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

Paulo Fortes Neto, Nara Lucia Perondi Fortes, Elizabeth da Costa Neves Fernandes de Almeida Duarte, Rita do Amaral Fragoso, Ana Catarina Marcos Henriques, Sofia Helena Lewis Lopes, Luiza Fernanda dos Santos Pereira

Abstract


  

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.


Keywords


constructed wetland, macrophytes, nutrient removal



DOI: http://dx.doi.org/10.4136/ambi-agua.2305

Revista Ambiente & Água. ISSN:1980-993X DOI:10.4136/1980-993X


Editoração:Apoio:Filiada à ABEC:
IPABHi CAPES CNPq ABEC