Chemical dosing for sulfide control in Australia: An industry survey

Ganigué, Ramón; Gutiérrez, Oriol; Rootsey, Ray; Yuan, Zhiguo

doi:10.1016/j.watres.2011.09.054

Cited by 169 publications

(101 citation statements)

References 23 publications

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“…This strategy would not only represent a significant process cost reduction (further discussed below), but also improve the sludge and wastewater treatment efficiency, enabling maximum resource (iron) reuse while achieving improved methane production. In addition, from a network-wide view, commonly used ferric iron dosing in sewers for H 2 S control 42 might also be useful for CH 4 production enhancement during anaerobic digestion and phosphors removal in the WWTP.…”

Section: Resultsmentioning

confidence: 99%

Zero Valent Iron Significantly Enhances Methane Production from Waste Activated Sludge by Improving Biochemical Methane Potential Rather Than Hydrolysis Rate

Liu¹,

Wang²,

Zhang³

et al. 2016

Environmental Engineering and Activated Sludge Processes

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Anaerobic digestion has been widely applied for waste activated sludge (WAS) treatment. However, methane production from anaerobic digestion of WAS is usually limited by the slow hydrolysis rate and/or poor biochemical methane potential of WAS. This work systematically studied the effects of three different types of zero valent iron (i.e., iron powder, clean scrap and rusty scrap) on methane production from WAS in anaerobic digestion, by using both experimental and mathematical approaches. The results demonstrated that both the clean and the rusty iron scrap were more effective than the iron powder for improving methane production from WAS. Model-based analysis showed that ZVI addition significantly enhanced methane production from WAS through improving the biochemical methane potential of WAS rather than its hydrolysis rate. Economic analysis indicated that the ZVI-based technology for enhancing methane production from WAS is economically attractive, particularly considering that iron scrap can be freely acquired from industrial waste. Based on these results, the ZVI-based anaerobic digestion process of this work could be easily integrated with the conventional chemical phosphorus removal process in wastewater treatment plant to form a cost-effective and environment-friendly approach, enabling maximum resource recovery/reuse while achieving enhanced methane production in wastewater treatment system. L arge amounts of organic matter from wastewater are converted into waste activated sludge (WAS) during biological treatment processes in wastewater treatment plants (WWTPs)1 . Anaerobic digestion of WAS has been widely applied to stabilize and reduce the volume of WAS as well as produce a renewable bioenergy resource in the form of methane 2-5 . The anaerobic digestion process generally consists four stages, i.e. hydrolysis, fermentation, acetogenesis and methanogenesis for methane production 6 . However, the application of anaerobic digestion is often limited by the slow hydrolysis rate and/or poor biochemical methane potential (or degradation extent) of the WAS 7-11 . In order to effectively enhance methane production from WAS in anaerobic digestion, a number of strategies have been developed, such as thermal, chemical, and mechanical methods [12][13][14][15][16][17][18][19][20][21] . However, most of these methods are cost intensive owing to high energy input or large chemical requirements 7,22,23 . Thus, alternative cost-effective approach to improve methane production from WAS in anaerobic digestion process is highly desired.Zero valent iron (ZVI), a cheap reducing agent, has been widely used in wastewater pretreatment, groundwater purification and soil remediation 24,25 . Recent studies have found that ZVI addition in anaerobic reactors for biological wastewater treatment could significantly improve chemical oxygen demand (COD) removal by ca. 25% [26][27][28][29] . Indeed ZVI can lower oxidation-reduction potential and serve as an acid buffer, thus helping maintain a stable and favourable condition for methan...

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Section: Resultsmentioning

confidence: 99%

Zero Valent Iron Significantly Enhances Methane Production from Waste Activated Sludge by Improving Biochemical Methane Potential Rather Than Hydrolysis Rate

Liu¹,

Wang²,

Zhang³

et al. 2016

Environmental Engineering and Activated Sludge Processes

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“…These chemicals include magnesium hydroxide, sodium hydroxide, iron salts, free nitrous acid (FNA), nitrate, oxygen, hydrogen peroxide, ozone, chlorine, and permanganate. There are three main mechanisms for these chemicals in controlling MIC: (1) raising the pH of sewage and hence reducing the H 2 S state sulfide in sewage, such as by using magnesium hydroxide and sodium hydroxide [34]; (2) inhibiting SRB growth, thus reducing the production of sulfide, such as by using iron salt [35,36], FNA [37], nitrate [38][39][40], magnesium hydroxide and sodium hydroxide; and (3) oxidizing sulfide directly, such as by using oxygen [41], ozone, hydrogen peroxide, chloride and permanganate [42].…”

Section: Changing Sewer Tunnel Environmentmentioning

confidence: 99%

The Sustainability of Concrete in Sewer Tunnel—A Narrative Review of Acid Corrosion in the City of Edmonton, Canada

Hu²,

Liu

2018

Sustainability

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This paper is intended to conduct a narrative review on the acid corrosion of sewer tunnel concrete in the City of Edmonton-an investigation on the MIC (microbially induced corrosion) mechanism and the potential control methods to improve the sustainability of concrete. Firstly, three categories of main influencing factors were identified for the rate of MIC: hydraulic parameters, environmental factors, and concrete mixture design. Secondly, it is found that the sewer tunnel design plays an essential role in the control of the MIC. Building on that, a review was conducted on eight municipal drainage design standards in consideration of the MIC, indicating a lack of design standards of the flow velocity and pipe material. Finally, an investigation was done for cement-based rehabilitating techniques and materials.

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“…Os esforços para a minimização de emissões odorantes devem ocorrer já na concepção dos sistemas de coleta e transporte de esgoto, por meio da correta quantificação das vazões e cargas de esgoto, do dimensionamento hidráulico apropriado do sistema, da minimização do comprimento das tubulações de recalque, quedas hidráulicas e volumes dos poços de sucção, e da concepção de alternativas para facilitar as operações de limpeza do sistema (ASCE, 1995;PARK et al, 2014;STUETZ & FRECHEN, 2001;WEF, 1995 (AUGUET et al, 2015;EINARSEN et al, 2000;GANIGUE et al, 2011;WERF, 2007 (GANIGUE et al, 2011), embora a literatura também aponte dosagens menores, variando de 0,3 a 4,5 kgN-NO 3 -por kgS (BENTZEN et al, 1995;EINARSEN et al, 2000;GARCIA DE LOMAS et al, 2006;HOBSON & YANG, 2000;MOODY & RIEK, 1999apud ZHANG et al, 2008RODRIGUEZ-GOMEZ et al, 2005;WERF, 2007 …”

Section: Medidas Preventivas: Minimização De Emissões Odorantesunclassified

“…Na Tabela 1, são relacionadas as principais técnicas utilizadas para a minimização da geração de odores em sistemas de coleta e tratamento de esgoto (discutidas nas seções anteriores), assim como as vantagens/ desvantagens e dosagens de produtos químicos aplicadas em cada uma (BENTZEN et al, 1995;EINARSEN et al, 2000;FIRER;FRIEDLER;LAHAV, 2008;GANIGUE et al, 2011;GARCIA DE LOMAS et al, 2006;GUTIERREZ et al, 2008;2010;HOBSON & YANG, 2000;JAMEEL, 1989;MOODY & RIEK, 1999apud ZHANG et al, 2008PADIVAL;KIMBELL;REDNER, 1995;PARK et al, 2014;RODRIGUEZ-GOMEZ et al, 2005;TOMAR & ABDULLAH, 1994;USEPA, 1985;1991;VAN DURME & BERKENPAS, 1989;WALTRIP & SNYDER, 1985;WEF, 2004;ZHANG et al, 2008).…”

Section: Análise Comparativa Das Técnicas De Adição De Produtos Químiunclassified

Alternativas para o controle de odores e corrosão em sistemas de coleta e tratamento de esgoto

Brandt

Souza

Chernicharo

2017

Eng. Sanit. Ambient.

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RESUMO Este artigo busca consolidar as principais características, vantagens e desvantagens de métodos disponíveis no meio técnico e científico para o controle de odores e corrosão em redes coletoras e estações de tratamento de esgoto, trazendo uma abordagem atualizada sobre soluções preventivas relacionadas à concepção e à operação de sistemas de esgotamento, com adição de compostos químicos ou aeração em fase líquida. São apresentados os princípios de cada técnica e consolidadas as principais diretrizes para o projeto de alternativas. Além disso, são apresentadas diretrizes para a concepção de soluções corretivas com contenção e exaustão de unidades/fontes potencialmente odorantes, incluindo uma discussão sobre os processos atualmente disponíveis no meio técnico-científico para tratamento de gases odorantes e corrosivos.

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Chemical dosing for sulfide control in Australia: An industry survey

Cited by 169 publications

References 23 publications

Zero Valent Iron Significantly Enhances Methane Production from Waste Activated Sludge by Improving Biochemical Methane Potential Rather Than Hydrolysis Rate

Zero Valent Iron Significantly Enhances Methane Production from Waste Activated Sludge by Improving Biochemical Methane Potential Rather Than Hydrolysis Rate

The Sustainability of Concrete in Sewer Tunnel—A Narrative Review of Acid Corrosion in the City of Edmonton, Canada

Alternativas para o controle de odores e corrosão em sistemas de coleta e tratamento de esgoto

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