Our work
Municipal water plant cuts pumping energy by 23%
Client
Regional water utility
Industry
Water treatment
Location
Da Nang, Vietnam
Products used
NC-250
Challenge
A 30-year-old treatment plant ran twelve fixed-speed pumps against throttled valves to match demand. Energy was the largest operating cost line, and unplanned seal failures caused two supply interruptions in one year.
Solution
We resized the duty points from eighteen months of SCADA data, then replaced the fleet with twelve NC-250 units on VFDs — staged over three months without interrupting supply. Cartridge seals cut mean repair time from six hours to ninety minutes.
Measured results
-23%
Pumping energy per m³
18 mo
Payback period
99.7%
Availability since startup
“The staging plan mattered as much as the pumps. We never stopped supplying the city during the whole retrofit.”
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