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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Aspectos SanitÃrios e AgronÃmicos do Uso de Esgotos Tratados na IrrigaÃÃo do Capim TanzÃnia (Panicum Maximum Jacq. Cv. TanzÃnia)-Aquiraz, CearÃ. / Sanitary and Agronomic Aspects of the use of treated wastewater in the Irrigation of TanzÃnia grass (Panicum maximum Jacq. cv. TanzÃnia) - Aquiraz, CearÃ.

Regis Meireles Benevides 09 August 2007 (has links)
nÃo hà / Nesta pesquisa procurou-se avaliar os aspectos sanitÃrios e agronÃmicos da utilizaÃÃo de esgotos tratados na irrigaÃÃo do capim TanzÃnia (Panicum Maximum Jacq. cv. TanzÃnia). Os experimentos foram realizados no Centro de Pesquisa sobre Tratamento de Esgotos e ReÃso de Ãguas da Companhia de Ãgua e Esgoto do Cearà em Aquiraz, CearÃ. A cultura de capim TanzÃnia foi irrigada com Ãgua de poÃo e esgoto tratado adubado com diferentes dosagens de fertilizante. Foi utilizado o mÃtodo de irrigaÃÃo por microaspersÃo, dividida em blocos, e aplicados quatros tratamentos diferentes. Os tratamentos utilizados foram: irrigaÃÃo com Ãgua de poÃo (T1), irrigaÃÃo com esgoto tratado (T2), irrigaÃÃo com esgoto tratado mais adubaÃÃo completa recomendada (T3) e irrigaÃÃo com esgoto tratado mais metade da adubaÃÃo recomendada (T4). Foram realizadas anÃlises fÃsico-quÃmicas e microbiolÃgicas na Ãgua do poÃo e no efluente da Ãltima lagoa de estabilizaÃÃo da EstaÃÃo de Tratamento de Esgoto (ETE) de Aquiraz, utilizados na irrigaÃÃo, onde se constatou diferenÃas significativas, mas os valores encontravam-se dentro de nÃveis aceitÃveis para esse uso. Na cultura do capim TanzÃnia foi coletada amostras para as anÃlises microbiolÃgicas e quÃmico-bromatolÃgicas. Os resultados das anÃlises microbiolÃgicas no capim TanzÃnia apresentaram valores aceitÃveis em todos os tratamentos aplicados. Observou-se um decaimento menor da presenÃa de microorganismos patogÃnicos no tratamento irrigado com esgoto mais adubaÃÃo completa recomendada (T3). A qualidade para consumo e digestibilidade do capim TanzÃnia pelos animais foi avaliada por meio das anÃlises quÃmico-bromatolÃgicas, com base em parÃmetros como: matÃria seca (MS), proteÃna bruta (PB), extrato etÃreo (EE), resÃduo mineral (RM), fibra em detergente Ãcido (FDA) e fibra em detergente neutro (FDN). Os tratamentos irrigados com esgoto tratado (T2, T3 e T4) apresentaram valores melhores que o tratamento irrigado com Ãgua do poÃo (T1). / This research evaluated the sanitary and agronomic aspects of the use of treated wastewater in the irrigation of TanzÃnia grass (Panicum maximum Jacq. cv. TanzÃnia). The experiments had been carried through in the Center of Research on Wastewater Treatment and Reuse of the Company of Water and Wastewater of the Cearà in Aquiraz, CearÃ. The culture of TanzÃnia grass was irrigated with water of well and treated wastewater with different dosages to fertilizer. The method of irrigation for microaspersion, divided was used block-type, and applied four different treatments. The used treatments had been: irrigation with well water (T1), irrigation with treated wastewater (T2), irrigation with treated wastewater more complete fertilization recommended (T3) and to irrigation with treated wastewater more half to the recommended fertilization (T4). Analyses had been carried through physicist-chemistries and microbiological in the water of the well and the effluent one of the last lagoon of stabilization of the Station of Wastewater Treatment (ETE) of Aquiraz, used in the irrigation, where if it contacted significant differences, but the values met inside of acceptable levels for this use. In the culture of TanzÃnia grass it was collected samples for the microbiological analyses and chemical and bromatologic. The results of the microbiological analyses in TanzÃnia grass had presented acceptable values in all the applied treatments. A lesser decline of the presence of pathogenic microorganisms in the treatment irrigated with wastewater more recommended complete fertilization (T3) was observed. The quality for consumption and digestibility of TanzÃnia grass for the animals was evaluated by means of chemical and bromatologic analysis, on the basis of parameters as: dry substance (MS), rude protein (PB), etereo extract (EE), mineral residue (RM), fiber in acid detergent (FDA) and fiber in neutral detergent (FDN). The treatments irrigated with treated wastewater (T2, T3 and T4) had presented better values that the treatment irrigated with water of the well (T1).

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