Record Display for the EPA National Library Catalog


Main Title Field Evaluation of a Swirl Degritter at Tamworth, New South Wales, Australia.
Author Shelley, G. J. ; Stone, P. B. ; Cullen, A. J. ;
CORP Author Shelley (G.J.), Cammeray (Australia).;Municipal Environmental Research Lab., Cincinnati, OH.
Year Published 1981
Report Number EPA-R-806746; EPA-600/2-81-063;
Stock Number PB81-187247
Additional Subjects Grit chambers ; Sewage treatment ; Performance evaluation ; Flow rate ; Prototypes ; Grit removal ; Efficiency ; Pumps ; Design ; Sampling ; Cost analysis ; Graphs(Charts) ; Australia ; Storm water runoff
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB81-187247 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 104p
This field evaluation program was initiated with the overall objective of providing information on the behaviour of a full scale swirl degritter designed and constructed in accordance with the shapes and proportions developed during model studies. The swirl degritter was designed for the pre-treatment of river water prior to its entrance into the rising main in order to reduce wear and tear on the raw water pumps and also to reduce the solids loading of the rising main and that of the balance tank of the water treatment works. Results of the solids removal had been evaluated in terms of three parameters: solids larger than 0.2 mm - the classical size aimed at in grit chambers -, solids larger than 0.088 mm and total settleable solids. The field evaluation tests carried out at Tamworth, New South Wales, Australia, prove the validity of the system interms of its hydraulic efficiency.