Avaliação Do Potencial De Reuso Agrícola Do Efluente De Uma Estação De Tratamento De Esgoto Com Alagados Construídos

Content Provider	Semantic Scholar
Author	Giafferis, Giselda Passos Barros, Zacarias Xavier De Oliveira, Eduardo Luiz De
Copyright Year	2011
Abstract	A pesquisa foi realizada na estacao de tratamento do Departamento de Agua e Esgoto de Bauru, localizada no Distrito de Tibirica, com vazao media na entrada da estacao de 4,8L/s, composta por filtro anaerobio de fluxo ascendente, seguido de sistemas de alagados construidos em paralelo. Como objetivo deste trabalho, avaliou-se a eficiencia dos tres sistemas de alagados construidos, com tipos de plantas diferentes (Lirio do charco, Papiro gigante e Taboa) e analisou-se quantitativa e qualitativamente, os efluentes nas varias etapas do processo de tratamento, para verificar suas eficiencias e a possibilidade de reuso do efluente final na agricultura. Diante dos resultados obtidos, observou-se que houve satisfatoria remocao de materia orgânica, com concentracao media de 36 e 39 mg/L, nas Fases 1 e 2 de operacao, respectivamente. Constatou-se que as concentracoes de nutrientes, como nitrogenio e fosfato foram altas em todo o sistema e a eficiencia de remocao de nitrogenio amoniacal esteve muito abaixo do esperado, concluindo que o sistema de alagados esta funcionando como tratamento secundario e nao como terciario. As concentracoes de micro-organismos encontrados no efluente final foram elevadas. Portanto, conclui-se que os resultados de eficiencia de remocao da materia orgânica, dos sistemas de alagados construidos atendem aos parâmetros exigidos pelas legislacoes para lancamentos de efluentes e nao atendem para nitrogenio e micro-organismos, mas se adequam para fins de reuso na irrigacao restrita na agricultura. PALAVRAS-CHAVE: Alagados construidos, tratamento de esgoto, wetlands construidos, reuso. EVALUATION OF THE AGRICULTURAL REUSE POTENTIAL OF A SEWAGE TREATMENT PLANT BUILT WITH CONSTRUCTED WETLANDS EFFLUENT. ABSTRACT: The study took place in a sewage treatment plant located at the actual Department of Water and Sewer in Bauru, city of Sao Paulo state. This treatment plant has an average entrance flow of 4.8 l. s-1 made by upflow anaerobic filter, followed by wetland systems constructed in parallel. . As objective of this study we evaluate the effectiveness of three systems of constructed wetlands, with three different types of plants (Lily pond, Giant papyrus and Cattail),quantify, and qualify the effluents at various stages of treatment to monitor their effectiveness and the possibility of reuse in agriculture. There was a satisfactory removal of organic matter, with a mean concentration of 36 and 39mg.l-1 at the , phases 1 and 2 of the operation, respectively. The constructed wetlands effluent nitrogen and phosphate concentrations were high throughout all the system and the removal efficiency of ammonia nitrogen was much lower than expected, then the system is functioning as secondary treatment and not as tertiary treatment. The concentrations of micro-organisms found in the final effluent were also high. Therefore, it is concluded that the results of removal efficiency of organic matter, of constructed wetland systems, meet the parameters required by legislation for effluent discharges but do not attend the parameters required for nitrogen and micro –organisms. This way, these analyzed plants effluents are suitable for reuse in agriculture restricted irrigation KEYWORDS: Constructed wetlands,wetlands, sewage treatment, reuse.
Starting Page	48
Ending Page	56
Page Count	9
File Format	PDF HTM / HTML
DOI	10.17224/EnergAgric.2014v29n1p48-56
Volume Number	29
Alternate Webpage(s)	http://irriga.fca.unesp.br/index.php/energia/article/download/604/943
Alternate Webpage(s)	http://www.pg.fca.unesp.br/Teses/PDFs/Arq0732.pdf
Alternate Webpage(s)	https://repositorio.unesp.br/bitstream/handle/11449/101958/giafferis_gp_dr_botfca.pdf;jsessionid=90743C372BAF7D4A1525144659CF3263?sequence=1
Alternate Webpage(s)	https://doi.org/10.17224/EnergAgric.2014v29n1p48-56
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article