Industrial Wastewater Oil and Grease Removal

Industrial Wastewater Hydrocarbon Sources

Industrial wastewater from machining shops carries cutting fluid, hydraulic fluid, and machine lubricant; metal processing wastewater carries rolling oil and quench oil; automotive plants generate paint shop wastewater with solvents and metallic pigments. Each stream has its own hydrocarbon profile but they share the same treatment requirement: oil and grease below the municipal sewer consent (typically 10 to 30 mg/L) or below the site reuse specification.

CPI Plus Coalescer Train

The SorbiTech industrial oil and grease train stages a CPI oil water separator for the free oil and settleable solids, followed by a coalescing filtration skid for the dispersed oil. Outlet oil falls below the municipal sewer consent on a continuous basis. For sites with a reuse loop, the polished water returns to the wash bay or the process at controlled quality.

Emulsified Oil Requires Chemical Pre Treatment

Soluble cutting fluids and surfactant stabilised oils form stable emulsions that the gravity and coalescing stages cannot break. A chemical demulsification stage (acid plus polymer dosing, or membrane filtration) sits upstream of the CPI for these streams. The SorbiTech process engineering team identifies the emulsion stability at the design phase and sizes the chemical stage accordingly.

Delivery

Delivered as a packaged skid by SorbiTech for direct integration into the existing wastewater treatment plant, or as part of a complete effluent treatment plant by SorbiTech. Sector coverage is industrial water treatment across manufacturing, metalwork, automotive, and process plants.