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Civil and Environmental Engineering Commons™
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Articles 511 - 513 of 513
Full-Text Articles in Civil and Environmental Engineering
Selected Chemoautotrophic Processes In Wastewater Treatment: Low Temperature Nitrification Inhibition By An Azo Dye And Biofiltration For Odor Control Of Hydrogen Sulfide, Ronald W. Martin Jr.
Selected Chemoautotrophic Processes In Wastewater Treatment: Low Temperature Nitrification Inhibition By An Azo Dye And Biofiltration For Odor Control Of Hydrogen Sulfide, Ronald W. Martin Jr.
Dissertations, Master's Theses and Master's Reports - Open
Biochemical processes by chemoautotrophs such as nitrifiers and sulfide and iron oxidizers are used extensively in wastewater treatment. The research described in this dissertation involved the study of two selected biological processes utilized in wastewater treatment mediated by chemoautotrophic bacteria: nitrification (biological removal of ammonia and nitrogen) and hydrogen sulfide (H2S) removal from odorous air using biofiltration.
A municipal wastewater treatment plant (WWTP) receiving industrial dyeing discharge containing the azo dye, acid black 1 (AB1) failed to meet discharge limits, especially during the winter. Dyeing discharge mixed with domestic sewage was fed to sequencing batch reactors at 22oC and 7oC. …
Method And Apparatus For Destroying Organic Compounds In Fluid, Yin Zhang, John C. Crittenden, David W. Hand, David L. Perram
Method And Apparatus For Destroying Organic Compounds In Fluid, Yin Zhang, John C. Crittenden, David W. Hand, David L. Perram
Michigan Tech Patents
An apparatus for the photocatalytic oxidation of organic contaminants in fluid includes a reactor and a photocatalyst affixed to support material. Preferably, the outer wall of the reactor is constructed of material transmissive of ultraviolet radiation. The support material preferably is transmissive of ultraviolet radiation. The support material can also be an adsorbent material. Also, a method for photocatalytic oxidation of organic contaminants in fluid. Also, a method for preparation of a supported photocatalyst. Also, a supported photocatalyst adapted for the photocatalytic oxidation of organic contaminants in fluid. Also, a method for preparing a photocatalyst adapted for the photocatalytic oxidation …
Structural Members Comprised Of Composite Wood Material And Having Zones Of Diverse Density, Anders E. Lund, Gordan P. Krueger
Structural Members Comprised Of Composite Wood Material And Having Zones Of Diverse Density, Anders E. Lund, Gordan P. Krueger
Michigan Tech Patents
The disclosed invention includes an improved construction of structural members such as railroad crossties, highway spin posts and highway guard posts and to construction of said members from composite wood material including elongated wood flakes and to a method for making such improved structures.