Treatment of road runoff by coagulation/flocculation and sedimentation
| Autor: | Maria Viklander, Annelie Hedström, Fredrik Nyström, Kerstin Nordqvist, Inga Herrmann |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Flocculation
Environmental Engineering Sedimentation (water treatment) Rain 0208 environmental biotechnology Environmental engineering Context (language use) 02 engineering and technology 010501 environmental sciences Stormwater treatment Waste Disposal Fluid 01 natural sciences 020801 environmental engineering Scientific method Water Movements Environmental science Coagulation (water treatment) Surface runoff Water Pollutants Chemical Environmental Monitoring 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | Water Science and Technology. 79:518-525 |
| ISSN: | 1996-9732 0273-1223 |
| DOI: | 10.2166/wst.2019.079 |
| Popis: | A laboratory investigation of the treatment potential of a coagulation process in the context of stormwater treatment was undertaken. The initial 25 L road runoff generated from four rain events was collected and subjected to a jar-testing regime with two commercial coagulants. The treatment effect was assessed by analysing the runoff before and after treatment for turbidity, suspended solids and metal content. The coagulation process resulted in particle and total metal reduction of more than 90% compared to 40% for only sedimentation. Up to 40% reduction of dissolved Cr, Cu and Pb was also observed compared to 0% for sedimentation. This study shows that coagulation may be a useful process for stormwater treatment systems when the treatment requirements are high. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|