Performance of sewage treatment plant with septic tank, anaerobic filter and constructed wetland with Typha spp

• Autor(a) principal: Neto, Paulo Fortes
• Data de Publicação: 2019
• Outros Autores: Fortes, Nara Lucia Perondi, Duarte, Elizabeth de Almeida, Fragoso, Rita do Amaral, Henriques, Ana Catarina Marcos, Lopes, Sofia Helena Lewis, Pereira, Luiza Fernanda dos Santos
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.5/20293
• topic: constructed wetland; macrophytes; nutrient removal; Typha

The study reports the performance of a sanitary effluent treatment constituted by a septic tank, anaerobic filter and constructed wetland. The study monitored nutrient’s, carbonaceous material’s and thermotolerant coliform’s (CT) removal efficiency during 12 months. The treatment system included a septic tank, an anaerobic filter and a horizontal subsurface flow constructed wetland cultivated with Typha spp. Effluent samples were monthly collected before and after the septic tank, anaerobic filter and wetland. The removal efficiency for N-NH+4 was 37.6%, 66.3% for total P, 37% for COD, 54% for BOD and 99.4% for CT. The anaerobic filter and wetland were more efficient than the septic tank. P-total reduction was higher in the constructed wetland than in the anaerobic filter. Climatic conditions influenced the evaluated constituent’s removal being the highest values during hot months