Evaluation de la pollution des eaux issue de la zone industrielle de Skikda

Abstract

This work focused on environmental studies related to the liquid effluents discharges from industrial installations. It consists to analyze and model these releases to assess the degree of pollution and predict their impacts on receiving environment. In this work we are particularly interested in analyzing waters from releases generated by industrial installations located in the industrial zone of SKIKDA, during the period from 19/12/2012 to 25/06/2013, this research involved seven sampling points, collected seventeen times during the study period, we have performed for the seven stations a set of analytical approaches, physicochemical parameters, organic pollution parameters and dosage of tow trace metals (Fe, CrVI), whether changes of fourteen physicochemical characteristics. Firstly, all physicochemical approaches have revealed that the quality of waste water from different study sites of dubious nature and out class, it presents a chemical pollution for all stations except (RAF/K) and (RTE), which in turn have an organic pollution, that could generate a toxicity to the wildlife, aquatic and marine flora. In the analysis of ETM, marked mainly by the very high levels of Fe which are higher than standards and changes in CrVI limited for all stations while it marks an exceeding in (RAF/K). On the other hand, the statistical approach, (univariate statistical analyzes, bivariate and multivariate) allowed a spatiotemporal assessment and waste water quality modeling at each station, showing a quality degradation of these waters.