Modeling air flow in sanitary sewer systems: A review

IF 2.4 3区 环境科学与生态学 Q2 ENGINEERING, CIVIL
Yu Qian , Weiyun Shao , David Z. Zhu , Khaled A.A. Mohamad , Peter M. Steffler , Stephen Edwini-Bonsu , David Yue , Dave Krywiak
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引用次数: 5

Abstract

Current designs of sanitary collection systems normally only consider the transport of wastewater without attention on the air movement in the sewer airspaces. Under anaerobic conditions, hydrogen sulfide (H2S) can be generated in the liquid phase in sewer systems. H2S is corrosive to concrete and steel structures and odorous or even toxic to human, which can cause corrosion and sewer odor issues. To develop a feasible sewer corrosion and odor control strategy, it is necessary to understand the mechanisms of air flow in sewer systems for developing practical tools to predict and control the air flow. This paper comprehensively reviewed previous efforts on modeling the air flow in sewer systems and provided recommendations on predicting the air flow for engineering applications. The air flow in a single pipe was firstly reviewed followed by the air flow in sewer structures as well as air flow models in sewer networks. Some other considerations such as temperature driven flow, transient water flow, and wind effect were also reviewed. The knowledge gaps were then identified, and recommendations on the further studies were provided.

卫生下水道系统中空气流动的建模:综述
目前卫生收集系统的设计通常只考虑废水的输送,而不考虑下水道空气空间中的空气运动。在厌氧条件下,下水道系统中的液相会产生硫化氢(H2S)。H2S对混凝土和钢结构具有腐蚀性,对人体有臭味甚至有毒,可能导致腐蚀和下水道异味问题。为了制定可行的下水道腐蚀和气味控制策略,有必要了解下水道系统中空气流动的机制,以开发实用的工具来预测和控制空气流动。本文全面回顾了前人在污水系统气流建模方面的研究成果,并对工程应用中的气流预测提出了建议。首先回顾了单个管道内的空气流动,其次是下水道结构中的空气流动以及下水道网络中的空气流动模型。对温度驱动流、瞬态水流和风效应等因素进行了评述。然后确定了知识差距,并提出了进一步研究的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Hydro-environment Research
Journal of Hydro-environment Research ENGINEERING, CIVIL-ENVIRONMENTAL SCIENCES
CiteScore
5.80
自引率
0.00%
发文量
34
审稿时长
98 days
期刊介绍: The journal aims to provide an international platform for the dissemination of research and engineering applications related to water and hydraulic problems in the Asia-Pacific region. The journal provides a wide distribution at affordable subscription rate, as well as a rapid reviewing and publication time. The journal particularly encourages papers from young researchers. Papers that require extensive language editing, qualify for editorial assistance with American Journal Experts, a Language Editing Company that Elsevier recommends. Authors submitting to this journal are entitled to a 10% discount.
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