Urban Land: Study of Surface Run-off Composition and Its Dynamics

[摘要] The qualitative composition of urban land surface run-off is liable to significant variations. To study surface run-off dynamics, to examine its behaviour and to discover reasons of these variations, it is relevant to use the mathematical apparatus technique of time series analysis. A seasonal decomposition procedure was applied to a temporary series of monthly dynamics with the annual frequency of seasonal variations in connection with a multiplicative model. The results of the quantitative chemical analysis of surface wastewater of the 22nd Partsjezd outlet in Samara for the period of 2004-2016 were used as basic data. As a result of the analysis, a seasonal pattern of variations in the composition of surface run-off in Samara was identified. Seasonal indices upon 15 waste-water quality indicators were defined. BOD (full), suspended materials, mineralization, chlorides, sulphates, ammonium-ion, nitrite-anion, nitrate-anion, phosphates (phosphorus), iron general, copper, zinc, aluminium, petroleum products, synthetic surfactants (anion-active). Based on the seasonal decomposition of the time series data, the contribution of trends, seasonal and accidental components of the variability of the surface run-off indicators was estimated.

[发布机构] Water Supply and Wastewater Chai., Institute of Architecture and Civil Engineering, Samara State Technical University, Molodogvardeyskaya St. 194, Samara; 443001, Russia^1

[学科分类] 土木及结构工程学

[关键词] Mathematical apparatus;Multiplicative model;Qualitative compositions;Quantitative chemical analysis;Seasonal variation;Suspended material;Synthetic surfactants;Water quality indicators