Consulta: subjectFacets:"Domestic sewage"
Registros recuperados: 5
Data/hora: 05/06/2024 01:18:17

Tratamento de efluentes por leito cultivado: Sistema para pequenas comunidades
Provedor de dados: 25
Autores: Santos, Roberto José dos; Fortes Neto, Paulo; Batista, Getulio Teixeira.
Resumo: A pesquisa teve como base o trabalho de campo desenvolvido nas dependências do Viveiro de Plantas Municipal de Jacareí, Estado de São Paulo, Brasil. Foi projetado um sistema constituído por fossa séptica e leito cultivado, com objetivo de solucionar os problemas dos esgotos gerados pelas comunidades rurais e das periferias de áreas urbanas. O sistema foi dimensionado para fazer o tratamento de esgotos gerado por 40 pessoas, funcionários e visitantes. O projeto é constituído de duas unidades, fossa séptica e leito cultivado. O efluente gerado na fossa séptica foi direcionado para o leito cultivado, formado por duas camadas, uma de brita e outra, de areia, sendo que na camada de brita foram plantadas 50 mudas de espécie Zantedeschia aethiopica L. O...
Tipo: Article
Palavras-chave: Coliformes; Efluentes; Esgoto doméstico; Leito cultivado; Domestic sewage; Effluents.
Ano: 2011
URL: http://hdl.handle.net/2315/177

Genotoxicity evaluation of domestic sewage in a municipal wastewater treatment plant
Provedor de dados: 74
Autores: Grisolia,Cesar Koppe; Oliveira,Adriano Barros Barata de; Bonfim,Helder; Klautau-Guimarães,Maria de Nazaré.
An evaluation of the genotoxicity of domestic sewage was carried out in a municipal wastewater treatment plant. The study was carried out using Allium cepa root tip cells through cytological parameters such as aberrant cells in anaphase-telophase and the mitotic index, and the fish species Oreochromis niloticus and Tilapia rendalli, through the index of micronuclei in peripheral erythrocytes. In the Allium test, each of the four stages of the wasterwater treatment routine was analyzed, i.e., crude sewage, primary effluent, secondary effluent, and tertiary effluent. O. niloticus and T. rendalli specimens were maintained in an aquarium continuously receiving the final effluent, in an open system, before being discharged into Lake Paranoá. For micronuclei...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium cepa; Biomonitoring; Domestic sewage; Fish; Micronuclei; Mutagenicity.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200026

Remoción de formas parasitarias intestinales en una laguna facultativa de estabilización en Lima, Perú
Provedor de dados: 104
Autores: Iannacone,José O.
The effectiveness of a waste stabilization pond, to remove intestinal helminth eggs and protozoan cysts was studied in San Martin de Porres, Lima, Peru. From September to October 2000 four collections of samples were performed from raw domestic wastewater and from contends of primary, secondary and tertiary ponds. A comparative study of performance of the concentrations methods of Ritchie and Faust was also done. The overall average removal of parasitic forms was as follow: 69.37% from raw water and primary pond; 48.34% from primary to secondary pond; 85.45% from secondary to tertiary pond and 97.69% from raw water to tertiary pond. There was no significant difference in the quantitative performance of Ritchic and Faust methods. Giardia duodenalis (Lambl,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultúralland; Ascaris lumbricoides; Domestic sewage; Entamoeba coli; Giardia duodenalis; Peru.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400007

Morphological study of biomass during the start-up period of a fixed-bed anaerobic reactor treating domestic sewage
Provedor de dados: 52
Autores: Lima,Cláudio Antonio Andrade; Ribeiro,Rogers; Foresti,Eugenio; Zaiat,Marcelo.
This work focused on a morphological study of the microorganisms attached to polyurethane foam matrices in a horizontal-flow anaerobic immobilized biomass (HAIB) reactor treating domestic sewage. The experiments consisted of monitoring the biomass colonization process of foam matrices in terms of the amount of retained biomass and the morphological characteristics of the cells attached to the support during the start-up period. Non-fluorescent rods and cocci were found to predominate in the process of attachment to the polyurethane foam surface. From the 10th week of operation onwards, an increase was observed in the morphological diversity, mainly due to rods, cocci, and Methanosaeta-like archaeal cells. Hydrodynamic problems, such as bed clogging and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaerobic digestion; Biofilm; Domestic sewage; Fixed-bed reactor; Polyurethane foam.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600020

Use of Coffee Capsules as Support Material in Upflow Anaerobic Fixed Bed Reactors
Provedor de dados: 52
Autores: Souza,Gabriela Rezende de; Oliveira,Luiz Fernando Coutinho de; Bello,Italoema Pinheiro; Siniscalchi,Luciene Alves Batista; Fia,Ronaldo; Gandia,Rômulo Marçal.
Abstract The aim of this work is to evaluate the performance of upflow anaerobic fixed bed reactors filled with espresso coffee capsules to treat sanitary sewage. Three reactors (R1, R2 and R3) were constructed in blue PVC pipes measuring 30 cm height and 150 mm diameter and filled with coffee capsules made of aluminum and plastic. The sewage from the pre-treatment phase of the wastewater treatment plant of the Federal University of Lavras fed the system. Temperature, pH, alkalinity and volatile acids concentration, COD, TS, TVS and TSS of the influent and effluent were analyzed to evaluate the reactors performances. Statistics tests were run in the software Statistica 10. Changes occurred in the organic loading rates caused two different operating phases,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaerobic filter; Biomass; Immobilization; Support material; Domestic sewage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100223