Scores:
12
MNiSW
120.94
ICV
 
 

DETERMINATION OF MIXING ZONES FOR WASTEWATER WITH RECEIVER WATERS

Paulina Wójtowicz 1  ,  
 
1
Bialystok University of Technology, Department of Technology in Environmental Engineering and Protection, Wiejska 45E Str., 15-351 Białystok, Poland
J. Ecol. Eng. 2017; 18(4):192–198
Publish date: 2017-07-01
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ABSTRACT:
Discharges from wastewater treatment are among the point sources of pollution, in event if norms included in the applied legal acts will be exceeded. In determining the impact of these objects on the water environment often is assumed complete mixing wastewater with surface water in point or close to the discharge. In fact, the complete mixing waste water a short distance from the discharge occurs incidentally depending on the type of sewage receiver. The size and type of specific sewage receiver determines the conditions of self-purification. Complete mixing zone has a huge impact on the intensity of self-purification processes. Therefore the possibility determine the size zone of complete mixing of the waste water from the water receiver is important. The issue involves a series of methods, the most computational, which more or less allows to evaluate the distance complete mixing of the waste water. On the mixing wastewater with surface waters affects advection, turbulent and molecular diffusion. The article discusses the factors influencing the mixing process and the impact of mixing on the self-purification surface waters. The aim of the article is a review of several methods for determining the distance of the segment mix completely discharged wastewater with regard to the location of their discharge.