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Type: Artigo de periódico
Title: Detection Of Cryptosporidium Spp. Oocysts And Giardia Spp. Cysts In Raw And Effluent Wastewater: Critical Evaluation Of Methods [detecção De Oocistos De Cryptosporidium Spp. E Cistos De Giardia Spp. Em Amostras De Esgoto Bruto Ou Tratado: Avaliação Crítica Dos Métodos]
Author: dos Santos L.U.
Neto R.C.
Franco R.M.B.
Guimaraes J.R.
Abstract: In this study, the efficiency of centrifuge-concentration and membrane filtrated methods was evaluated in the detection of Cryptosporidium spp. oocysts and Giardia spp. cysts in raw or treated wastewater samples, from activated sludge systems (ETE - Samambaia, Campinas, in São Paulo). The samples were collected once a fortnight for two years: 53 samples of influent (AFL), 53 samples of treated effluent without ultraviolet disinfection (EFL), and 38 samples of treated effluent with ultraviolet disinfection (EFL+UV). Giardia spp. cysts were found in 90.5% of the AFL samples; in 96.2% of the samples, EFL; and in 94.7%, EFL+UV. Cryptosporidium spp. oocysts were detected in 6.4% of AFL samples and 2.6% of EFL+UV. Both methods showed efficiency when detecting protozoa in all types of samples, besides having low costs by analysis.
Citation: Engenharia Sanitaria E Ambiental. , v. 16, n. 2, p. 115 - 120, 2011.
Rights: aberto
Identifier DOI: 10.1590/S1413-41522011000200003
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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