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Tratamento e recuperação da água de lavagem dos filtros de uma estação de filtração direta e simulação da disposição dos lodos em estações de tratamento de esgoto / Treatment and recovery of wastes from backwash filter on direct filter water treatment systems and simulation of sludge disposal in wastewater treatment systemsJuan Carlos Escobar Rivera 16 February 2001 (has links)
Foi pesquisada a aplicação de métodos, em nível de laboratório, através dos quais é possível otimizar, tratar e dispor resíduos de lavagem de filtros de estações de tratamento de água (Caso ETA do rio Descoberto - ETA-RD Brasília). Na clarificação da água de lavagem dos filtros, observou-se o efeito favorável da adição de polímero para melhorar a separação líquido-sólido é, portanto, as eficiências de remoção de turbidez, cor aparente, sólidos suspensos e coliformes totais. Observou-se melhor sedimentabilidade do lodo a ser desaguado. Os ensaios de centrifugação, em escala de bancada, mostraram que o método aplicado auxilia na determinação da dosagem a ser usada numa centrífuga em escala real. Foram avaliados três métodos de disposição do lodo adensado da ETA-RD em ETE: 1) sedimentação com esgoto sanitário e posterior digestão anaeróbia do lodo; 2) Digestão anaeróbia e 3) digestão aeróbia. Os melhores resultados foram obtidos com a digestão anaeróbia. Os estudos realizados mostraram que há diversas alternativas de tratamento e disposição desses resíduos, mas é necessário, sempre que possível, a avaliação das diferentes alternativas para selecionar a(s) mais apropriada(s) a cada caso em particular, pois fatores como custos e disponibilidade de de sistemas ou equipamentos, definirão a aplicabilidade ou não de determinado método. / It was researched the application of methods on laboratory bench scale to optimize the reuse, treatment and disposal of wastes from filter backwash of Water Treatment Plant - WTP (WTP-RD Descoberto River, Brasília case). In the clarification process of this waste, favorable effect of addition of polymer for best liquid-solid separation and, thus, better removal efficiencies of turbidity, apparent color, suspended solids and total coliforms was observed. Better sedimentability of the sludge occurred. The centrifugation tests showed that the applied method help on determination of dosagem to be used in full scale. Three methods to dispose thickened sludge of WTP-RD on wastewater treatment Plants - WWTP were evaluated: 1) Sedimentation with domestic sewage and anaerobic digestion of sludge; 2) Anaerobic digestion and 3) Aerobic digestion. Best results were obtained with anaerobic digestion. The results showed that there are alternatives of treatment and disposal of wastes of WTP, but is necessary, if possible, to make the evaluation of this alternatives to select the most appropriate(s) in each case because factors as costs, systems or equipments availability, will define the applicability or not of a particular method.
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Efici?ncia de uma ETE em escala real composta por reator UASB seguido de lodo ativado / Efficiency of a full-scale WWTP consists of UASB reactor followed by activated sludgeFerraz, Danillo Luiz de Magalh?es 07 March 2014 (has links)
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Previous issue date: 2014-03-07 / In the state of Rio Grande do Norte (RN), Brazil, there are about 80 sewage
treatment systems being the predominant technology waste stabilization ponds. The
Baldo s WWTP , due to its location and low availability of area, was designed as a
hybrid conventional system (UASB reactor followed by activated sludge with
biodiscs) at a tertiary level, being the most advanced WWTP in the State and also
with the larger treatment capacity (1620 m3/h) .The paper presents the results of its
performance based on samples collections from May to December 2012. Composite
samples of the effluent of the grit chamber, UASB reactors, anoxic chambers,
aeration tanks and treated effluent were collected weekly, every 4 hours for 24 hours.
The results showed that the WWTP effluent presented adequate ranges of
temperatures, pH and DO, however removal efficiencies of BOD and TSS were
below the predicted by design. The UASB reactors also showed removals of BOD
and TSS less than expected, due to the accumulation of sludge in the reactors, which
eventually, was washed out in the effluent. The nitrification process was not
satisfactory mainly due to problems in the oxygen distribution in the aeration tanks.
The removal of ammonia and TKN were high, probably by the assimilation process / No Rio Grande do Norte (RN), Brasil existe cerca de 80 sistemas de tratamento de
esgotos sendo a tecnologia das lagoas de estabiliza??o a predominantemente
utilizada. A ETE do Baldo, devido a sua localiza??o e disponibilidade de ?rea foi
concebida como um sistema convencional h?brido (UASB lodos ativados com
biodiscos) em n?vel terci?rio, sendo a ETE mais avan?ada do Estado e com maior
capacidade de tratamento (1620 m
3
/h). O trabalho apresenta os resultados do seu
monitoramento, atrav?s de coletas realizadas semanalmente no per?odo de junho a
dezembro de 2012, com base em amostras compostas coletadas a cada 4 horas,
durante 24 horas, do efluente da caixa de areia, reatores UASB, c?maras an?xicas,
tanques de aera??o e efluente tratado. Os resultados mostraram que a ETE
apresentou efluentes com temperaturas, pH e OD adequados, entretanto efici?ncias
abaixo do projetado para os par?metros DBO e SST. Os reatores UASB tamb?m
apresentaram remo??es de DBO e SST abaixo do esperado, devido ao ac?mulo de
lodo nos reatores, uma vez que, este era expelido no efluente. O processo de
nitrifica??o n?o foi satisfat?rio, pelas baixas concentra??es de nitrato encontradas
nos efluentes dos tanques de aera??o, provavelmente por problemas no sistema de
aera??o. As remo??es de am?nia e NTK foram altas, provavelmente pelo processo
de assimila??o
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Nakládání s odpadními vodami v obci Sudice / Wastewater management in the village SudiceHoferková, Lenka January 2018 (has links)
This thesis is written due to the poor quality of the stream Sudický potok and the fish kills in nearby ponds supplied by the stream. The goal is evaluating the results of the water samples obtained from the four local spots. Polluted quality in the stream in the Sudice town then proceed to design three various solutions of the sewage collection systems. The first option is designing the municipal wastewater treatment plant and the draining wastewater by single sewerage or sanitary sewerage. The second choice designs the domestic waste water treatment plants. The third solution is designing the sanitary sewerage and effluent sewerage to the nearby waste water treatment plant in Šebetov town. All variants are economically evaluated. In conclusion the first solution, municipal waste water treatment plant with the single sewerage, is recommended.
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Kontaminace životního prostředí musk sloučeninami / Contamination of environment of musk compoundsTobková, Lenka January 2015 (has links)
Synthetic musk compounds are artificial organic substances commonly used as fragrant constituents of personal care products as parfums, cosmetics, detergents, in-house cleaning and washing agents. Given their large area of applications and their ability to be persistent, they leaked into all parts of ecosystem, especially aquatic one. There have been a big focus on studiyng these compounds, their properties and fate in the different parts of ecosystems in the last years. The aim of master's thesis was carry out the determination of five representatives (habanolide, exaltolide, ambrettolide, musk MC4 and ethylene brassylate) of macrocyclic musk compounds in waste water samples from influent and effluent of three water treatment plants (WWTP Brno-Modřice, WWTP Lednice and WWTP Mikulov). One of the main tasks was to perform a method optimisation for the determination of selected musk compounds in waste water and evaluation and interpretation of the results. Solid phase microextraction (SPME) technique was used for the extraction of analytes, consequently gas chromatography-mass spectrometry was used for analysis of selected analytes. Following evaluation the removal efficiency of musk compounds in the waste water treatment plant was assessed.
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Úprava hydraulických poměrů v prostoru rozdělovacího objektu čtyř usazovacích nádrží na ČOV Brno-Modřice / Adjustment of hydraulic conditions in the area of the distribution object of four settling tanks at the Brno-Modřice WWTPŠenková, Monika January 2022 (has links)
The aim of this diploma thesis is to find a suitable adjustment of hydraulic conditions in the distribution object area of four settling tanks at the Brno-Modřice WWTP. Due to the WWTP capacity increase, there were changes in the hydraulic conditions at the distribution facility, which needed to be adjusted. To find a suitable hydraulic solution, a hydraulic physical model was created in the Laboratory of Water Management Research of the Institute of Hydraulic Engineering, Faculty of Civil Engineering, Brno University of Technology, where experimental tests were made.
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