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

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

Author(s):  
Robert L. Knight ◽  
Robert Adams ◽  
Colleen O’Brien ◽  
Eduardo R. Davis

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.


EKOLOGIA ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 58-63
Author(s):  
Muhammad Fikri Darmawan ◽  
S.Y. Srie Rahayu ◽  
Cecep Sudrajat

Heavy metals in waters are a threat to living things both biota that are in these waters, as well as on plants and humans that depend on these water sources. Water quality improvement can be done by utilizing local gravestone (Pilsbryoconcha exilis) as a natural filter. In this study consisted of four treatments and three replications. The amount of gravestone weights of 200 grams, 300 grams and 400 grams acts as a treatment that will later be seen its effect on water containing arsenic metal. The results of this study indicate that local gravestone can reduce arsenic levels in waters with a treatment weight of 400 grams showed the best results with the final result arsenic level of 0.0101 ppm and the highest daily growth rate is 200 grams of weight treatment with a market value of 4.40%.


2001 ◽  
Author(s):  
Simon Toze ◽  
Peter Dillon ◽  
Paul Pavelic ◽  
Brenton Nicholson ◽  
Michel Gibert

2011 ◽  
Vol 14 (1/2/3/4) ◽  
pp. 182
Author(s):  
Nguyen Thi My Xuan ◽  
Dang Vu Bich Hanh ◽  
Le Thi Hong Tran

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