Evaluation of the recirculation process of aerobic sludge from a percolating biological filter in an upflow anaerobic sludge blanket digestion reactor, with characterization of sludge solids

Autor:	Fernando Zilli Gomiero, Julia Carnelós M. Velho, Marco A. Knopik, Luiz Felipe Machado Velho, José Eduardo Gonçalves
Přispěvatelé:	Universidade Cesumar – UniCesumar – Mestrado em Tecnologias Limpas – Ciências Ambientais, Universidade Estadual Paulista (UNESP), UniCesumar, Universidade Estadual de Maringá (UEM), Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais – PEA
Rok vydání:	2021
Předmět:	Sewage treatment Upflow anaerobic sludge blanket digestion Chemistry Percolating biological filter Scientific method Hydraulic load Biological filter Percolator filter Upflow anaerobic sludge blanket Treatment plant efficiency Sludge characterization and stability Pulp and paper industry
Zdroj:	Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP
DOI:	10.5004/dwt.2021.27534
Popis:	Made available in DSpace on 2022-04-28T19:45:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-09-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) In this work, the sustainability indicators from a sewage treatment plant in a Southern Brazilian city, with a combined system of anaerobic treatment by upflow anaerobic sludge blanket (UASB) reactor and aerobic treatment with a percolating biological filter (PBF), were assessed. The need for the process of recirculation and anaerobic digestion of excess sludge in upflow anaerobic sludge blanket digestion (UASB) reactors and the influence of this procedure on the efficiency of each treatment step were evaluated. The production and volume of sludge produced in the treatment units were also calculated for periods with and without the recirculation of the sludge. The sludge characterization results showed values of 4.7% for total solids (TS) and 65% for total volatile solids (TVS) for the UASB reactor sludge, and 2.9% TS and 69% TVS for the PBF sludge. The efficiency of the effluent treatment by the combined system UASB + PBF + desiccator remained stable for both periods analyzed and was 85% for chemical oxygen demand, 88% for biological oxygen demand and 89% for total suspended solids. Finally, it was shown that these results are similar to those obtained for the activated sludge system, but the combined system has the advantage of being more sustainable. Universidade Cesumar – UniCesumar – Mestrado em Tecnologias Limpas – Ciências Ambientais, Av. Guedner, 1610 Universidade Estadual Paulista Júlio de Mesquita Filho – UNESP – FCL Assis SP. Department of Biotechnology, Av. Dom Antônio 2100 Instituto Cesumar de Ciência Tecnologia e Inovação – ICETI UniCesumar, Av. Guedner, 1610 Universidade Estadual de Maringá. Núcleo de Pesquisas em Limnologia Ictiologia, Av. Colombo 5790 Aquicultura – NUPELIA Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais – PEA, Av. Colombo 5790 Universidade Estadual Paulista Júlio de Mesquita Filho – UNESP – FCL Assis SP. Department of Biotechnology, Av. Dom Antônio 2100
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35c5ac235072050eeacc6a9bf3b22f49 https://doi.org/10.5004/dwt.2021.27534 Zobrazit plný text záznamu