A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Full‐Scale Ozone–Biofiltration: Seasonally Related Effects on NOM Removal
Performance of full‐scale ozone–biofiltration was investigated over 14 months to determine the potential effects of seasonally related changes in water temperature and quality on the removal of natural organic matter fractions. The biofilters removed on average 12% of dissolved organic carbon, 31% of biopolymers, 6% of humic substances, 10% of humic building blocks, 31% of low‐molecular‐weight (LMW) acids/LMW humics, 14% of LMW neutrals, and 52% of assimilable organic carbon. The biofilters exhibited an increase in removal of dissolved organic carbon, biopolymers, LMW acids/LMW humics, and assimilable organic carbon as temperature increased from 3 to 28°C, even though filter contact time was somewhat shorter at higher temperatures. Although phosphorus concentrations were reduced by coagulation pretreatment, the biofilters effectively removed the LMW compounds generated from ozonation. Filter biomass levels were not related to temperature, empty bed contact time, time during the filter cycle, or removal of natural organic matter.
Full‐Scale Ozone–Biofiltration: Seasonally Related Effects on NOM Removal
Performance of full‐scale ozone–biofiltration was investigated over 14 months to determine the potential effects of seasonally related changes in water temperature and quality on the removal of natural organic matter fractions. The biofilters removed on average 12% of dissolved organic carbon, 31% of biopolymers, 6% of humic substances, 10% of humic building blocks, 31% of low‐molecular‐weight (LMW) acids/LMW humics, 14% of LMW neutrals, and 52% of assimilable organic carbon. The biofilters exhibited an increase in removal of dissolved organic carbon, biopolymers, LMW acids/LMW humics, and assimilable organic carbon as temperature increased from 3 to 28°C, even though filter contact time was somewhat shorter at higher temperatures. Although phosphorus concentrations were reduced by coagulation pretreatment, the biofilters effectively removed the LMW compounds generated from ozonation. Filter biomass levels were not related to temperature, empty bed contact time, time during the filter cycle, or removal of natural organic matter.
Full‐Scale Ozone–Biofiltration: Seasonally Related Effects on NOM Removal
Pharand, Lizanne (author) / Van Dyke, Michele I. (author) / Anderson, William B. (author) / Yohannes, Yonatan (author) / Huck, Peter M. (author)
Journal ‐ American Water Works Association ; 107 ; E425-E435
2015-08-01
11 pages
Article (Journal)
Electronic Resource
English
adenosine triphosphate , Dissolved Organic Carbon , Acids , Natural Organic Matter , drinking water , Humic Substances , Temperature , Seasonal Effects , assimilable organic carbon , Ozone , natural organic matter , Assimilable Organic Carbon , Biological Filters , Molecular Weight , biofiltration , ozone
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