Our separators (often called interceptors) achieve two levels of final discharge into the drainage system. The bypass separator (class 1 discharge) is designed for larger, hard-standing areas, prone to hydrocarbon spillages. It retains hydrocarbon contaminants that enter the separator in the first 10% of any storm and achieves a final discharge to surface water drain of less that 5mg/l oil to water. Additionally, the bypass separator (class 2 discharge) offers a final discharge to surface or foul water drain and is 100ml/l oil to water.
The full retention separator is for more demanding applications such as fuel or storage points, plant hire equipment yards and vehicle dismantling workshops where the risk of hydrocarbon spillages is greater. It is also available to achieve both Class 1 and Class 2 discharge options.