1. Simple grease trap, also known as static grease trap, is usually a simple structure made of concrete or reinforced concrete, which mainly separates grease from sewage by gravity.

2. cyclone oil separation tank, which uses the mechanical principle of cyclone to rotate and separate sewage from oil and water to achieve the purpose of oil separation.

3. Air-floating oil separation tank, in which gas is injected into sewage to make bubbles float, contact with suspended substances in sewage, bring them to the liquid surface to form foam, and then scrape the foam out of the tank to achieve the purpose of oil separation.

4. Combined with the advantages of various oil-gas separation floating pools, a combined oil-gas separation floating pool is designed to meet the actual needs, which can achieve better oil separation effect and treatment efficiency.