Integration of treatment technologies with Fenton reagent for laboratory effluent remediation
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2018
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This study investigated of the potential value of the integration of the
coagulation/flocculation, Advanced Oxidation Processes (AOP) (Fenton reagent) and slow
sand filtration technologies, with the aim of treating laboratory wastewater. The treatment
system was designed in laboratory scale through coagulation/flocculation. It involved the use
of Jar Test equipment with a sequence of two rotational phases: fast mixes to 300 rpm for 20
seconds and slow mixes to 30 rpm for 6 minutes and 10 seconds, with the addition of anionic
polymer and sedimentation for 60 minutes at ambient temperature. In the treatment via Fenton
reagent, two rotational phases were used: rapid mixing at 300 rpm for 20 seconds with the
addition of iron (Fe2+) and slow mixing at 30 rpm for 6 minutes and 10 seconds with the addition
of hydrogen peroxide, followed by 60 minutes of sedimentation at ambient temperature. A
cylindrical tank of polyvinyl chloride, sands and non-woven synthetic fabrics were used in the
slow filtration. The filtration rate adopted was 3 m3 m-2 d-1 with a hydraulic retention time of
264 minutes. The best concentrations of chemical reagents used in the treatments were:
0.80 mg L-1 of polymeric anionic, 200.00 mg L-1 of H2O2 and 13.00 mg L-1 of total soluble iron.
The integration of the treatment technologies made it possible to achieve a removal rate of
75.27% of COD and 94.12% of total phenols. Furthermore, the conjugation of the processes
allowed the removal of 87.58% of TOC.
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Coagulação/floculação, Cosméticos, Corantes têxteis, Cosmetics, Coagulation/flocculation, Textile dyes
Citação
PEREIRA, Chrystopher Allan Miranda; BRITO, Núbia Natália. Integration of treatment technologies with Fenton reagent for laboratory effluent remediation. Revista Ambiente & Água, Taubaté, v. 13, n. 5, e2243, 2018. DOI: 10.4136/ambi-agua.2243. Disponível em: https://www.scielo.br/j/ambiagua/a/qYsbLWtm8ZDFKc96MM9qmks/?lang=en. Acesso em: 10 jun. 2024.