Terrapure is a Canadian environmental services provider that serves customers in a wide range of industries, including petrochemical and refineries. One of Terrapure’s waste management solutions is centrifugation. A centrifuge is a machine with a rapidly rotating container that applies centrifugal force to its contents, separating liquids from
solids. Terrapure uses this application to help customers recover resources, reduce the volume of waste for disposal as well as reduce the costs and environmental impacts associated with transportation and disposal.
Traditionally, petrochemical and refinery sludge from tanks and wastewater treatment ponds is treated as waste and shipped offsite for costly hazardous waste disposal, the company says. Terrapure uses centrifuges to separate different components within a waste stream. The company recovers byproducts such as raw minerals, oil, and water
that can go back to customers for re-use at their facilities. Terrapure also brings its equipment to customer sites, reducing transportation and the associated environmental impacts and costs.
Terrapure operates 30 centrifuges of varying sizes that can process anywhere from 5,000 to 300,000 liters of material per hour. On average, Terrapure can reduce solid- liquid and liquid-liquid waste volumes by 65-85% while recovering the valuable oil and water components for reuse, the company says. For example, if a customer has 8 million liters of slurry–water mix, it needs to be removed from a tank and processed. Terrapure can use its centrifuges over a six-day period to reduce the volume of waste requiring transportation and disposal by 75%, down to 600 dry metric tons. This volume reduction leads to a significant reduction in costs and environmental impacts associated with transportation and disposal for the customer, according to Terrapure. The process also recovers oil and water for reuse, reducing the customer’s reliance on non-renewable resources.