Nanofiltration as a Post-Treatmento to Membrane Bioreactor Effluent for Dairy Wastewater Reuse

Andrade, Laura Hamdan de; Mendes, F.D.; Espíndola, Jonathan C.; Herculano, M.A.; Amaral, Míriam Cristina Santos; Lange, Liséte Celina; Machado, M.

doi:10.1016/j.proeng.2012.09.007

Cited by 4 publications

(8 citation statements)

References 6 publications

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“…In addition, biomass activities in membrane bioreactors can be negatively affected by high cross-flow velocities (Brockmann and Seyfried 1996). Moreover, post-treatment of the effluent with NF was reported to be necessary to produce effluent suitable for recycling (Andrade et al 2012). To overcome these drawbacks, the membrane installation used in the present study was downstream of the anaerobic bioreactor so that it would reject total suspended solids and COD from the anaerobically treated effluent.…”

Section: Introductionmentioning

confidence: 99%

Use of Ceramic Membranes in a Membrane Filtration Supported by Coagulation for the Treatment of Dairy Wastewater

Zielińska

Galik

2017

Water Air Soil Pollut

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A membrane filtration system was used to remove organic compounds, suspended solids, colour and turbidity from anaerobically treated dairy wastewater. Direct microfiltration (MF), ultrafiltration (UF), MF-UF and a combination of UF with coagulation using two conventional coagulants were investigated. The installation with ceramic membranes was operated at a pressure of 0.15 MPa (MF) and 0.3 MPa (UF). COD removal was 89 ± 2% in MF, 95 ± 1% in UF and 99% in MF-UF. Apart from size exclusion, removal was also the result of adsorption of organics on the membrane; 3–18% of COD removal was attributed to adsorption. In all these membrane systems, colour removal was 96–98%. Coagulation removed 63–72% of COD at all coagulant doses. In combination with UF, 96–97% of COD was removed. The use of coagulants was ineffective for colour removal; further treatment by UF resulted in above 98% removal. Because of complete rejection of suspended solids, turbidity removal exceeded 99% under all conditions. The use of increased coagulant doses did not have an effect on total efficiency of pollutant removal and on the permeate flux. Coagulation pre-treatment enhanced the performance of filtration only by lengthening the filtration cycle by about 12% as compared to direct UF. Not only was pollutant removal highest in MF-UF, but also the average permeate flux was about 80% higher in this two-stage system than in direct UF. This study shows that the most effective strategy to mitigate membrane fouling is the use of MF as a pre-treatment preceding UF.

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Section: Introductionmentioning

confidence: 99%

Use of Ceramic Membranes in a Membrane Filtration Supported by Coagulation for the Treatment of Dairy Wastewater

Zielińska

Galik

2017

Water Air Soil Pollut

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“…In response to such conditions, the development of effluent treatment technologies has increased in order to meet the quality limits for reuse. Thus, reuse waters can become an important contribution to the water supply in the industry [6,[15][16][17].…”

Section: Water Reuse In Industrymentioning

confidence: 99%

“…Mainly because of the charge for water use and the need to preserve the environment, interest in water reuse has gained relevance. In this sense, membrane separation processes in the treatment of effluents are presented as one of the most promising technologies, enabling the reuse of water and, consequently, reducing the consumption of good-quality water in processes that do not demand such high quality, optimizing its use in industrial processes [16]. According to Mierzwa and Hespanhol [1], membrane separation processes differ from conventional filtration systems because the feed flow is parallel to the membranes.…”

Section: Membrane Separation Processmentioning

confidence: 99%

Membrane Technology and Water Reuse in a Dairy Industry

Galvão¹

2018

Technological Approaches for Novel Applications in Dairy Processing

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The dairy industry uses substantial amount of water to achieve the production process, especially for the maintenance of hygiene and cleanliness conditions. With this, is generating considerable volume of wastewater requiring treatment to meet the discharge standards before discarded? With the shortage of water resources and charging for water use, minimizing water consumption in industries is of paramount importance to maintain its market competitiveness. In this sense, there has been increasing interest in the reuse of wastewater, in order to decrease the good water consumption by processes that do not require such high quality feature. Membrane separation processes are highlighted in generating good-quality reuse water that can meet the demand of various industrial processes. Thus, the present study aimed to evaluate the membrane separation processes for the treatment of dairy industry effluent to reuse.

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“…Assim, atualmente, águas de reúso podem tornar-se uma importante contribuição para o suprimento de água na indústria (ÁREVALO et al, 2012;ANDRADE et al, 2012;ANDRADE et al, 2014;VOURCH et al, 2008).…”

Section: Tipo De Produtounclassified

“…Nesse sentido, os processos de separação por membranas no tratamento de efluentes se apresentam como uma das tecnologias mais promissoras, possibilitando a reutilização das águas e, consequente mente, reduzindo o consumo de água de boa qualidade em processos que não exijam qualidade tão alta, otimizando sua utilização nos processos industriais (ANDRADE et al, 2012 Figura 1 -Esquema representando a entrada do líquido, a saída do permeado e do concentrado (retentado) diferem dos sistemas de filtração convencio nal, porque o fluxo de alimentação é paralelo às membranas.…”

Section: Processos De Separação Por Membranasunclassified

Os Processos De Separação Por Membranas E Sua Utilização No Tratamento De Efluentes Industriais Da Indústria De Laticínios: Revisão Bibliográfica

Galvão

Gomes

2015

Revista do ILCT

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RESUMOAs indústrias de laticínios são grandes geradoras de efluentes em seus processos de produção. Esse efluente precisa ser tratado antes de seu lançamento em corpos hídricos, para atender aos padrões da legislação, especialmente a Resolução nº 357/2005 do Conselho Nacional do Meio Ambiente (CONAMA) complementada e alterada pela Resolução nº 430/2011(CONAMA) que "dispõe sobre condições e padrões de lançamento de efluentes". Os processos de separação por membranas têm ganhado destaque no que se refere ao tratamento de efluentes por meio de sistemas compactos de tratamento, pois possibilitam a geração de águas de reúso que podem ser reaproveitadas nos processos industriais. Nesse sentido, buscou-se na literatura estudos na área de tratamento de efluentes de laticínios por meio dos processos de separação por membranas, com o objetivo de elucidar sobre a importância desse tipo de tecnologia no tratamento de efluentes de laticínios.Palavras-chave: leite; efluente; separação. ABSTRACTDairy industries are great generator of waste in their production processes. This effluent must be treated before its released into waterbodies, comply with AOS Legislation Standards, especially Resolution nº 357/2005 of the National Council of the Environment (CONAMA) supplemented and amended by Resolution

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Nanofiltration as a Post-Treatmento to Membrane Bioreactor Effluent for Dairy Wastewater Reuse

Cited by 4 publications

References 6 publications

Use of Ceramic Membranes in a Membrane Filtration Supported by Coagulation for the Treatment of Dairy Wastewater

Use of Ceramic Membranes in a Membrane Filtration Supported by Coagulation for the Treatment of Dairy Wastewater

Membrane Technology and Water Reuse in a Dairy Industry

Os Processos De Separação Por Membranas E Sua Utilização No Tratamento De Efluentes Industriais Da Indústria De Laticínios: Revisão Bibliográfica

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