Motor Vehicle Wash-off Water as a Source of Phosphorus in Roadway Runoff

Journal of Water and Environment Technology

Naoyuki Kishimoto¹  Rie Simpson²  Keiko Wada²  Naoko Takei³ 

[1] Faculty of Science and Technology, Ryukoku University, Otsu, Japan ;Institute of Water Environmental Research, Lake Biwa-Yodo River Water Quality Preservation Organization, Osaka, Japan ;TORAY TECHNO CO., LTD., Otsu, Japan ;

关键词: roadway runoff;    phosphorus;    motor vehicle;    engine oil additives;    non-point source;   

DOI  :  10.2965/jwet.19-047

来源: DOAJ

【 摘 要 】

Algal water blooms in lakes or reservoirs are often caused by an enrichment of phosphorus. Depending on a bottom environment, dissolved phosphorus (phosphate) can be released into a water column from bottom sediments and accelerate algal and macrophyte nutrient dynamics. This study focuses on phosphorus pollutant loads in stormwater wash-off from roadways. Control of phosphorus discharge from non-point sources in urban areas is important for preventing water pollution. Sources of phosphorus in pollutant loads were explored by comparing first flush runoff with road dust/water mixture and vehicle wash-off water, where characteristics of the particulate and dissolved portions, and the relationship between road dust and wash-off from vehicles were also discussed. It was clear that the concentration of dissolved phosphorus in the vehicle wash-off water was higher than that in the first flush runoff. One of the affecting factors of the dissolved phosphorus was inferred to be the nature of the additives in engine oils or certain types of engines.

【 授权许可】

Unknown