Degradation of sanitation facilities: prediction of effluent chemical impact of a cosmetics plant in abidjan, côte d'ivoire
DOI:
https://doi.org/10.13171/mjc02502181813ehoumanAbstract
The malfunctioning of sanitation systems is a major challenge of public health and environmental management that calls on all actors those have the power of taking decision. In this study, both physicochemical and biodegradability parameters of effluents from cosmetics plant were determined in order to predict their chemical impact on the degradation of sanitation system. The studied plant is located in Abidjan. The parmeters like colorimetry and gravimetry were used to highlight the effects of effluents in contact with iron and copper. Then the obtained characteristics during four sampling campaigns, are then analysed using the AFNOR and Rodier methods. The results showed that the studied effluents are corrosive for iron and copper, in addition to be acidic, abiotic and oxidising. This type of effluents can favor the production of hydrogen sulphide which is the main cause of abiotic chemical degradation of wastewater treatment station. These findings are important for borh the protection and design of effluent drainage systems for this unit, and for effluent pre-treatment in order to eliminate hydrogen sulphide.
Key words: cosmetic effluent ; gravimetry ; colorimetry ; structural degradation ; hydrogen sulphide
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