Influence of pipe material and surfaces on sulfide related odor and corrosion in sewers
作者： Asbjørn Haaning Nielsen , Jes Vollertsen , Henriette Stokbro Jensen , Tove Wium-Andersen , Thorkild Hvitved-Jacobsen
DOI: 10.1016/J.WATRES.2008.07.013
关键词: Odor 、 Adsorption 、 Hydrogen sulfide 、 Chemistry 、 Sulfide 、 Chemical engineering 、 Corrosion 、 High-density polyethylene 、 Sanitary sewer 、 Waste disposal 、 Environmental engineering 、 Ecological modelling 、 Waste Management and Disposal 、 Pollution 、 Water Science and Technology
摘要: Hydrogen sulfide oxidation on sewer pipe surfaces was investigated in a pilot scale experimental setup. The experiments were aimed at replicating conditions gravity located immediately downstream of force main where related concrete corrosion and odor is often observed. During the experiments, hydrogen gas injected intermittently into headspace partially filled plastic (PVC HDPE) pipes concentrations approximately 1,000 ppm(v). Between each injection, concentration monitored while it decreased because adsorption subsequent surfaces. showed that rate two orders magnitude faster than Removal layer reaction (corrosion) products from found to reduce significantly. However, restored its background level within 10-20 days. A similar treatment had no observable effect removal reactors. results used model under field conditions. This gas-phase sewers would typically amount few percent equilibrium calculated Henry's law. In sewers, significantly higher predicted slower kinetics such
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