Industrial pretreatment: Trickling filter performance and design

    Authors

    A. A. Randall; J. M. Sullivan; J. Dietz;C. W. Randall

    Comments

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    Abbreviated Journal Title

    J. Environ. Eng.-ASCE

    Keywords

    FIXED-FILM NITRIFICATION; Engineering, Environmental; Engineering, Civil; Environmental Sciences

    Abstract

    An 11-month trickling filter pilot study was conducted at a synthetic fiber manufacturing facility. COD removals increased linearly as organic loading increased from 2.53-4.90 kg TCOD/m(3)/d (158-306 lb TCOD/1,000 ft(3)/d) and then reached a constant maximum from 4.90-5.78 kg TCOD/m(3)/d (306-361 lb TCOD/1,000 ft(3)/d). Hydraulic loadings did not significantly affect removals over a broad range of 27.1-70.6 m(3)/m(2)/d (666-1,733 gpd/ft(2)). Four design models were evaluated for their ability to model the data. Two models, including the Modified Velz equation, incorporated hydraulic loading as the major independent variable, while the other two equations were based on organic loading. The design equations based on organic loading modeled the data much more accurately. For the two organic loading models evaluated, a Monod-like, pseudo-mixed order model gave slightly superior results to the first order model. In addition, significant stabilization of influent total suspended solids (TSS) was observed. The implications for industrial pretreatment design of trickling filters, as opposed to traditional methodologies developed largely from municipal treatment data, are discussed.

    Journal Title

    Journal of Environmental Engineering-Asce

    Volume

    123

    Issue/Number

    11

    Publication Date

    1-1-1997

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    1072

    Last Page

    1079

    WOS Identifier

    WOS:A1997YC17600004

    ISSN

    0733-9372

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