Permanent runoff controls

Article Abstract:

The Center for Research in Water Resources (CRWR) at the University of Texas at Austin, in collaboration with the Texas Dept of Transportation, had built evaluation facilities for the run-off control system. The evaluation facilities were used to test the pollutant removal efficiency and maintenance requirements of permanent highway runoff control designs. The tests revealed that many run-off control systems can effectively remove pollutants from the storm-water runoff but intense maintenance programs are still needed. In addition, appropriate treatment system must be adopted to cut down the cost of storm-water control programs.

Equipment and supplies, Testing, Pollution control industry, Buildings and facilities, Texas. Department of Transportation

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Wetlands treat mine runoff

Article Abstract:

Engineers at McCulley, Frick & Gillman have devised an integrated, passive wetland treatment system as part of efforts to rehabilitate the Mike Horse and Anaconda mines in Missoula, MT. The metal-enriched and acidic runoff from the mines were being discharged into the upper Blackfoot River. The constructed system will take several years before it reaches full treatment capacity but will last for decades. They have been designed to comply with National Pollutant Discharge Elimination Systems restrictions for zinc, copper, lead and other metals.

Methods, Management, Environmental aspects, Pollution, Water pollution, Wetland conservation, Missoula, Montana

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Meandering wetlands offer improved runoff treatment

Article Abstract:

An innovative meandering wetlands system in Monroe, NC, is expected to increase pollutant uptake rates but will cost less than conventional wet pond detention basins. Built at a cost of $400,000, the wetlands system is made up of nine independent channels for processing storm-water runoff from a 30 acre urban zone. It has a forebay for presettling and an overflow weir to prevent plants and sediments from draining out during high flows. The experimental system is very similar to a natural wetland but performs as well as existing detetion ponds.

Design and construction, Waste management, Storm water retention basins, Constructed wetlands, Monroe, North Carolina

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