Wastewater treatment plants should never stop operating because the health of humanity depends on them. Treatment processes must run 24/7 to handle incoming wastewater. Gearboxes help ensure these systems run reliably, but wastewater treatment environments are extremely harsh for mechanical equipment.

How gearboxes keep wastewater treatment plants running:

• Continuous operation: Gearboxes allow motors to deliver the controlled torque and speed required by mixers, aerators and clarifiers
• Process stability: Gearboxes help maintain stable aeration levels, consistent mixing and controlled sludge movement — essential for biological treatment systems to function properly
• Environmental compliance: Reliable gearbox-driven equipment helps ensure that treated water meets environmental discharge standards for pollutants such as biological oxygen demand (BOD), suspended solids, nutrients and pathogens

Why gearboxes fail in wastewater facilities:

• Corrosion: Moisture, hydrogen sulfide gas and chemicals used in treatment processes cause corrosion of gearbox housings, shafts and internal components
• Water intrusion: Water contamination inside gearboxes, often from seal failures, can cause oil emulsification, loss of lubrication, bearing damage and accelerated gear wear
• Continuous operation: Nonstop operation for years leads to gear fatigue, bearing wear and lubrication breakdown
• Overloading: Mechanical resistance from sludge buildup or debris can overload drives and lead to gear tooth damage, shaft failures and coupling damage
• Inadequate maintenance: Because many drives operate slowly and quietly, developing problems can go unnoticed and progress into major mechanical failures

The consequences of wastewater treatment plant gearbox failures:

• Treatment process disruptions
• Environmental violations leading to regulatory fines, environmental penalties and increased regulatory scrutiny
• Pumping system failures potentially causing sewer backups, system overflows, emergency maintenance situations
• Damage to connected components such as mixer shafts, aerator assemblies, clarifier arms and pump systems
• Extended downtime to repair or rebuild large clarifier drives and other specialized wastewater gearboxes — taking weeks without experienced gearbox repair services.

We work on any and all brands of mixer/agitator drives, aerator drives, pump drives and other process-critical rotating equipment used in the wastewater treatment process — with the capability of reverse-engineering all components to equal or better quality than original. Our Field Machining and Services crews can perform in place a range or process-critical services, from gearbox inspections and rebuilds to line boring, journal turning and face and base milling.