||Characterization of clean and fouled perforated membrane diffusers
Ewing, Lloyd ;
||Ewing Engineering Co., Milwaukee, WI.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
||Risk Reduction Engineering Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Sewage treatment plants ;
Field tests ;
Performance evaluation ;
Activated sludge process ;
Mechanical properties ;
Materials tests ;
New York ;
Experimental design ;
Fine pore aeration systems ;
Green Bay(Wisconsin) ;
Cedar Creek(New York) ;
SOTE(Standard Oxygen Transfer Efficiency)
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||viii, 7 p. : ill. ; 28 cm.
Laboratory analyses were conducted on plasticized PVC perforated membrane tube diffusers after varying periods in service at two different municipal wastewater treatment facilities. One set of diffusers from Cedar Creek, NY, was in service for 26 months. The other set from the Green Bay Metropolitan Sewerage District facility was in service for approximately 47 months. Tests on the membranes included dynamic wet pressure (DWP), flow uniformity, weight, dimensions, tensile modulus of elasticity, hardness, and standard oxygen transfer efficiency (SOTE).
Project officer: Richard C. Brenner. Cooperative agreement CR812167. Photocopy.