Efeito Da Taxa De Aeração No Desempenho De Alagados Construídos Aerados Intermitentemente
| Autor: | Queluz, João Gabriel Thomaz [UNESP], Yabuki, Lauren Nozomi Marques [UNESP], Garcia, Marcelo Loureiro [UNESP] |
|---|---|
| Přispěvatelé: | Universidade Estadual Paulista (UNESP) |
| Jazyk: | portugalština |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2022-05-01T08:15:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-03-31 The aim of the present work was to evaluate the effect of different aeration rates on the removal of total nitrogen (TN) and chemical oxygen demand (COD) in intermittently aerated horizontal subsurface flow constructed wetlands (HFCW). Four pilot-scale HFCWs were evaluated using different aeration rates (0, 2, 5, and 10 L min-1) with a fixed intermittent aeration interval of 3 h d-1 (1 h with aeration 7 h without aeration). The HFCWs received 8.6 L d-1 of synthetic effluent, resulting in a hydraulic retention time of 3 days. The results show that intermittently aerated HFCWs were highly efficient in removing COD (>97%), TN (>80%) and NH4+ (>97%), while the HFCW without aeration showed lower efficiencies in the removal of COD (93.9%), TN (48.8%), and NH4+ (57.7%). In addition, the results also show that the three intermittently aerated HFCW achieved similar performance in the removal of COD, TN, and NH4+. Finally, the results indicate that intermittent aeration allows the simultaneous occurrence of nitrification and denitrification, thus improving the performance of HFCW in removing TN. However, the use of different aeration rates does not alter COD and TN removal efficiencies. Instituto de Geociências e Ciências Extas Universidade Estadual Paulista, Avenida 24 A, 1515 Instituto de Geociências e Ciências Extas Universidade Estadual Paulista, Avenida 24 A, 1515 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|