Authors
1 Engineer Intera Ltd.
2 University of Waterloo
3 University of Technology-Iraq
Abstract
The change from rural to urban landaus has an effect on the volume, rate and quality of storm water runoff. The pollutants originating from a wide variety of processes such as soil erosion, litter, dust, dr-icing salts, tire wear, etc accumulate on urban land surfaces, ans are subsequently washed off by rainfall or snowmelt.
The problem of deteriorating the quality of strmwater runoff has not received as much attention as they of increased flooding. In this paper a brief review is made initially of the alternative methods available for controlling the quality of the runoff, discharging into the river or sewer, It is observed that one of the interesting methods is the construction of natural or artificial retention ponds. In the present study, an attempt is made to define the water quality criteria currently used in the design those ponds. A simulation model is developed to evaluate and analyses the removal efficiency and hydraulic behavior of retention facilities; also a design procedure is constructed. A multi-objective analysis is formulated to illustrate possible decision-making process for the case when water quality objectives are not specified.
Main Subjects
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