Temperature Effects on Functionalized Filter Media for Nutrient Removal in Stormwater Treatment

    Authors

    N. B. Chang; M. P. Wanielista;D. Henderson

    Comments

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    Abbreviated Journal Title

    Environ. Prog. Sustain. Energy

    Keywords

    sorption media; stormwater management; reaction kinetics; sustainability; green infrastructure; Engineering, Environmental; Engineering, Chemical; Engineering, ; Industrial; Environmental Sciences

    Abstract

    Attempts to achieve better removal efficiencies of nutrients in stormwater treatment by using aggregates (e.g., mixes of tire crumbs, sawdust, sand, clay, zeolite, sulfur or limestone) in filter media, has been a common practice in green infrastructures. These material mixes mainly promote the adsoiption/absorption and precipitation of orthophosphate in the physicochemical process step and the transformation of ammonia, nitrite, and nitrate via oxidation and reduction reactions in the microbiological stage. Some processes, however are known to be active only in a limited temperature range and variations in filtration kinetics of the sorption media are still unknown. This article aims to explore the filtration kinetics of selected filter media mixes for nutrient removal at various temperatures. With the basic understanding gained in material characterization., a laboratory column study was conducted to simulate the conditions in saturated media. A kinetics study of this kind allowed a comparison of a natural soil with soil augmentations in terms of nutrient removal within a range of the initial concentrations and temperatures. The temperatures (28, 23, and 10 C) were selected to reflect the normal temperature variations in subtropical regions. Significant differences of nutrient removal efficiencies associated with these temperatures were statistically confirmed by ANOVA analyses. The temperature correction factor model was finally applied to address the impact on treatment processes due to the seasonal temperature variations. (C) 2010 American Institute of Chemical Engineers Environ Prog, 30: 309-317, 2011

    Journal Title

    Environmental Progress & Sustainable Energy

    Volume

    30

    Issue/Number

    3

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    309

    Last Page

    317

    WOS Identifier

    WOS:000295116200006

    ISSN

    1944-7442

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