HYDRAULICS OF CORROSIVE-GAS POCKETS IN FORCE MAINS

Authors
WALSKI TM BARNHART TS DRISCOLL JM YENCHA RM
Citation
Tm. Walski et al., HYDRAULICS OF CORROSIVE-GAS POCKETS IN FORCE MAINS, Water environment research, 66(6), 1994, pp. 772-778
Citations number
17
Categorie Soggetti
Limnology,"Environmental Sciences","Water Resources","Engineering, Environmental
Journal title
Water environment research → ACNP
ISSN journal
10614303
Volume
66
Issue
6
Year of publication
1994
Pages
772 - 778
Database
ISI
SICI code
1061-4303(1994)66:6<772:HOCPIF>2.0.ZU;2-M
Abstract
Hydrogen sulfide corrosion can occur in sewage force mains in places w here the sewage does not continuously contact the top of the pipe. Thi s situation can occur because air is drawn into the pipe when the hydr aulic grade line is below the pipe, or a gas pocket cannot be dragged down a downward slope because of the buoyancy of the pocket. This pape r presents and verifies methods for predicting when each of these situ ations can occur and applies the results to an existing force main.