Dispersion of Odorous Gaseous Compounds Emitted from Wastewater Treatment Plants

Latos, Manolis; Karageorgos, Petros; Kalogerakis, Nicolas; Lazaridis, Mihalis

doi:10.1007/s11270-010-0508-8

Cited by 50 publications

(24 citation statements)

References 14 publications

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“…Results in this study are also in agreement with those by authors who identify solids handling operations as major odour and H 2 S release sources (ASCE, 1989;Higgins et al, 2003;Kim et al, 2003;Suffet et al, 2009;Latos et al, 2011), although emissions are highly dependent on treatment type and solids characteristics, suggesting work could be developed to further investigate H 2 S behaviour in solids handling operations under different conditions from the ones presented here.…”

Section: Discussionsupporting

confidence: 91%

“…In fact, in USEPA (1994), where the emission models used in WATER8 and WATER9 are described, the authors mention that since anaerobic digestion is designed for minimal air/solids contact, and upstream processes provide extensive opportunities for volatilization prior to solids handling operations, emissions at that stage are likely to be insignificant. Other authors, on the other hand, identify sludge or biosolids handling and recovery operations as major odour sources (ASCE, 1989;Higgins et al, 2003;Kim et al, 2003;Suffet et al, 2009;Latos et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Modeling of Hydrogen Sulfide within Enclosed Environments in Biosolids Recovery Facilities

Matos

Matias²,

Ferreira³

et al. 2016

Water Environment Research

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Hydrogen sulfide emissions from wastewater affect human health and equipment durability, thus presenting a complex issue for utilities. Several VOC emission models have been used before to predict H2S in collection systems and water resources recovery operations, even if with restrictions. By contrast, fewer studies focus on biosolids emissions and modelling. This paper presents a dynamic modelling approach to predict H2S concentration in a tank headspace of a wastewater biosolids recovery facility. Data from one of the largest Portuguese water resources recovery facilities was collected under different facility operating modes. The developed model adequately predicted H2S concentration, with R2 values of 0.89 and 0.78, for different periods of the year, thus showing how modelling may reliably contribute to utility operation decisions.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling of Hydrogen Sulfide within Enclosed Environments in Biosolids Recovery Facilities

Matos

Matias²,

Ferreira³

et al. 2016

Water Environment Research

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“…É possível ainda analisar a influência da estabilidade atmosférica e outras condições meteorológicas, além das características geofísicas (relevo e uso do solo) na dispersão do poluente (Sironi et al, 2010;Latos et al, 2011;O'Shaughnessy e Altmaier, 2011;Melo et al, 2012;Olafsdottir et al, 2014;Abdul-Wahab et al, 2014). Latos et al (2011) e Abdul-Wahab et al (2014 verificaram, em modelos de dispersão AERMOD e CALPUFF, respectivamente, que quanto maior a estabilidade atmosférica, maiores são as concentrações de H2S nas proximidades da fonte, visto que a turbulência (mecânica e convectiva) e, consequentemente, o transporte de poluentes são dificultados nessa situação. Abdul-Wahab et al (2014) ainda verificaram que locais com características climáticas e geofísicas distintas apresentaram diferentes tendências de dispersão.…”

Section: Introductionunclassified

Simulação numérica da dispersão do sulfeto de hidrogênio emitido por um reator UASB para tratamento de esgoto doméstico

Augusto¹,

Calheiros²,

Carvalho³

2017

Rev. ambiente água

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RESUMOO tratamento anaeróbio de águas residuárias pode produzir elevadas concentrações de sulfeto de hidrogênio (H2S), substância que apresenta forte odor, além de ser corrosivo e tóxico. Alguns dos métodos existentes para o controle do H2S demandam elevado custo de implantação e operação e, portanto, não são adotados. Dessa forma, o planejamento adequado da instalação de uma estação de tratamento de esgoto (ETE) pode auxiliar na prevenção do impacto e de possíveis problemas com a população. Modelos matemáticos de dispersão atmosférica podem ser aplicados previamente para verificar o alcance do poluente e, portanto, subsidiar a definição do local mais adequado para instalação de uma ETE. Dessa forma, o objetivo deste trabalho foi analisar a dispersão atmosférica do H2S proveniente de uma unidade anaeróbia de tratamento de águas residuárias localizada em um bairro rural do município de Itajubá, MG, Brasil. Para isso, foi aplicado o modelo gaussiano AERMOD utilizando-se dados reais da taxa de emissão do poluente no reator anaeróbio, além de informações meteorológicas e geofísicas (relevo e uso do solo). Como resultado das simulações verificou-se que a pluma de odor foi orientada pelo relevo e se concentrou nas proximidades da unidade de tratamento, limitando o impacto ao bairro rural. O vento também exerceu influência direta na orientação do H2S para o período 1. No entanto, para o período 2, não se verificou a mesma tendência. Dessa maneira, constatou-se que a análise de características meteorológicas (principalmente a direção predominante dos ventos) e geofísicas da região e a aplicação de modelos matemáticos podem auxiliar na escolha do local mais adequado para a instalação de uma ETE.Palavras-chave: AERMOD, dispersão atmosférica, H 2 S, odor.Numerical simulation of the dispersion of hydrogen sulphide emitted by a UASB reactor for domestic sewage treatment ABSTRACTThe anaerobic treatment of wastewaters can produce a large concentration of hydrogen sulfide (H2S), an odorant, toxic and corrosive substance. Control methods for eliminating H2S often require high implementation and operation costs and therefore are not used. Thus, suitable

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“…Given that sulfur-containing compounds may be responsible for the odours emitted from kitchen waste composting in many and our previous study (Latos et al, 2011;Lehtinen and Veijanen, 2011;Chen et al, 2012a), we have developed a novel two-stage oxidative-reductive scrubber technology and tested in lab-scale for odor treatment. An acidic scrubber using sodium hypochlorite as the scrubbing liquid followed by an alkaline scrubber with sodium bisulfite solutions were tested to assess its efficiency and feasibility to control the kitchen waste composting odor.…”

Section: Introductionmentioning

confidence: 99%

Removal of Odor-Causing Substances by a Pilot-Scale Oxidative-Reductive Scrubbing Tower System

Chen

Lin

2013

Aerosol Air Qual. Res.

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Composting is a proven technology for releasing the economic value of kitchen wastes. Following our previous efforts to expand and modify a novel, pilot-scale two-stage oxidative-reductive treatment technology for future implementation as a full-scale tower system, the objective of this work was to examine this scrubber tower system using the optimal operational scenario observed in our previous bench-scale experiments and with two different scrubbing liquid flow rates to allow for its subsequent application at full-scale. As the pH values ranged from 4.0 to 6.0 and from 10.0 to 11.5 in the acidic and alkaline scrubbers, respectively, and the total chlorine concentration ranged from 10 to 95 mg/L as Cl in the acidic scrubber, odor control treatment efficiencies of more than 95% were observed using this treatment technology. A slightly enhanced performance was obtained when a lower scrubbing liquid flow rate being employed, possibly due to the additional contact time between the scrubbing liquids and odor-causing substances in the composting gases. Although a higher scrubbing liquid flow rate increased the possibility of leaking chlorine into the treated gases, which affected the performance of this technology, stronger pH variation and chlorine consumption at the lower scrubbing liquid flow rate indicated the importance of controlling sufficient levels of scrubbing liquid in the system to maintain the treatment efficiency. The results provided insights regarding the use of this treatment technology for minimizing the adverse impacts associated with kitchen waste composting, including the emission of substances that may cause health and/or environmental concerns.

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Dispersion of Odorous Gaseous Compounds Emitted from Wastewater Treatment Plants

Cited by 50 publications

References 14 publications

Dynamic Modeling of Hydrogen Sulfide within Enclosed Environments in Biosolids Recovery Facilities

Dynamic Modeling of Hydrogen Sulfide within Enclosed Environments in Biosolids Recovery Facilities

Simulação numérica da dispersão do sulfeto de hidrogênio emitido por um reator UASB para tratamento de esgoto doméstico

Removal of Odor-Causing Substances by a Pilot-Scale Oxidative-Reductive Scrubbing Tower System

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