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Revista Ambiente & Água

versão On-line ISSN 1980-993X

Resumo

MIERZWA, José Carlos; SUBTIL, Eduardo Lucas  e  HESPANHOL, Ivanildo. UV/H2O2 process performance improvement by ultrafiltration and physicochemical clarification systems for industrial effluent pretreatment. Rev. Ambient. Água [online]. 2012, vol.7, n.3, pp.31-40. ISSN 1980-993X.  https://doi.org/10.4136/ambi-agua.926.

The present study evaluated the removal of TOC from an effluent with high organic load resulted from the treatment of oil-water emulsion by thermal process. Hollow Fiber Ultrafiltration membrane (HF-UF) and physicochemical clarification process were used as pretreatment options to assess the influence of feed effluent quality on the UV/H2O2 oxidation process. Results for TOC removals showed HF-UF and physicochemical clarification processes can significantly improve the efficiency of UV/H2O2 oxidation process, when compared with the direct effluent oxidation. Reaction time for obtaining a TOC removal higher than 90% was reduced to approximately half of the time needed when no pretreatment was applied. Considering both pretreatment processes it was not possible to notice any significant difference on the UV/H2O2 oxidation process performance. However, the complexity of physicochemical process due to the use of three different chemicals and sludge production made the HF-UF process the best pretreatment alternative, without increasing the Total Dissolved Solids of the effluent, a very important issue when water reuse is considered.

Palavras-chave : UV/H2O2; ultrafiltration; physicochemical process.

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