Title

Industrial pretreatment: Trickling filter performance and design

Authors

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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