Exported from the old PCR Forum - Mar 4 2005 16:34 - The "PCR for Collecting and treatment service of Municipal Wastewater (MWW) in a Treatment Plant" should mention the PSR for Submersible pumps and mixers as a source for information. Submersible pumps and mixers will probably most significantly contribute to the environmental load of a wastewater treatment plant. / Christian Wiklund