Water and Wastewater Disinfection with Peracetic Acid and UV Radiation and Using Advanced Oxidative Process PAA/UV

The individual methods of disinfection peracetic acid (PAA) and UV radiation and combined process PAA/UV in water (synthetic) and sanitary wastewater were employed to verify the individual and combined action of these advanced oxidative processes on the effectiveness of inactivation of microorganisms indicators of fecal contamination E. coli, total coliforms (in the case of sanitary wastewater), and coliphages (such as virus indicators). Under the experimental conditions investigated, doses of 2, 3, and 4 mg/L of PAA and contact time of 10 minutes and 60 and 90 s exposure to UV radiation, the results indicated that the combined method PAA/UV provided superior efficacy when compared to individual methods of disinfection.

[1]  S. Campos,et al.  Evaluation of the Physical–Chemical Characteristics of Wastewater After Disinfection with Peracetic Acid , 2013, Water, Air, & Soil Pollution.

[2]  Jeanette Beber de Souza,et al.  Avaliação do emprego da radiação ultravioleta na desinfecção de esgoto sanitário , 2012 .

[3]  Jeanette Beber de Souza,et al.  Utilização do ácido peracético na desinfecção de esgoto sanitário: uma revisão , 2012 .

[4]  Juliana Nascimento da Costa.  Avaliação ecotoxicológica de efluente de tratamento secundário de esgoto sanitário após desinfecção com ácido peracético, cloro, ozônio e radiação ultravioleta , 2007 .

[5]  C. Neto,et al.  Tratamento de esgotos domésticos. Introdução à qualidade das águas e ao tratamento de esgotos , 2006 .

[6]  Jeanette Beber de Souza.  Avaliação de métodos para desinfecção de água, empregando cloro, ácido peracético, ozônio e o processo de desinfecção combinado ozônio/cloro , 2006 .

[7]  L. Daniel,et al.  Comparação entre hipoclorito de sódio e ácido peracético na inativação de E. coli, colifagos e C. perfringens em água com elevada concentração de matéria orgânica , 2005 .

[8]  H. Heinonen‐Tanski,et al.  Inactivation of enteric microorganisms with chemical disinfectants, UV irradiation and combined chemical/UV treatments. , 2005, Water research.

[9]  Mehmet Kitis,et al.  Disinfection of wastewater with peracetic acid: a review. , 2004, Environment international.

[10]  P. Payment,et al.  Disinfection efficiency of peracetic acid, UV and ozone after enhanced primary treatment of municipal wastewater. , 2003, Water research.

[11]  C. Lubello,et al.  Wastewater disinfection with PAA and UV combined treatment: a pilot plant study. , 2003, Water research.