Comparasion of the efficiency of physical and chemical treatments of textile effluent using aluminium sulfate, activated coal and the advanced oxidative process fenton (H2O2)
DOI:
https://doi.org/10.6008/CBPC2179-6858.2021.004.0032Keywords:
Poluição ambiental, Efluente têxtil, Tratamento físico-químico, Processo oxidativo-avançadoAbstract
The washing and dyeing stages of the tissues result in a highly polluting effluent, requiring prior treatment for subsequent disposal into the water body. There are several types of effluent treatment, and based on this, the choice of an appropriate treatment will depend on the chemical characteristics of the effluent in question and its degree of toxicity. This work aims to evaluate and compare the efficiency of physical-chemical treatment processes coagulation-flocculation followed by adsorption and POA using the parameters color, turbidity, pH and COD (chemical oxygen demand). The samples used in the tests came from an industrial jeans laundry, being the final textile effluent. For the treatments, the samples were collected and no previous treatment was performed. Activated carbon was used as an adsorbent and aluminum sulfate as a coagulant. For the statistical treatment, Shapiro-Wilk normality tests (α= 0.05) were performed and then bivariate linear regression, Pearson correlation and Kendall bivariate correlation were performed for further descriptive analysis. The POA obtained a better response compared to other treatments and the best results for the reduction of the analyzed parameter: COD (96%) in the amount of Fe+2/ H2O2 of 0.55 g.
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