||Process Design Manual for Upgrading Existing Wastewater Treatment Plants.
||Weston (Roy F.), Inc., West Chester, Pa.
Sewage treatment ;
Trickling filters ;
Activated sludge process ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The main purposes of this manual are to examine situations that necessitate upgrading of existing municipal wastewater treatment plants and to discuss and evaluate the corrective actions that are required to upgrade these existing plants. Upgrading to overcome organic and hydraulic overloadings and/or to meet more stringent treatment requirements is considered. The information presented in this manual is specifically adapted to plants having capacities of less than 5 mgd. (Modified author abstract)