Wastewater Treatment Plant Gets a Grip on Grease Receiving

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Grease is offloaded through the JWC HOT to screen out unwanted trash and debris.

In 2009, the Wastewater Treatment Plant of West Lafayette, Indiana seized revenue and energy-savings opportunities for the thousands of gallons of grease the facility receives per month. The treatment plant implemented a major upgrade and installed two microturbines to generate electricity to make use of the methane produced in their digesters. The plant also installed a grease receiving station to convey grease to the digesters to increase methane production for the microturbines.

The plant handles, on average, 18,000 gallons of grease per month, and the material varies widely in consistency and fluidity. Thick grease prevents heavy solids from settling in the metal trap, while thin grease allows most of the debris to flow through the grease tank uninhibited. The plant soon found that, without a grinder on the discharge side of the grease trap, debris from the thicker grease entering the grease tank would get pulled into the grease pump and cause blockage, severe damage and continual maintenance at a big expense to repair the pump.

To solve the problem, the plant installed a JWC Environmental Heavy Object Trap (HOT) in 2011. The HOT (model GRS) features an adjustable bar screen with ½ inch (12mm) spacings, ideal for catching debris before reaching the pump. As grease is unloaded from the truck, the debris is captured by the HOT bar screen and allows the grease to flow freely through the pump without process interruption.

Since the installation of the HOT, the plant has significantly reduced the amount of debris being discharged into the grease tank. Plus, the easy-to-clean bar screen has cut down on operator maintenance and repair expense, decreasing downtime for the facility.

For more information, visit our septage and grease receiving page or feel free to request a quote from us!

JWC Gets A Head Start On Greener Approaches To Waste Treatment

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JWC Gets A Head Start On Greener Approaches To Waste Treatment

Managers of wastewater facilities are discovering the benefits of receiving used grease and other high-strength organic wastes. As more and more utilities move toward greener approaches for waste disposal, JWC Environmental made sure to stay one step ahead of the curve.

JWC proudly announces the development of the Heavy Object Trap, model GRS, for grease receiving and screening. The system provides invaluable contributions to the ease, cleanliness, and overall functionality of a grease receiving system.

Many facilities are discovering mixing fats, oil, and grease with wastewater sludge increases the production of digester biogas. The biogas is then used to power turbines and generate electricity. The energy can serve the facility and be sold to others.

The Heavy Object Trap, also known as the HOT, features a variable bar screen with spacings of ½” or 1″ ( 12mm to 25mm) to capture and direct heavy objects such as rocks, silverware and trash into the debris basket. The largest basket can hold up to 2.2 ft3 (0.06 m3) of material.  The unique bar screen design and hot water washdown system* prevents screen blinding and allows high flow rates of grease. Continue reading…