Accession Number : ADA018318

Title :   Advanced Trickling Filter for Wastewater Treatment.

Descriptive Note : Final rept. Jun-Dec 74,

Corporate Author : GARY AIRCRAFT CORP SAN ANTONIO TEX

Personal Author(s) : Leschber,E. W.

Report Date : AUG 1975

Pagination or Media Count : 41

Abstract : A prototype advanced trickling filter unit using a foamed silica medium was designed, constructed, installed, and evaluated. The reduction in biochemical oxygen demand (BOD) and total suspended solids (TSS) were the parameters of most interest. The design hydraulic load of the unit was 700,000 gallons per day. The design organic load (BOD) was 80 pounds per 1000 cubic feet per day. The design solids load was 60 pounds per 1000 cubic feet per day. The assumed organic and solids concentrations were 40 mg/l and 40 mg/l, respectively. Laboratory data shows that the effluent BOD was reduced from 29 mg/l to 18 mg/l. The TSS reduction was from 64 mg/l to 32 mg/l. This indicates a reduction that will allow the upgrading of existing treatment plants to a level consistent with newer effluent limitations. The installation and operation of GaryGlas advanced trickling filters were economical. These filters demonstrated their effectiveness and efficiency as a wastewater treatment system.

Descriptors :   *Sewage treatment, Performance(Engineering), Construction, Efficiency, Oxygen, Solids, Concentration(Chemistry), Installation, Costs

Subject Categories : Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE