DEEP TUNNEL DROP STRUCTURE AIR VENTILATION STUDY Northeast Interceptor Sewer and East Central Interceptor Sewer

Lorenzo, Vlad; Ghanem, Ahmad

doi:10.2175/193864708790893512

Cited by 1 publication

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“…Limited prior work (Lorenzo & Ghanem 2008;Sorensen et al 2008) has been done related to air movement in and extraction from deep tunnel systems. Earlier predicted values were estimated from a study conducted in 1983 for the city of Milwaukee, Wisconsin (Jain & Kennedy 1983).…”

Section: Physical Model Studymentioning

confidence: 99%

Abu Dhabi's strategic tunnel enhancement programme: odour extraction system approaches

Cowden

Witherspoon²,

Orakzai

et al. 2012

Water Science and Technology

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The Emirate of Abu Dhabi has experienced tremendous growth since the mid-1970s resulting in significant overloading of its existing sewerage system. Master planning determined that the best long-term wastewater collection and conveyance solution was construction of a deep tunnel sewer system. Implementation of this massive project faced numerous challenges, including the goal of no odours and limited odour control facilities. To accomplish this, the consultant team examined a unique approach of a single odour control system installed at the proposed downstream tunnel pumping station. Rigorous analysis utilising computer-based models confirmed the viability of this approach. However, other approaches including multiple satellite (localised or regional) odour extraction systems were considered. To better understand entrained air forces at vortex drops, and to confirm the preferred odour extraction approach, physical modelling of drop structures and overall tunnel system was implemented. Results and findings concluded that a regional odour extraction system approach was preferred over a single (centralised) extraction approach. This paper focuses on the process of selecting the preferred odour extraction approach and preliminary capacity sizing of regional systems.

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Section: Physical Model Studymentioning

confidence: 99%