Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-11-07T16:36:09Z No. of bitstreams: 1 2016 - Gilda Vieira de Almeida.pdf: 1316919 bytes, checksum: c03bdccc4b150c7dd6900dacd899cb3d (MD5) / Made available in DSpace on 2017-11-07T16:36:09Z (GMT). No. of bitstreams: 1 2016 - Gilda Vieira de Almeida.pdf: 1316919 bytes, checksum: c03bdccc4b150c7dd6900dacd899cb3d (MD5) Previous issue date: 2016-02-29 / Funda??o Carlos Chagas Filho de Amparo ? Pesquisa do Estado do RJ - FAPERJ / The amount of waste produced daily by dairy cattle is one of the biggest problems in intensive management systems. The disposal of waste from animal facilities has constituted a challenge for breeders and experts as it involves technical, health and economics. In this context, the objective of this study was to evaluate the efficiency of use of a wetlands constructed cultivated with rice in the treatment of wastewater from dairy production. For that it was built a pilot treatment plant consists of: septic tank, anaerobic filter, inert filter and wetlands constructed. Efficiency is evaluated based on the following parameters: chemical oxygen demand (COD), phosphorus, ammonia, nitrate, nitrite, total nitrogen Kjeldahl (NTK), electrical conductivity, turbidity, color and pH. The septic tank had a color and turbidity removal in 45 and 59%, respectively. The anaerobic filter presented chemical demand for oxygen removal, color nitrate and turbidity, of 36%, 41%, 17% and 32%, respectively. In the inert filter material was the reduction of chemical oxygen demand parameters at 5%, 10% nitrate, color 19% Turbidity 9% increase in ammonia and 2%. The SAC recorded removals of 35% of chemical oxygen demand, 43% turbidity, 23% colored, 1.5% phosphorus, 18% of ammonia, nitrate and 7% 17% Total Kjeldahl nitrogen. The treatment plant showed a reduction of chemical oxygen demand by 67%, phosphorus by 27%, ammonia by 25%, nitrate 81% nitrite in 72%, the total Kjeldahl nitrogen by 41%, electrical conductivity by 18%, color 71% and 85% in turbidity. The analyzes conducted over five months of the experiment showed that the removal of organic matter and turbidity in the constructed wetland system planted with rice remained in accordance with the literature, however, the nitrogen removal was lower than that found in the literature. Low nitrogen removal can be attributed to high organic load associated with low hydraulic retention time / A quantidade de dejetos produzidos diariamente pela bovinocultura leiteira ? um dos maiores problemas em sistemas de manejo intensivo. A disposi??o dos res?duos das instala??es animais tem se constitu?do em um desafio para criadores e especialistas, pois envolve aspectos t?cnicos, sanit?rios e econ?micos. Nesse contexto, o objetivo deste trabalho foi avaliar a efici?ncia da utiliza??o de um sistema de alagado constru?do (SAC) cultivado com arroz no tratamento da ?gua residu?ria de bovinocultura de leite. Para isso, foi constru?da uma esta??o piloto de tratamento composta por: tanque s?ptico, filtro anaer?bio, filtro de material inerte e SAC. A efici?ncia foi avaliada a partir dos seguintes par?metros: demanda qu?mica de oxig?nio (DQO), f?sforo, am?nia, nitrato, nitrito, nitrog?nio total Kjeldahl (NTK), condutividade el?trica, turbidez, cor e pH. O tanque s?ptico apresentou uma remo??o de cor e turbidez, em 45 e 59%, respectivamente. O filtro anaer?bio apresentou remo??es de demanda qu?mica de oxig?nio, nitrato cor e turbidez, de 36%, 41%, 17% e 32%, respectivamente. No filtro de material inerte houve a redu??o dos par?metros demanda qu?mica de oxig?nio em 5%, nitrato em 10%, cor em 19%, turbidez em 9% e acr?scimo na am?nia de 2%. O SAC apresentou remo??es de 35% de demanda qu?mica de oxig?nio, 43% de turbidez, 23% de cor, 1,5% de f?sforo, 18% de am?nia, 7% nitrato e 17% nitrog?nio total Kjeldahl. A esta??o de tratamento apresentou uma redu??o de demanda qu?mica de oxig?nio em 67%, f?sforo em 27%, am?nia em 25%, nitrato em 81%, nitrito em 72%, nitrog?nio total Kjeldahl em 41%, condutividade el?trica em 18%, cor em 71% e de turbidez em 85%. As an?lises realizadas ao longo de cinco meses de experimento permitiram concluir que a remo??o de mat?ria org?nica e turbidez no sistema alagado constru?do cultivado com arroz mantiveram-se de acordo com a literatura, no entanto a remo??o de nitrog?nio foi abaixo da encontrada na literatura. A baixa remo??o do nitrog?nio pode ser atribu?da a elevada carga org?nica associada ao baixo tempo de deten??o hidr?ulica