(s):  
Shalini Saxena
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Quality Improvement ◽  
Constructed Wetland ◽  
Flood Control ◽  
Water Quality Improvement ◽  
The Past ◽  
Wetland Treatment ◽  
Natural Wetlands ◽  
Wetland System

Wetlands, either constructed or natural, offer a cheaper and low-cost alternative technology for wastewater treatment. A constructed wetland system that is specifically engineered for water quality improvement as a primary purpose is termed as a ‘Constructed Wetland Treatment System’ (CWTS). In the past, many such systems were constructed to treat low volumes of wastewater loaded with easily degradable organic matter for isolated populations in urban areas. However, widespread demand for improved receiving water quality, and water reclamation and reuse, is currently the driving force for the implementation of CWTS all over the world. Recent concerns over wetland losses have generated a need for the creation of wetlands, which are intended to emulate the functions and values of natural wetlands that have been destroyed. Natural characteristics are applied to CWTS with emergent macrophyte stands that duplicate the physical, chemical and biological processes of natural wetland systems. The number of CWTS in use has very much increased in the past few years. The use of constructed wetlands is gaining rapid interest. Most of these systems cater for tertiary treatment from towns and cities. They are larger in size, usually using surface-flow system to remove low concentration of nutrient (N and P) and suspended solids. However, in some countries, these constructed wetland treatment systems are usually used to provide secondary treatment of domestic sewage for village populations. These constructed wetland systems have been seen as an economically attractive, energy-efficient way of providing high standards of wastewater treatment by the help of Phragmite karka plant. Typically, wetlands are constructed for one or more of four primary purposes: creation of habitat to compensate for natural wetlands converted for agriculture and urban development, water quality improvement, flood control, and production of food and fiber.

Leaching potential of heavy metals from road-deposited sediment and sorptive media during dry periods in storm water quality improvement devices

2020 ◽  
Vol 6 (7) ◽  
pp. 1890-1901
Author(s):  
Steffen H. Rommel ◽  
Luca Noceti ◽  
Philipp Stinshoff ◽  
Brigitte Helmreich
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Quality Improvement ◽  
Storm Water ◽  
Leaching Potential ◽  
Water Quality Improvement

This study evaluated if retained heavy metals leach from trapped sediment or sorptive media in storm water quality improvement devices during dry periods.

Sign in / Sign up

Export Citation Format

Share Document