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Geared Motors Solution For A Wastewater Sedimentation Tank

Motors & Drives
Altra Motors for Wastewater Sedimentation Tank

Geared Motors Solution For A Wastewater Sedimentation Tank

The Houtrust wastewater treatment plant was built in 1967 and located in the Netherlands. This wastewater treatment plant needed to be refurbished to meet current environmental regulations. This maintenance project included the replacement of a geared motor that drives the chainwheel in one of its sedimentation tanks.

The original geared motor required a high degree of maintenance, demanding the tank’s basin be emptied twice a year. This resulted in production losses and high maintenance costs. The original supplier had designed a solution that employed a single-stage bevel gearbox fully submerged in the water. A tube was used to connect the gearbox to the rest of the power train, positioned above the water level. The tube connected to a pre-stage gearbox and an overload coupling, with a 0.55 kW motor driving the application.

Altra Wastewater Sedimentation TankDelfluent, the plant operator, contacted Bauer Gear Motor, based on Bauer’s proven track record of developing geared motors for challenging conditions. Bauer worked closely with its partner Vos Gekas & Boot (VGB), an expert in rotating equipment and a supplier familiar to the Houtrust facility.

The Bauer solution consisted of a BK70 bevel geared motor capable of operating continuously underwater. Bauer moved to a multi-stage geared motor from two, single-stage gears. The simplified solution made future maintenance easier. In addition, by removing the gear, the tube, and the coupling, Bauer reduced the oscillations in the system and provided a more energy-efficient solution.

Specific advantages of the BK series, besides IP protection against dust and water, include simple and cost-effective installation, high energy efficiency, robustness, and durability, low maintenance requirements, and low running costs.

Altra Geared MotorsHighlights

• BK Series helical bevel geared motor
• Hardened wear sleeve and spray ring ensure leak-free performance
• Complies with NA and International standards, including NEMA, IEC, CSA, and CE
• Torque rating to 18,500 Nm
• Completely enclosed, sealed against dust and moisture
• Corrosion protection Im2 for submersible operation
• IP68 Enclosure

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