MATEC Web Conf.
Volume 144, 2018International Conference on Research in Mechanical Engineering Sciences (RiMES 2017)
|Number of page(s)||9|
|Published online||09 January 2018|
Wastewater diffusive dilution and sedimentation of the fine contaminated particles for nonuniform flow in open channels
Moscow State University of Civil Engineering, Yaroslavskoye shosse, 26, Moscow, Russia, 129337
2 Journal «Power Technology and Engineering», 2/1 Voroncovsky Pereulok, Moscow, Russia
* Corresponding author: firstname.lastname@example.org
The influence of non-uniformity on mass transfer processes in open channels have been investigated under the action of urbanization factors. The study is related to the urgent problem of environmental degradation of water objects in urbanized areas. It is known that the water quality in the water objects depends on the manner in which the contaminants spread how they mix with the river water and diluted by it. The main results of the study consist of recommendations to incorporate non-uniformity factor to the calculation of diffusion dilution of wastewater and prediction of river processes. So the effect of the flow non-uniformity on the diffusion model of pollutants dilution and diffusion coefficient have been investigated. Formulas for the concentration profiles calculating and the average concentration of fine particulate matter in nonuniform gradually varied flow were presented. The deposition length of suspended contaminants were received, based on the hydraulic resistance laws of nonuniform gradually varied flow.
Key words: nonuniform flow / diffusive dilution / hydraulic resistance / suspended contaminants
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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