Consulta: subjectFacets:"Nutrients removal"
Registros recuperados: 2
Data/hora: 09/06/2024 07:38:08

Technical and economic feasibility of gradual concentric chambers reactor for sewage treatment in developing countries
Provedor de dados: Electronic Journal of Biotechnology
Autores: Mendoza,Lourdes; Carballa,Marta; Sitorus,Berlian; Pieters,Jan; Verstraete,Willy.
A major challenge in developing countries concerning domestic wastewaters is to decrease their treatment costs. In the present study, a new cost-effective reactor called gradual concentric chambers (GCC) was designed and evaluated at lab-scale. The effluent quality of the GCC reactor was compared with that of an upflow anaerobic sludge bed (UASB) reactor. Both reactors showed organic matter removal efficiencies of 90%; however, the elimination of nitrogen was higher in the GCC reactor. The amount of biogas recovered in the GCC and the UASB systems was 50% and 75% of the theoretical amount expected, respectively, and both reactors showed a slightly higher methane production when the feed was supplemented with an additive based on vitamins and minerals....
Tipo: Journal article
Palavras-chave: Developing countries; Mesophilic; Nutrients removal; Reactor design; Sewage.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000200007

Anaerobic-aerobic treatment of swine wastewater in uasb and batch reactors in series
Provedor de dados: Engenharia Agrícola
Autores: Urbinati,Estevão; Oliveira,Roberto Alves de.
In this work it was evaluated the performance of two systems of swine wastewater treatment consisting of two-stage upflow anaerobic sludge blanket (UASB) reactors, with and without post-treatment in sequencing batch reactor (SBR), fed continuously, with aerobic phase. The UASB reactors in the first stage had 908 L in the sets I and II, and in the second stage 350 and 188 L, respectively. In the set II the post-treatment was performed in a SBR of 3,000 L. The hydraulic detention times in the anaerobic treatment systems were 100, 75 and 58 h in the set I; 87, 65 and 51 h in the set II; and 240 and 180 h in the SBR. The volumetric organic load applied in the first stage UASB reactors ranged from 6.9 to 12.6 g total COD (L d)-1 in the set I and 7.5 to 9.8 g...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coliforms; Methane; Two-stage anaerobic reactors; Nutrients removal; Combined treatment.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100014