Sorption media for stormwater treatment : A laboratory evaluation of five low-cost media for their ability to remove metals and phosphorous from artificial stormwater
Publikation: Forskning - peer review › Tidsskriftartikel
|Bidragets oversatte titel||Sorptions medier til behandling af regnvand|
|Bidragets oversatte undertitel||Laboratorie evaluering af fem billige mediers evne til fjernelse af metaller og fosfor fra kunstig regnvand|
Five sorption materials were studied with focus on polishing pretreated stormwater: crushed limestone, shell-sand, zeolite and two granulates of olivine. These materials are commercially available at comparatively low cost and have been subjected to a minimum of modification from their natural states. The sorbents were tested towards phosphorus, arsenic, cadmium, chromium, copper, nickel, lead and zinc at concentration and conditions relevant for typical stormwater. The materials were tested for sorption capacity and kinetics. Desorption was tested under neutral and alkaline conditions and in the presence of chloride. For most sorbent/sorbate combinations, significant sorption occurred within the first minutes of contact between sorbent and sorbate. Treatment to the low microgram per liter range could be achieved by contact times of less than an hour. The study indicated that sorption filters can be designed for long life expectancy at comparatively low cost by applying the materials tested.
|Tidsskrift||Water Environment Research|
- Sorption filter, stormwater treatment, sorption kinetics, sorption capacity, sorption isotherm, olivine, shell-sand, zeolite, limestone