info:eu-repo/semantics/article
Small-Scale Wetland Model for Synthetic Sewage Treatment
Wetland construído de bancada para tratamento de esgoto sintético
Registro en:
10.5902/2179460X68834
Autor
Kuriki, Mikaele Silva
Santos, Francisco Lledo
Poleto, Cristiano
Institución
Resumen
With the demand for electricity growing, the migration to renewable sources is a reality. In distributed generation, photovoltaic systems are a renewable and sustainable alternative to the main energy sources to generate electricity. Monitoring a photovoltaic system over its operating time guarantees its good performance. This requires solar radiation and temperature data measured at the installation site or the use of solarimetric stations databases. However, the differences between the results simulated with databases and with data measured at the installation site are not widely known, which would be the ideal case from a technical point of view. The aim of this study was to verify the feasibility of monitoring the performance of a 2.5 kWp photovoltaic system located in the city of Porto Alegre - Brazil using the System Advisor Model (SAM) modeling tool and a public database. Simulation results were compared using data provided by a station of the National Institute of Meteorology (INMET) with the results obtained with data measured at the site of the photovoltaic system. Differences were verified between the solar radiation measured on site and that of the INMET database, and the difference in accumulated radiation was 9.2% for the entire period analyzed. When comparing the measured and simulated alternating current energy using the radiation and temperature data measured on site for the non-shading time, it was found that the difference between the results was 0.5%. Using the INMET climate file, the monthly differences ranged from -6% to 14% and the difference in accumulated energy for the entire measurement period was 2.5%. The results showed that the use of a database measured by a public solarimetric station close to the site, in this case approximately 6 km away from the installation, is feasible for monitoring photovoltaic systems, since the differences found were not significant. This monitoring can identify system failures and performance loss over time. O presente trabalho tem o objetivo de verificar a eficiência de um Wetland Construído de bancada para o tratamento de esgoto sintético. O experimento foi composto por três sistemas em série, onde cada sistema era composto por um WC sem saturação (F1A, F2A e F3A), estes ficam na parte superior da bancada do laboratório, e por um segundo WC (F1B, F2B, F3B), com saturação que ficava na parte inferior da bancada. Ainda foram desenvolvidos sistemas com a presença de macrófitas (Cyperus alternifolius) (FM1B, FM2B e FM3B), implantadas apenas nos sistemas com saturação, para comparação entre eles. Nesse sentido, verificou-se que o esgoto sintético obteve redução significativa nos parâmetros de DQO (71,74%), DBO (29,09%), Nitrogênio Amoniacal (87,15%), Fósforo Total (88,77%), Nitrato (82,85%), Nitrito (76,71%) e Sólidos Suspensos Totais (94,02%), após sua percolação pelo sistema de WC. Através de análises de variância de uma via (ONE-WAY ANOVA), seguido do teste Post Hoc de Tukey, constatou-se que o parâmetro em que houve redução menos significativa no sistema foi o de DBO, não ocorrendo diferenças significativas entre os sistemas sem e com macrófitas. Assim, foi possível avaliar que o sistema proposto contribuiu de forma positiva nos parâmetros analisados, confirmando sua eificiencia frente ao tratamento de esgoto sintético.