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Filtering by: Creator Hobson, Donald Remove constraint Creator: Hobson, Donald Subject Sewage -- Purification -- Biological treatment Remove constraint Subject: Sewage -- Purification -- Biological treatment

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  • Flow characteristics of constructed wetlands : tracer studies of the hydraulic regime

    Creator:
    Stairs, Darrin B.
    Abstract:
    Treatment efficiency in a constructed wetland is related in part to the amount of time that a wastewater remains in the system. Current design methods idealize the system as a plug flow reactor and use a "residence time" based solely on the volume of the cell and the flow rate....
    Resource Type:
    Masters Thesis
    Full Text:
    porosity accounts for all hydraulic inefficiencies in the system. Watson and Hobson (1989) report

  • Effect of plant surface area on organic carbon removal in wetlands

    Creator:
    Kuehn, Elaine Jinx
    Abstract:
    This study investigated the effect of plant surface area (plant density) on the efficiency of organic carbon removal in a bench-scale constructed wetland. Constructed wetlands are commonly assumed to be biofilm reactors in which organic carbon removal occurs primarily through sedimentation and aerobic degradation by attached microbial biofilms. In conventional...
    Resource Type:
    Masters Thesis
    Full Text:
    literature values of 3-15% of volume occupied by plants have been reported (Watson and Hobson 1989, Kadlec