TY - JOUR
T1 - A three-stage treatment system for highly polluted urban road runoff
AU - Hilliges, Rita
AU - Schriewer, Alexander
AU - Helmreich, Brigitte
N1 - Funding Information:
The authors would like to thank the Deutsche Bundesstiftung Umwelt for the funding of the project (AZ 22338). We also like to thank the companies Huber Technology, Berching, Germany, and HydroCon, Münster, Germany, for cooperation.
PY - 2013/10/5
Y1 - 2013/10/5
N2 - A three-stage treatment device for polluted urban road runoff was installed and tested at a highly trafficked urban road over a period of one year. In the first stage coarse material and particles from the runoff are removed by a special gutter system. The second stage eliminates particles using a hydrodynamic separator. In the third stage dissolved pollutants are adsorbed in a filter unit with lignite as filter material. Twenty-four rain events were sampled over the one year period and analyzed for dissolved and particulate copper (Cu), zinc (Zn), lead (Pb), suspended solids (SS), total organic carbon (TOC), sodium (Na), and pH value. The treatment system was able to safely retain all relevant pollutants during the investigated period, except Na. In the effluent of the treatment device Pb could never be detected, values measured for Zn were in the range of the detection limit. Cu, the element most frequently detected in the effluent, never exceeded the critical value of 50μg/L set by the German Federal Soil Protection Act and Ordinance. The median Cu concentration in the effluent of the treatment system was 8.13μg/L. The treatment system proved to be very effective. Highly polluted road runoff can be purified by the system to an extent that no contamination risk for soil and groundwater remains when infiltrated into the soil.
AB - A three-stage treatment device for polluted urban road runoff was installed and tested at a highly trafficked urban road over a period of one year. In the first stage coarse material and particles from the runoff are removed by a special gutter system. The second stage eliminates particles using a hydrodynamic separator. In the third stage dissolved pollutants are adsorbed in a filter unit with lignite as filter material. Twenty-four rain events were sampled over the one year period and analyzed for dissolved and particulate copper (Cu), zinc (Zn), lead (Pb), suspended solids (SS), total organic carbon (TOC), sodium (Na), and pH value. The treatment system was able to safely retain all relevant pollutants during the investigated period, except Na. In the effluent of the treatment device Pb could never be detected, values measured for Zn were in the range of the detection limit. Cu, the element most frequently detected in the effluent, never exceeded the critical value of 50μg/L set by the German Federal Soil Protection Act and Ordinance. The median Cu concentration in the effluent of the treatment system was 8.13μg/L. The treatment system proved to be very effective. Highly polluted road runoff can be purified by the system to an extent that no contamination risk for soil and groundwater remains when infiltrated into the soil.
KW - Best management practice
KW - Heavy metals
KW - Road runoff
KW - Treatment system
UR - http://www.scopus.com/inward/record.url?scp=84879406204&partnerID=8YFLogxK
U2 - 10.1016/j.jenvman.2013.05.024
DO - 10.1016/j.jenvman.2013.05.024
M3 - Article
C2 - 23770438
AN - SCOPUS:84879406204
SN - 0301-4797
VL - 128
SP - 306
EP - 312
JO - Journal of Environmental Management
JF - Journal of Environmental Management
ER -