ABSTRACT:The aim of this study was to evaluate the performance of Tifton 85 grass cultivated in soil columns and fertilized with different wastewater doses of swine slaughterhouse. The experiment was conducted in the Environmental Engineering Center and Sanitary of UFLA/MG in PVC columns filled with Dark Red Latosol (Oxisol) and randomly distributed. The treatments applied with nitrogen based load (300 kg ha de N years -1 ) consisted of four doses of SW and AQT0 control at random. Three cuts were performed, at 60, 90 and 120 days after planting. The highest yields were 10.06, 16.82 and 20.39 t ha -1 in AQT0, AAT4 and AAT3 treatments, respectively. With the increase of nutrients by N rates and root development of Tifton 85 grass, we observed higher extractions of N, P and K in the second and third cut, with maximum extraction of 384 and 10.3 kg ha -1 of N and P in the higher dose treatments (AAT4), while the maximum extraction of the potassium was 117.7 kg ha -1 in the AAT3 treatment. There was productivity restriction in the third cut due to the reduction of availability of essential nutrients and losses by leaching.

Abandoned canine on streets have been an increasing issue in the majority of Brazilian cities. In order to decrease this problem, many countries have created kennels, which are unities reserved to shelter dogs. The animal confinements produce a huge amount of solid and liquid waste in concentrated residues. There are only few studies about those residues. The kennel Parque Francisco de Assis, located in the municipality of Lavras, shelter about 400 dogs and it has an individual system of treatment, composed by grating and decanter, septic tanks with anaerobic filters (ST-ANF), and stabilization tanks for treatment of wastewater produced in the activity. The aim of this study was to evaluate the system of wastewater treatment of the kennel by the qualitative characterization through physical, chemical and biological analysis of the influent and effluent from the unities that are in the treatment system, thus obtaining the efficiency of the process. The average efficiency of the removal in the treatment system was approximately 65% of organic matter, 11% of nutrients and 59% of coliforms; therefore, it was featured as unsatisfactory to release according to the normative deliberation Copam/Cerh nº 01/2008, altering the conditions and standards of the stream in a negative way.Eficiência do sistema de tratamento de efluentes de canil RESUMO. Cães abandonados nas ruas têm se tornado um problema crescente na maioria das cidades brasileiras. Para amenizar o problema, muitos municípios têm criado os canis, unidades destinadas ao abrigo dos cães. O confinamento dos animais proporciona a geração de grande quantidade de resíduos sólidos e líquidos de forma concentrada. Tais resíduos são ainda pouco estudados. O canil parque Francisco de Assis, Lavras-MG abriga cerca de 400 cães e possui um sistema de tratamento individual, composto por grades e decantador, tanques sépticos seguidos de filtros anaeróbios (TS-FAN), e tanques de estabilização para tratamento das águas residuárias geradas na atividade. O objetivo deste trabalho foi avaliar o sistema de tratamento das águas residuárias do canil a partir da caracterização qualitativa, por meio de análises físicas, químicas e biológicas, do afluente e do efluente das unidades que compõem o sistema de tratamento, obtendo-se a eficiência do processo. A eficiência média de remoção no sistema de tratamento foi aproximadamente de 65% de matéria orgânica, 11% de nutrientes e 59% de coliformes, caracterizando-se como insatisfatórias, para os padrões de lançamento conforme deliberação normativa Copam/Cerh nº 01/2008, alterando as condições e padrões do ribeirão de forma negativa.Palavras-chave: cães; tratamento biológico; sistema tanque séptico-filtro anaeróbio; poluição.

ABSTRACT:The aim of this study was to evaluate the soil chemical properties submitted to fertigation with slaughterhouse (SW) and dairies (DW) wastewater. The experiment was conducted in the Environmental Engineering Center and Sanitary of UFLA/MG in PVC columns filled with Dark Red Latosol (Oxisol) and randomly distributed. The treatments applied with nitrogen based load (300 kg ha years -1 of N) consisted of four doses of SW and DW (100, 200, 300 and 400% of the recommendation) and AQT0 control at random. The soil was collected at a depth of 0.30 m and, subsequently, characterized in terms of physical, chemical and physicochemical. The application of treatment of the largest irrigation of DW provided, after 120 days of monitoring, N concentration of 1.85 g kg -1 . However, the treatment with AQT0 obtained N concentration of 0.81 g kg -1 , in the soil. We observed that the largest irrigation of SW provided increases of 2.62 and 5.49 g kg -1 , respectively, in the P and K concentrations of the soil. There was quadratic increase in the N concentration in the 0.30 m soil depth of the columns with the increase in the applied irrigations of SW and DW, being obtained maximum values of 1.85 and 1.02 g kg -1 that were obtained in the relative irrigation of the application dose of 600 kg ha -1 of N.