Contaminação das águas subterrâneas por nitrogênio devido à irrigação com efluente do tratamento de esgoto

Agriculture is an activity in which there is the possibility of using lower quality water and reuse appears as an alternative for irrigation. However, the negative environmental effects of reuse must be understood. The objective of the present work was to verify the potential of groundwater contamination by nitrogen duo to drip irrigation with effluent from domestic wastewater treatment. Three crop cycles of lettuce cv. Raider were conducted, the first between October and November 2009, the second in April and May 2010 and the third one in June and July 2010. The use of effluents was compared with potable water at accumulated water depths of 98.8 mm for the first, 98.4 mm for the second and 119 mm for the third cycle. Soil percolate concentrations of nitrate, nitrite and ammonia were studied at 0.25 m and 0.50 m depths in a completely randomized design. Percolate concentrations of nitrite and ammonia in soil irrigated with effluents showed no groundwater contamination risk. Nitrate however, caused concern, albeit with similar concentrations for both effluent and potable water.

Estudo do lodo gerado em reator biológico, pelo tratamento da água de produção do petróleo, no terminal marítimo Almirante Barroso, município de São Sebastião, SP visando sua disposição final

Pós-graduação em Ciências Biológicas (Microbiologia Aplicada) - IBRC

Produção de tilápias-do-Nilo em sistemas sem renovação de água com Wetlands para tratamento de efluentes

Pós-graduação em Aquicultura - FCAV

Utilização de macrófitas aquáticas flutuantes no tratamento de efluentes de carcinicultura

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Tratamento de efluentes de piscicultura utilizando sistema tipo wetland povoado com espécies de macrófitas aquáticas de três tipos ecológicos diferentes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Uso de Wetlands construídas no tratamento de efluentes de carcinicultura

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Atributos químicos do solo e crescimento de laranjeiras ‘pera’ irrigadas com efluente de esgoto tratado e fertilizadas com lodo de esgoto compostado

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Variação da comunidade planctônica e fatores físico-químicos da água em dois sistemas de aquicultura

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Uso de sistemas construídos de áreas alagadas (Constructed Wetland System - CWS) tipo ascendente/descendente, para tratamento de efluentes avícolas

Human development and population growth during the twentieth century increased the water demand, tripling its consumption between 1950 and 1990. As the water streams were polluted; and as water is the source of minerals and also regulates vital functions, it becomes the vehicle of transmission and consequently spreads many diseases. Probably, the industries are the major responsible for this pollution when they dump untreated effluents to water streams, saturating the already insufficient net of sanitation facilities polluting water and soil. An effective treatment has been established with low cost in Europe and the United States, through constructed systems on wetlands Constructed Wetland Systems - CWSs, gradually used in other countries in the last three decades. Lately, we observe a continuous growth in Brazilian poultry business, and poultry industry showed greatest dynamism in the country, following the global market. Pondering this information and the efficiency of such treatment, this work aimed to study prototypes, in a laboratory scale, simulating ascending and descending types of CWSs, vegetated with aquatic macrophytes Eichhornia crassipes and the uses of aggregates and soil, to treat industrial wastewater from slaughterhouses and aviary. We conducted the initial characterization of the effluent to have an idea of its constituents and to scale the system and the continuous flow. Furthermore, we characterized the soil to be used in this system. The collects are periodically made in the refrigeration industry FRICOCK FRIGORIFICAÇÃO AVICULTURA INDÚSTRIA E COMÉRCIO LTDA. for local treatment simulation. The effluent that was treated with 12 prototypes of CWSs are analyzed with some frequency. The results of these reviews were compared to the effluent coming from the industry... (Complete abstract click electronic access below)

Comparação de eficiências do uso de sistemas construídos de áreas alagadas (Constructed Wetland Systems - CWS), tipos ascendente e descendente, para tratamento de efluentes

Water is an essential element for life. The use of this element, to support the community, defines it as water resource. This feature is being misused and degraded by the dumping of highly contaminated effluents. The impoverishment of its quality poses a risk to human consumption. The necessity to manage this resource, treating the wastewater properly, requires the constant improvement of treatment systems. Another need is to adjust the cost of systems to the demands of communities with less financial clout. This study aimed to adapt and understand the systems of wetlands, improving its efficiency, in an attempt to collaborate with the enrichment of this technology. The practical evidence, with lab-scale prototypes, assembled in ETE Piracicamirim with urban sewage effluent contributed to highlight the problems and operating system design. The bibliographic review showed that several studies had effectiveness for treatment. But it was evident the need for better understanding of dimensioning definitions that better attempted to the answers into the project. Moreover, standardization of system conditions for the specific wastewater treatment is an interesting field, identified, for future studies yet contribute to environmental engineering and sanitation

Utilização de resíduos de tratamento de esgoto como suprimento hídrico e nutricional na cultura do girassol

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

A thin layer electrochemical cell for disinfection of water contaminated with Staphylococcus aureus

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Reatores anaeróbios operados em batelada sequencial, seguidos de lagoas de polimento, para o tratamento de águas residuárias de suinocultura. Parte I: produção de metano e remoção de DQO e de sólidos suspensos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Reatores anaeróbios operados em batelada sequencial seguidos de lagoas de polimento para o tratamento de águas residuárias de suinocultura. Parte II: remoção de nutrientes e coliformes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Tratamento de águas residuárias de suinocultura em reatores anaeróbios de fluxo ascendente com manta de lodo (uasb) em dois estágios seguidos de reator operado em batelada sequencial (RBS)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)