Modular Plastic Media for Shallow Bed Trickling Filter Applications

by Gary C. Deis, John Carollo Engineers, Walnut, Creek, CA, USA,
Joanie M. McDonald, John Carollo Engineers, Walnut, Creek, CA, USA,
J. Dale Hawley, John Carollo Engineers, Walnut, Creek, CA, USA,

Document Type: Proceeding Paper

Part of: Environmental Engineering


Little specific data is available for less sophisticated trickling filter systems which employ recent plastic media designs for shallow bed filters without the added cost of subsequent aeration and solids contact. Inasmuch as recent changes in the Federal definition of secondary treatment allow many communities the opportunity to utilize more conventional trickling filter designs, the need for the development of reliable criteria for the design of these systems based on documented performance data is needed. Completed and on going studies conducted for the City of Bakersfield, CA, are aimed at providing the criteria needed for the cost effective implementation of a shallow bed (10 feet left bracket 3 meter right bracket deep or less) modular cross-flow plastic media trickling filter system to produce an effluent quality consistent with recent Federal regulations. Evaluations completed to date have resulted in conclusions regarding media performance at various loadings as well as findings regarding media structural stability and weatherability. (Edited author abstract. )

Subject Headings: Plastics | Filters | Plastic design | Federal government | Bed materials | Aeration | Solid mechanics | Terminology and definition | California | United States

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