Transformation of Wastewater in Sewer Systems – A Review

Autor: Niels Henrik Norsker, Thorkild Hvitved-Jacobsen, Niels Aagaard Jensen, Per Halkjær Nielsen, Kamma Raunkjær
Rok vydání: 1992
Předmět:
Zdroj: Water Science and Technology. 25:17-31
ISSN: 1996-9732
0273-1223
DOI: 10.2166/wst.1992.0111
Popis: Many chemical, physical and biological transformations of wastewater in sewer systems may take place and cause significant changes in the composition during transportation. This paper focuses on the methods for measuring changes in wastewater composition (organic matter, dissolved oxygen, nitrogen and sulfur compounds), characteristics for changes in wastewater composition and empirical equations for oxygen uptake rates, sulfide production rates and BOD removal rates in both pressure mains and gravity sewers. Simple and more complicated biofilm models are evaluated for use in sewer systems, but so far no suitable advanced model for sewer biofilms exists, due to a lack of quantitative information about the transformations in such high-loaded multispecies biofilms.
Databáze: OpenAIRE