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Aerobic and Anaerobic Transformations of Sulfide in a Sewer System—Field Study and Model Simulations
Author(s) -
Nielsen Asbjørn Haaning,
Vollertsen Jes,
Jensen Henriette Stokbro,
Madsen Heidi Ina,
HvitvedJacobsen Thorkild
Publication year - 2008
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 - 10.2175/106143007x184537
Subject(s) - sulfide , sanitary sewer , corrosion , environmental science , hydrogen sulfide , chemistry , environmental chemistry , environmental engineering , sulfur , organic chemistry
The formation and fate of sulfide in a force main and a downstream‐located gravity sewer were investigated in an extensive field study. Sulfide formation in the force main was significant. However, during 14 minutes of transport in the gravity sewer, the sulfide concentration decreased 30%, on average. An application of a conceptual sewer process model for simulating the formation and fate of sulfide was demonstrated. Overall, the model predicted that approximately 90% of the decrease of the sulfide concentration in the gravity sewer was the result of sulfide oxidation and that only a small fraction entered the sewer atmosphere, causing odor and corrosion. Even so, the model predicted concrete corrosion rates of up to 1.2 mm/y in the gravity sewer section.