Air Flow in Sewers

Brocard, Dominique; McMasters, Foster; Thomas, Devan

doi:10.2175/193864712811741494

Cited by 3 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Brocard et al (2012) discussed sewer ventilation, which is often neglected during sewer design despite its importance in odor and corrosion control, and presented an approach to calculating air flow in sewers for fan-driven systems.…”

Section: Emissions From Wastewater Collection Systemsmentioning

confidence: 99%

“…A comprehensive biochemical characterization of methane generation within a wastewater force main was presented by Ward et al (2012), which included building a mathematical model to reproduce the relevant physical, chemical and biological processes present in the force mains and evaluating the effect of potential mitigation. Brocard et al (2012) discussed sewer ventilation, which is often neglected during sewer design despite its importance in odor and corrosion control, and presented an approach to calculating air flow in sewers for fan-driven systems.…”

Section: Emissions From Wastewater Collection Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Gaseous Emissions from Wastewater Facilities

Shaw¹,

Koh²

2013

Water Environment Research

View full text Add to dashboard Cite

A review of the literature published in 2012 on topics relating to gaseous emissions from wastewater facilities is presented. This review is divided into the following sections: odorant emissions from wastewater treatment plants (WWTPs); greenhouse gas (GHG) emissions from WWTPs; emissions from wastewater collection systems; physiochemical odor/emissions control methods; biological odor/emissions control methods; odor monitoring/assessments, and odor impacts. Santos et al. (2012) investigated overall mass transfer coefficients of hydrogen sulfide (H 2 S) from quiescent liquid surfaces under simulated laboratory conditions and found that wind speeds (0.11 -0.27 m/s) had ---------

show abstract

Section: Emissions From Wastewater Collection Systemsmentioning

confidence: 99%

Section: Emissions From Wastewater Collection Systemsmentioning

confidence: 99%

Gaseous Emissions from Wastewater Facilities

Shaw¹,

Koh²

2013

Water Environment Research

View full text Add to dashboard Cite

show abstract

Deep tunnel sewerage system phase 2 – hydraulics

Brocard¹,

Gan²,

Koh³

et al. 2019

Water Practice and Technology

View full text Add to dashboard Cite

The Deep Tunnel Sewerage System (DTSS) is aimed at providing a robust and efficient means of catering to Singapore's used-water needs. DTSS2 is the second phase of this project, comprising an approximately 30-km long South Tunnel, a 10-km long Industrial Tunnel, 60-km of Link Sewers and a new Water Reclamation Plant integrated with a NEWater facility. In contrast with tunnels designed to store overflows in combined sewer systems, the DTSS tunnels convey used-water all the time from Singapore's separated system. This paper describes hydraulic analyses that were conducted during the feasibility study and preliminary design. The topics covered include hydraulic modelling of the entire system with the main goal of ensuring system resilience, air management to avoid odours at ground level, and isolation of tunnel section using gates for potential maintenance or repair. The resilience analyses concentrated on the system functionality in case of a failure, to ensure that used-water can be safely conveyed to a treatment plant. The air management system included several odour control facilities and air jumpers to avoid escape of odorous air from the system and the isolation gates requires detailed hydraulic analyses to cater to the high heads involved.

show abstract

Steady air flow model for large sewer networks: a theoretical framework

Zhang

Shao

Zhu

et al. 2020

Water Science and Technology

View full text Add to dashboard Cite

Modeling air movement in sewer networks is needed in order to address the issues related to sewer odor complaints and sewer corrosions due to hydrogen sulphide in sewers. Most of the existing air flow models can only be applied in small sewer networks or the trunk lines of sewer systems. The purpose of this paper is therefore to propose a theoretical approach to formulate general governing equation set for modelling steady air movement in large sewer systems. This approach decomposes the sewer system of interest into its basic physical components as pipes and nodes, builds local topology of each pipe and each node based on geographic information system (GIS) data as the fundamentals of model formulation. It avoids manually identifying each branch of sewer system, eliminates the effect of physically closed networks in sewer systems on the governing equations, and considers key sewer components and all known driving forces. The proposed approach was applied to a real sewer system with over five hundred pipes. The results show that the proposed model is applicable in modelling air movement in a large sewer system and provides a general idea of sewer gases moving through the system and its emission.

show abstract

Air Flow in Sewers

Cited by 3 publications

References 1 publication

Gaseous Emissions from Wastewater Facilities

Gaseous Emissions from Wastewater Facilities

Deep tunnel sewerage system phase 2 – hydraulics

Steady air flow model for large sewer networks: a theoretical framework

Contact Info

Product

Resources

About