Bund De-watering Filter
Manufactured in the UK by Cowens. Specialized bund de-watering filtration units engineered to remove accumulated rainwater from oil storage bunds, transformer sumps, and secondary containment areas without releasing hydrocarbons.
Bund Dewatering Filter Cartridges
Cowens bund de-watering filters feature hydrophobic oleophilic filter media that selectively allows clean water to discharge while instantly trapping free hydrocarbons, fuels, and sheen inside secondary containment bunds.
- ✔ Maintains 110% bund capacity by preventing rainwater accumulation
- ✔ Automatically shuts off or seals upon contact with free oil spills
- ✔ Reduces expensive hazardous waste tanker call-out costs
- ✔ Conforms to UK Control of Pollution (Oil Storage) Regulations
Gravity & Pumped Dewatering Systems
Designed for both gravity-fed drainage outlets and inline discharge lines on bund drainage pumps. Ideal for utility substations, temporary generator bunds, and bulk fuel storage sites needing continuous compliance.
- ✔ Easy installation on standard bund valves and discharge hoses
- ✔ High oil absorption capacity prior to cartridge replacement
- ✔ Heavy-duty, UV-stabilized housing built for continuous outdoor exposure
- ✔ Keeps site discharge well below Environment Agency oil PPM thresholds
Applications & Specifications
Essential pollution prevention for utility, industrial, and temporary fuel containment.
Primary Applications
- Oil & Fuel Storage Tank Bunds: Safely drains rainwater while containing fuel leaks.
- Electricity Substations: Drains transformer bunds without releasing dielectric insulating oil.
- Construction Site Generators: Gravity-fed oil filter protection for temporary bunded plant.
- Industrial Chemical Storage: Prevents contaminated water build-up in containment areas.
Key Engineering Features
- Hydrophobic Smart Media: Repels water while retaining hydrocarbons for maximum efficiency.
- Fail-Safe Auto Blockage: Solidifies upon major oil exposure to stop catastrophic spills.
- Low Maintenance: Easily inspectable filter elements with simple replacement procedures.
- Environment Agency Compliant: Satisfies PPG2, PPG26, and UK site pollution prevention guidelines.
Need Bund De-Watering Filters or Technical Support?
Cowens manufactures bespoke oil containment and dewatering filter systems. Contact our technical sales team in Carlisle for site-specific advice, sizing, or fast UK delivery.
