Integration of treatment technologies with Fenton reagent for laboratory effluent remediation
Nenhuma Miniatura disponível
Data
2018
Autores
Pereira, Chrystopher Allan Miranda
Brito, Núbia Natália de
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
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.
Descrição
Palavras-chave
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.