Application is Everything: Tackling Extreme Wastewater Conditions at a University Research Facility

In environments where extreme heat, grease, oils, and solid waste converge, equipment failure is common—unless the right solution is applied. One such challenge occurred at a university research school in the New England area, where persistent failures in their wastewater drainage system were disrupting operations.

The Challenge

The facility relied on submersible pumps to drain water and waste from a wastewater pit, which was regularly filled with:

• Very hot water (often exceeding 140°F),
• Sand, dirt, fats, oils, grease (FOG),
• And solid debris such as wrappers, plastic bags, and paper cups.

Most submersible pump motors are not designed to operate in these conditions. Standard motors typically have a maximum temperature tolerance of less than 140°F, which was regularly exceeded. Moreover, grease and chemical agents in the wastewater were corroding the piping, and fat saturation was compromising the pump cables. These factors led to frequent breakdowns and high maintenance costs.

The Solution

Gustavo Preston proposed a more robust, application-specific solution: the American-Marsh Trash Pump.

Unlike submersible pumps, the trash pump remains above ground, away from direct contact with harsh wastewater. The system uses submerged steel piping to draw liquid and solid waste from the pit into the pump through suction. Key benefits included:

• Temperature resistance: Since the motor isn’t submerged, it’s not exposed to the high temperatures of the wastewater.
• Solids handling: Capable of pumping large solids without clogging.
• Corrosion resistance: With proper material selection, the exposed steel piping offered greater resistance to chemical and grease-based corrosion.
• Reduced cable failure: No need for submerged cables means less risk of fat saturation and cable degradation.

The Result

The American-Marsh Trash Pump provided the university with a durable and reliable solution that significantly reduced downtime, minimized maintenance, and handled the unique demands of their wastewater environment. Application-specific thinking and a well-matched solution proved that when the environment is harsh, engineering with context in mind is everything.