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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

The application of jet loop reactors for industrial wastewater treatment

Bloor, J. C. January 1995 (has links)
No description available.
2

Industrial wastewater treatment with anaerobic moving bed biofilm reactor

di Biase, Alessandro January 2016 (has links)
The overall goal of the thesis was to develop and optimize the moving bed biofilm reactor technology under anaerobic conditions. The thesis work was divided into two different series of experiments. Hence, at first, the reactor start-up on synthetic substrate was evaluated and it was proven that the anaerobic moving bed biofilm reactor technology could successfully treat concentrated wastewater. Subsequently, a study on Fort Garry Brewery wastewater was conducted to optimize the process for a typical North American industrial wastewater. The aim was successfully achieved and a potential design to treat Fort Garry Brewery wastewater was developed. The anaerobic moving bed biofilm reactor was found to be capable in treating brewery wastewater with potential savings to the industry paying surcharges for discharging wastewater over the city sewer bylaw limits. / October 2016
3

Produção de biohidrogênio em reator anaeróbio operado em bateladas sequenciais com biomassa imobilizada (ansbbr) a partir de água residuária de cervejaria / Biohydrogen production in anaerobic sequencing batch biofilm reactor (ansbbr) from brewery wastewater

Arantes, Mabel Karina 06 September 2018 (has links)
Submitted by Marilene Donadel (marilene.donadel@unioeste.br) on 2018-10-04T18:06:39Z No. of bitstreams: 1 Mabel_Arantes_2018.pdf: 2059864 bytes, checksum: 831822ad4d3c7ce18c2fda6d1319af80 (MD5) / Made available in DSpace on 2018-10-04T18:06:39Z (GMT). No. of bitstreams: 1 Mabel_Arantes_2018.pdf: 2059864 bytes, checksum: 831822ad4d3c7ce18c2fda6d1319af80 (MD5) Previous issue date: 2018-09-06 / The biological production of hydrogen (bioH2) through anaerobic fermentation of residual carbon sources is an interesting way to combine the environmental adequation of agro-industrial wastewaters to the generation of value-added products. Wastewaters with fermentable carbon sources have high potential to produce bioH2, being possible using different inoculum and biological reactors. It is the case found in brewery wastewater, generated in large amount at Brazil and around the world, and there are only few studies about it. In this context, this work studied the production of bioH2 by an anaerobic reactor operated in sequencing batch with immobilized biomass, AnSBBR, from brewery wastewater, using two inocula: mixed culture from the natural fermentation of synthetic wastewater based on sucrose and pure culture of Klebsiella pneumoniae, immobilized in expanded clay. Were evaluated the effects of influent concentration (2,8 a 7,2 gTRS L-1), volumetric organic load (2,6 a 12,6 gTRS (L day)-1) and cycle time (12 h e 24 h), in assays taking from 9 to 16 cycles. The inocula gotten through natural fermentation showed potential to produce bioH2 in preliminary experiments (shaken bottles, 0,5 L) but, in the tests on the reactor the production was low, instable and brief (less than 7 days). The pure inocula K. pneumoniae showed a good adaptability to the residue, in activity through the whole experiment. The raise in the volumetric organic load (VOLc) up to 12,6 gTRS (L day)-1 and the reduction of the cycle from 24 h to 12 h had a positive effect in the production and, under those conditions, the best values for the evaluation parameters ahead were obtained: volumetric productivity average of 0,9 LH2 (L day)-1, molar flow rate up to 10,8 mmolH2 h-1, molar yield average de 3,9 molH2 KgTRS-1, with H2 content in biogas between 18 and 42% and TRS and COD removal efficiency of 89% and 23%, respectively, with a predominance of acetic and butyric pathways. Those results indicate a promising production of H2 from brewery wastewater using K. pneumoniae as inocula in AnSBBR reactor, contributing to the development of the bioH2 technology by the proposal of a new inocula to achieve a higher use of this wastewater potential. / A produção biológica de hidrogênio (bioH2) por meio de fermentação anaeróbia de fontes de carbono residuais é uma forma interessante de aliar a adequação ambiental de efluentes agroindustriais à geração de produto de valor agregado. Águas residuárias que possuam fontes de carbono fermentescíveis apresentam alto potencial para a produção de bioH2, o que é possível com diferentes inóculos e reatores biológicos. É o caso da água residuária de cervejaria, gerada em grandes quantidades no Brasil e no mundo e para a qual poucos estudos foram realizados até o momento. Neste contexto, o presente trabalho avaliou a produção de biohidrogênio em reator anaeróbio operado em bateladas sequenciais com biomassa imobilizada, AnSBBR, a partir de água residuária de cervejaria, empregando dois inóculos: cultura mista proveniente da fermentação natural de meio sintético à base de sacarose e cultura pura de Klebsiella pneumoniae, suportados em argila expandida. Foram avaliados os efeitos da concentração afluente (2,8 a 7,2 gART L-1), da carga orgânica volumétrica aplicada (2,6 a 12,6 gART (L dia)-1) e do tempo de ciclo (12 h e 24 h) em ensaios com duração entre 9 e 16 ciclos. O inóculo obtido por fermentação natural apresentou potencial para produção de bioH2 em ensaios preliminares (frascos agitados, 0,5 L) mas na avaliação em reator a produção foi baixa, instável e breve (período inferior a 7 dias). Já o inóculo puro, K. pneumoniae apresentou boa adaptação ao resíduo e atividade durante todo o período avaliado. O aumento da carga orgânica volumétrica aplicada (COVc) até 12,6 gART (L dia)-1 e a redução do tempo ciclo de 24 h para 12 h tiveram um efeito positivo sobre a produção e nestas condições foram obtidos os melhores valores para os parâmetros de avaliação: produtividade volumétrica de H2 média de 0,9 LH2 (L dia)-1, vazão molar de H2 máxima de 10,8 mmolH2 h-1, rendimento de H2 médio de 3,9 molH2 KgART-1, com teor de H2 no biogás entre 18 e 42% e eficiência média de remoção de ART e de DQO de 89% e 23%, respectivamente, com predomínio das rotas metabólicas acética e butírica. Estes resultados indicam uma produção promissora de H2 a partir de água residuária de cervejaria empregando K. pneumoniae como inóculo em reator AnSBBR, contribuindo para o desenvolvimento da tecnologia do bioH2 ao propor um novo inóculo para o aproveitamento do potencial de uso desta água residuária.

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