Industries
Water and wastewater: pumps and blowers that never stop.
Pumping stations and treatment plants run around the clock, and pumps and aeration blowers make up most of the bill. A pump that has worn, a blower running harder than the process needs or pumping through the evening peak costs money every hour. These are the lines to watch.
Your bill, line by line
| Bill line | Why it hits | What to watch |
|---|---|---|
| Energy | Pumps and blowers run 24 hours | Energy per cubic metre pumped or treated |
| TOD energy | Pumping through the evening peak when storage could carry it | Peak-hour units per pump set |
| Power factor or kVAh | Many motors at part load | PF per motor control panel |
| Motor health | Unbalanced voltage overheats motors | Voltage and current unbalance per pump |
Pumping stations and water treatment
Pumps are sized for the worst day and spend most days throttled or cycling. Wear in impellers and valves throttled to control flow raise the energy per cubic metre slowly, so the bill climbs without anyone noticing. Where storage allows, pumping in off-peak hours lowers the cost of every unit.
- Running hours and kW per pump set.
- Energy per cubic metre, with flow from the plant’s flow meter.
- Peak-hour pumping that storage could move.
Sewage and effluent treatment
Aeration blowers are usually the largest load in a sewage or effluent treatment plant, followed by pumps, mixers and sludge handling. Blowers running at full output when the inflow is low are the most common waste.
- Blower energy against inflow, hour by hour.
- Night load when the inflow falls.
- Dry running: a pump drawing far less than its normal running kW.
A worked example: moving pumping off-peak
A 75 kW pump that runs 4 hours a day in the evening peak uses 9,000 kWh a month in those hours. If storage lets it run in off-peak hours instead, and the tariff difference between peak and off-peak is ₹2 a unit, the saving is about ₹18,000 a month for that one pump.
The figures are illustrative; peak and off-peak hours and rates differ by state. See TOD tariff.
Water and wastewater in KONDUKTOR® EMS
- Live kW, current, voltage and power factor on every pump and blower panel.
- Running, idle and stopped time per pump, with low-load running visible.
- Voltage and current unbalance, with alerts on any reading crossing a limit you set.
- Peak, normal and off-peak units per meter, with the saving from moving pumping.
- Supply interruptions recorded with their duration.
Flow meters and level sensors with Modbus output connect to the same RS-485 network, and automatic pump scheduling through Modbus I/O cards is engineered for your plant as part of your project.
Common questions
How do we know a pump has lost efficiency?+
Track energy per cubic metre for that pump over months. If it rises while the head and flow stay the same, the pump or its valves are wasting energy. The meter gives the energy; the plant’s flow meter gives the volume.
Can energy monitoring detect a pump running dry?+
A pump running dry or against a closed valve draws much less power than normal. Setting its idle level in kW makes that state visible on the timeline, and an alert can fire on it.
Why does voltage unbalance matter for pumps?+
A few percent of voltage unbalance makes motor currents much more unbalanced, which heats the windings and shortens motor life. See phase imbalance.
See every pump, and what each one costs.
Book a live demo and see pump and blower energy on meters like yours.