Accession Number : ADP000750

Title :   Study of Fixed-Film Biological Contactors for Recreational Area Wastewater Treatment Application,

Corporate Author : RHODE ISLAND UNIV KINGSTON DEPT OF CIVIL AND ENVIRONMENTAL ENGINEERING

Personal Author(s) : Poon,Calvin P. C. ; Smith,Edgar D. ; Strickler,Vicki A.

Report Date : 1982

Pagination or Media Count : 18

Abstract : A survey was conducted in 1981 to evaluate the type and performance of existing wastewater treatment facilities in U.S. Army Corps of Engineers Civil Works (CE) recreational areas (1). It was found that septic tank-leaching field or septic tank-sand filter systems for subsurface discharge are by far the most used treatment systems, followed by extended aeration and lagoon systems. Occasional high suspended solid (SS) concentration in lagoon effluents is not uncommon since dispersed growth and algal cells do not settle well. Upsets of extended aeration treatment plants are experienced by many recreational areas from time to time resulting in biochemical oxygen demand (BOD) and SS concentrations higher than the acceptable limits. This phenomenon is typical of an extended aeration process which has dispersed growth leading to poor settling in the final clarifier.

Descriptors :   *Waste water, *Waste treatment, *Water treatment, *Facilities, *Sewage treatment, Surveys, Kinetics, Equations, Algae, Oxygen consumption, Recreation, Simulation, Substrates, Films

Distribution Statement : APPROVED FOR PUBLIC RELEASE