IAPMO introduces a new standard for high-efficiency oil/water separators
New standard sets minimum performance level for manufacturers.
The International Association of Plumbing and Mechanical Officials (IAPMO) has published a new industry standard titled IGC 325: High-Efficiency Oil/Water Separators. This publication introduces a performance-based standard to the oil separator market and has created a new term for the industry: High-Efficiency Oil/Water Separator.
A High-Efficiency Oil/Water Separator is defined as a device installed in a drainage system that collects hydrocarbons from wastewater with a minimum 90% capture rate. To prove that the separator achieves 90% efficiency, it must be tested and certified to IAPMO IGC 325. Testing requires the separator to be tested in batches on a prescribed test apparatus at the unit’s maximum flow rate until the unit is holding its maximum oil capacity with an influent oil concentration of 1,000 parts per million. The effluent oil concentration must be below 100 parts per million to pass the performance requirement. Testing the unit until it is full ensures the unit will always meet the minimum performance requirement. The oil used in the standard is motor oil.