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Treatment Shaft for Combined Sewer Overflow Detention
Author(s) -
Wright Steven J.,
Ghalib Saad,
Eloubaidy Aziz
Publication year - 2010
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143009x426086
Subject(s) - arithmetic underflow , baffle , combined sewer , inflow , environmental science , environmental engineering , flow conditions , stormwater , engineering , flow (mathematics) , waste management , geology , surface runoff , computer science , mechanical engineering , ecology , oceanography , geometry , mathematics , biology , programming language
A deep, large‐diameter underground shaft to provide detention storage for combined sewer overflow control may be advantageous in urban environments, where space limitations require solutions with a small footprint. An underflow baffle wall is provided at the center of the treatment shaft to prevent short‐circuiting of the flow. An additional objective is to maintain low headlosses through the structure. A physical model study was conducted to determine the effect of the bottom elevation of the baffle wall on the headloss and breakthrough curve for dye injected to the inflow. It was found that there is a considerable range of elevations for which the structure behaves acceptably in providing adequate contact time for disinfectant while maintaining small headlosses.