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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Microbiological composition of sludge generated in water treatment plants

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Author(s):
Lady Daiane Pereira Leite [1] ; Isabela Maria Martins [2] ; Suzelei Rodgher [3] ; Vivian Silveira dos Santos Bardini [4] ; Luis Miguel Gutiérrez Klinsky [5] ; Cristiane Yumi Koga Ito [6] ; Fabiana Alves Fiore [7]
Total Authors: 7
Affiliation:
[1] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto de Ciência e Tecnologia. Programa de Pós-Graduação em Ciências Aplicadas à Saúde Bucal - Brasil
[2] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto de Ciência e Tecnologia. Departamento de Engenharia Ambiental - Brasil
[3] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto de Ciência e Tecnologia. Departamento de Engenharia Ambiental - Brasil
[4] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto de Ciência e Tecnologia. Departamento de Engenharia Ambiental - Brasil
[5] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto CCR Nova Dutra. Centro de Pesquisas Rodoviárias - Brasil
[6] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto de Ciência e Tecnologia. Programa de Pós-Graduação em Ciências Aplicadas à Saúde Bucal - Brasil
[7] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto de Ciência e Tecnologia. Departamento de Engenharia Ambiental - Brasil
Total Affiliations: 7
Document type: Journal article
Source: Rev. Ambient. Água; v. 18, 2023-10-23.
Abstract

Abstract Studies that focus on the microbiological composition of water treatment plants (WTP) sludge, as well as its pathogenicity, are extremely necessary, especially with regard to environmental regulations, where the microbiological characterization of WTP waste can encourage new policies related to its management. In Brazil, few studies address WTP sludge, which, in general, is classified as non-hazardous and non-inert waste, with the microbiological characterization of this material being little explored. This case study performed the microbiological characterization of sludge samples from two WTPs located in the state of São Paulo, before and after the centrifugation process. The determination of microbial density and morphology, Gram staining, and the identification of the presence of total and thermotolerant coliforms were performed with samples produced in two different years, in WTPs that used different coagulants (liquid aluminum sulfate or polyaluminum chloride and ferric chloride). Results were evaluated along with the physicochemical analysis of the composition of this waste. The presence of microalgae and protozoa in non-centrifuged WTP sludge and the presence of total and thermotolerant coliforms in WTP sludge before and after centrifugation are among the main results of this study. (AU)

FAPESP's process: 18/00099-0 - EVALUATION OF THE VIABILITY OF SLUDGE USAGE FROM THE WATER TREATMENT PLANT IN THE BASE AND SUB-BASE OF PAVEMENTS, IN SÃO PAULO' STATE.
Grantee:Fabiana Alves Fiore Pinto
Support Opportunities: Regular Research Grants