As is customary for Veolia Water Technologies, their local technicians worked closely with the end user throughout the design and installation phases to facilitate smooth implementation. Since installation was completed, Veolia technicians have monitored the new plant constantly to ensure utmost reliability.
According to Viera, installation of the two trains was simple and fast. Unlike larger centrifugal pumps, no special crane was required to install the lighter, more compact APP pumps. “The end user was surprised to discover how little space the two new
trains required,” says Viera.
What came as no surprise, however, was the new plant’s dependability and energy savings. Maintenance has been simple, and actual consumption is even lower than Veolia’s engineers had calculated in their bid. The retrofitted plant uses 2.0 kWh/m3 to process 1,000 m3 per day, or 57% less than the plant’s previous 4.7 kWh/m3.
“The combination of Danfoss APP pumps, iSave ERDs and Vacon 100 Flow AC drives results in extremely significant energy savings,” explains Viera. “As we have seen elsewhere, the relatively short payback time makes a very compelling case for retrofitting older RO plants. When you also consider the advantages of improved reliability and lowered CO2 emissions, it’s clear that such retrofits are appealing to many RO customers.”