Sewer odour generation and mitigation in Edmonton's sewer systems
埃德蒙顿下水道系统中下水道气味的产生和缓解
基本信息
- 批准号:506202-2016
- 负责人:
- 金额:$ 5.79万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Collaborative Research and Development Grants
- 财政年份:2022
- 资助国家:加拿大
- 起止时间:2022-01-01 至 2023-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The City of Edmonton has been experiencing severe sewer odour issues and related pipe corrosion problems due to the generation of hydrogen sulfide (H2S) in its sewer systems. When anoxic conditions prevail in a sewer system, sulfate present in the wastewater is reduced to sulfide by sulfate-reducing bacteria residing in the biofilms on the pipe walls and bottom sediments. The dissolved H2S in the sewage can emit into the sewer head space, escape to the ground through manholes, vent pipes, pump stations, etc., and cause odour complaints. H2S in the sewer head space can also be oxidized to sulfuric acid and cause sewer pipe corrosion. To assist the City of Edmonton in developing and assessing its sewer odour control strategies, fundamental research is proposed to investigate the generation and emission of H2S, potential structural and operational improvements in H2S control, and optimal chemical treatment methods. The City's deep sewer system is believed to be a leading cause for generating excessive flow turbulence and significant H2S emission from the sewage. The H2S emission mechanism at drop structures will be studied as well as the potential of using drop structures for air treatment and oxygenation. The solid deposition/erosion process will be studied, and sewer cleaning methods will be examined for their potential to control H2S generation at sewer biofilms and bottom solids. Structural and operational improvements at pump stations will also be investigated to prevent excessive solids accumulation. As the final defense, chemical treatments will be studied to understand how they work on biofilms and control H2S generation. The effects of various chemicals on biofilms and sewage liquid will be examined to obtain optimized chemical treatment methods. The results of this study will help the City of Edmonton develop and implement innovative, cost-effective odour control/mitigation strategies and assist other municipalities in their sewer odour prevention and corrosion control efforts. The proposed study will train 3 PhD students, 2 MSc students, 2 Postdoctoral fellows and 1 undergraduate student.
由于在埃德蒙顿市的下水道系统中产生硫化氢(H2S),该市一直面临着严重的下水道气味问题和相关的管道腐蚀问题。当下水道系统缺氧时,存在于废水中的硫酸盐被居住在管道壁上的生物膜和底部沉积物中的硫酸盐还原细菌还原为硫化物。污水中溶解的H2S会排放到污水头空间,通过人孔、排气管、泵站等逃逸到地面,产生异味。污水头部空间的H2S也会被氧化成硫酸,造成污水管道腐蚀。为了帮助埃德蒙顿市制定和评估其下水道气味控制策略,提出了基础研究,以调查H2S的产生和排放,H2S控制的潜在结构和操作改进,以及最佳的化学处理方法。城市的深层下水道系统被认为是产生过度流动湍流和污水中大量H2S排放的主要原因。研究液滴结构中H2S的排放机理,以及液滴结构用于空气处理和氧化的潜力。将研究固体沉积/侵蚀过程,并研究下水道清洁方法在下水道生物膜和底部固体中控制H2S生成的潜力。还将调查泵站的结构和操作改进,以防止过多的固体堆积。作为最后的防御,我们将研究化学处理,以了解它们如何作用于生物膜并控制H2S的产生。研究各种化学物质对生物膜和污水的影响,以获得最佳的化学处理方法。这项研究的结果将有助于埃德蒙顿市制定和实施创新的、具有成本效益的气味控制/缓解战略,并协助其他城市进行下水道气味预防和腐蚀控制工作。拟培养博士研究生3名,硕士研究生2名,博士后2名,本科生1名。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Zhu, DavidD其他文献
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{{ truncateString('Zhu, DavidD', 18)}}的其他基金
NSERC Industrial Research Chair in Urban Drainage
NSERC 城市排水工业研究主席
- 批准号:
517739-2016 - 财政年份:2022
- 资助金额:
$ 5.79万 - 项目类别:
Industrial Research Chairs
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