Performances of two pilot decentralized wastewater treatment plants used to treat low-strength wastewater

Autor(es)

da Silva, Julliana Alves ^[1] ; Sarti, Arnaldo ^[2] ; Ribeiro da Silva, Gustavo Henrique ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Coll Engn Bauru, Dept Civil & Environm Engn, Av Eng Luiz Edmundo Carrijo Coube 14-01, BR-17033360 Bauru, SP - Brazil

^[2] Univ Estadual Paulista, UNESP, Inst Chem, Dept Biochem & Chem Technol, Campus Araraquara, Rua Prof Francisco Degni 55, BR-14800900 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Desalination and Water Treatment; v. 91, p. 93-100, OCT 2017.
• Citações Web of Science: 0

Resumo

The performances of an anaerobic/aerobic baffled reactor (AABR) and a horizontal subsurface flow constructed wetlands (HFCW) have been investigated. In this study, both systems were operated in parallel using the same source of domestic low-strength wastewater (0.06-0.61 kg COD m(3) d(-1)). The inlet concentrations, expressed as chemical oxygen demand (COD), ranged from 105 to 381 mg COD L-1. The outlet concentrations ranged from 12 to 147 mg COD L-1 in the AABR and from 7 to 88 mg COD L-1 in the HFCW. The AABR and HFCW achieved 78% +/- 9% and 82% +/- 9% COD average removal rates, respectively. To compare the results, a statistical test (significance level of 0.05) was used and showed no significant difference between the systems in terms of organic matter and total suspended solids (TSS) removal. In addition, this study addressed energy costs and treatment capacity per area for both wastewater treatment systems that were studied independently with capacities for 20 habitants, and showed lower energy consumptions per month when compared with a domestic electric shower generally used by a sample Brazilian family consisting of four members. (AU)

• Processo FAPESP: 10/12445-9 - Estudo da eficiência do sistema alagados construídos na remoção da matéria orgânica e nitrogênio de águas residuárias
• Beneficiário: Eduardo Luiz de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/10816-2 - Desinfecção de efluentes utilizando cloro, ozônio, ozônio/cloro e ozônio/peróxido de hidrogênio
• Beneficiário: Gustavo Henrique Ribeiro da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular