Generators for Pumping Stations and Wastewater Treatment Plants

Product Description

Water supply and wastewater management depend on systems that need to remain operational during power outages. Pump shutdowns can disrupt water distribution, while equipment failures in sewer networks can lead to accumulation and overflows. Industrial backup generators support essential processes at pumping stations and wastewater treatment plants, helping maintain services and protect the environment.

Different requirements for pumping and wastewater treatment

In water supply systems, generators can support abstraction, transfer and pressure-boosting pumps, alongside equipment needed for water treatment and monitoring.

In sewer networks, backup power allows wastewater pumping stations to continue operating. Their importance can increase during periods of high flow, when available storage capacity can quickly be exhausted.

At wastewater treatment plants, backup requirements are determined by the treatment process. Alongside pumping, aeration, mixing and recirculation may be priorities to limit disruption to biological processes and deterioration in treatment performance.

Which loads need to be supported?

The equipment to be supplied is selected in consultation with the system designer and plant operator. Depending on the site, priority loads may include:

• Pumps: for raw water, treated water, wastewater or recirculation.
• Blowers and mixers: for aeration and maintaining the conditions needed for wastewater treatment.
• Treatment equipment: dosing, disinfection and other systems included in the treatment process.
• Automation and instrumentation: controllers, level, pressure or flow sensors, and supervisory systems.
• Auxiliary systems: ventilation, lighting and equipment needed for safe operation.

Priorities must reflect the consequences of each item of equipment stopping and the acceptable interruption time. Some operations can be postponed, while others must resume quickly to keep the facility functional.

How is a generator sized for pumps and treatment equipment?

Pump and blower motors can draw high starting currents. Generator sizing must account for running power, starting methods, the number of units operating simultaneously and their connection sequence.

Staged starting can reduce the demand placed on the generator. Where soft starters or variable-frequency drives are used, their behaviour must be assessed together with the power source. The assessment must also consider a pump restarting automatically while other loads are already connected.

Variable flow rates and planned expansions influence the final configuration. For facilities with high availability requirements, solutions incorporating multiple generators can be assessed according to the electrical architecture and redundancy needs.

Automatic controls, runtime and operational readiness

Transfer to generator power must be coordinated with process controls so that pumps and other equipment resume operation in the planned sequence. UPS systems can be integrated for controllers and communications equipment requiring uninterrupted power.

Runtime and refuelling access are particularly important at remote sites or locations that become difficult to reach during adverse weather. The positioning of the generator and fuel system must also account for flood risk.

Periodic tests must verify the entire power supply chain, from generator starting and transfer to load acceptance. Alarm monitoring and preventive maintenance help keep the system ready for an actual outage.

Best Tools solutions for water infrastructure

Best Tools Company provides Rehlko industrial generators and backup power solutions tailored to pumping stations, water treatment facilities and wastewater treatment plants, with consultancy, configuration, delivery and commissioning services.

Ongoing support includes preventive maintenance contracts, periodic inspections, load testing and service interventions, delivered through its technical team and nationwide network of mobile service units. Rental solutions are also available for planned works or temporary requirements.

Contact the Best Tools team to configure a backup power solution tailored to your facility.