Inactivation of Clostridium perfringens, Total Coliforms, and Escherichia coli by UV/H2O2 in Wastewater Treatment Plant Effluent

Autor(es)

Guimaraes, Jose Roberto ^[1] ; Guadagnini, Regiane Aparecida ^[1] ; Bueno Franco, Regina Maura ^[2] ; dos Santos, Luciana Urbano ^{[1, 3]}

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Dept Sanitat & Environm, Sch Civil Engn Architecture & Urban Design, POB 6143, BR-13083889 Campinas, SP - Brazil

^[2] Univ Campinas UNICAMP, Inst Biol, Dept Anim Biol, Lab Protozool, POB 6109, BR-13083970 Campinas, SP - Brazil

^[3] Padre Anchieta Univ Ctr UNIANCHIETA, 100-140 Bom Jesus Pirapora St, BR-13207270 Jundiai, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES; v. 19, n. 1, p. 93-97, JAN 31 2016.
• Citações Web of Science: 2

Resumo

This study evaluated the effectiveness of H2O2, UV radiation, and H2O2/UV processes to inactivate total coliforms, Escherichia coli, and Clostridium perfringens bacteria present in a treated sewage. The samples were collected at Samambaia Waste Water Treatment Plant in Campinas, Brazil. The photochemical assays were carried out using 125-3,640 mJ cm(-2) doses of UV radiation. The initial H2O2 concentration was 30 mg L-1. The bacteria were quantified in samples of 100% raw effluent, which had an average of 1.1 x. 10(6) most probable number (MPN)/100 mL of total coliforms, 2.3 x 10(5) MPN/100 mL of E. coli, and 1.4 x 10(4) MPN/100 mL of C. perfringens after treatment with activated sludge. Peroxidation did not efficiently inactivate the measured bacteria. The UV process incurred 5-log inactivation for total coliforms and E. coli bacteria, whereas advanced oxidation processes (AOPs) inactivated both bacteria. UV radiation and AOP incurred a 2-log inactivation of C. perfringens. (AU)

• Processo FAPESP: 12/50522-0 - Contaminação ambiental pelos protozoários Giardia spp. e Cryptosporidium spp. e por Ascaris suum: desafios de detecção, remoção e inativação das formas infectantes
• Beneficiário: Regina Maura Bueno Franco
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 10/15550-8 - Processo Oxidativo Avançado na desinfecção de esgoto tratado: helmintos, protozoários e bactérias
• Beneficiário: Regiane Aparecida Guadagnini
• Modalidade de apoio: Bolsas no Brasil - Doutorado