Predictive modeling of sulfide removal in tray aerators

    Authors

    S. J. Duranceau;J. O. Faborode

    Comments

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    Abbreviated Journal Title

    J. Am. Water Work Assoc.

    Keywords

    Engineering, Civil; Water Resources

    Abstract

    An investigation studying the effectiveness of sulfide removal from groundwater by a variety of tray aerators was conducted and an empirical first-order mathematical model was developed that accurately predicted sulfide removal. Total sulfide, temperature, pH, and dissolved oxygen content passing through each tray were analytically determined in the field at several facilities. The derived model took the form of C-n = C-0 (10(-kn)), in which k = (0.00248)(hydrogen ion [H+])(-0.397) (tray area)(0.584) (flow)(-1.17), n is the number of tray stages (tray levels) in the aerator, C-0 is the sulfide content entering the distribution tray, and C-n is the sulfide concentration exiting aeration tray n. Sulfide removal was negatively affected as H+ decreased and flow increased but positively affected as the available tray aerator surface area increased. The empirical model demonstrated linear correlation (R-2 = 0.875-0.962) when model projections were compared with analytically measured values, with an accuracy that ranged between 3.44 and 13.3%.

    Journal Title

    Journal American Water Works Association

    Volume

    104

    Issue/Number

    2

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    53

    Last Page

    54

    WOS Identifier

    WOS:000300547400015

    ISSN

    2164-4535

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