Petro-PIT

The Principle of Intelligent Gravity-Fed Filtration

Understanding how these filter cartridges operate helps to better appreciate their role in industrial safety. Unlike active systems requiring pumps and electricity, these devices rely on gravity and polymer chemistry to operate fully autonomously.

Natural Drainage and Instant Locking

The process is based on a simple physical distinction between water and oil. Under normal conditions, rainwater flows freely through the system. The device is designed to allow sufficient flow capacity, preventing containment pit overflow during standard weather conditions. However, as soon as the filter media comes into contact with hydrocarbons, a reaction occurs. The internal component, a blend of oleophilic polymers, solidifies upon contact with oil. This transformation creates a watertight seal that instantly stops the flow. This mechanism turns the hydrocarbon filtration system into an automatic safety valve, preventing soil contamination.

Technology Designed for Climate Variations

Outdoor conditions vary, and your equipment must withstand them. Whether exposed to intense heat or freezing temperatures, filter performance must remain consistent. The robust design of the cartridges, often manufactured from UV-resistant and thermally resistant materials, ensures excellent durability. This resilience enables hydrocarbon-contaminated water filtration all year round without daily human intervention, reducing the operational burden associated with monitoring remote sites.

Securing Electrical Installations and Storage Areas

The use of these filters goes beyond simple water management; they are vital components for protecting critical infrastructure, particularly in the energy and industrial storage sectors.

Protection of Transformer Containment Pits

Electrical transformers filled with dielectric oils represent a major risk in the event of a leak. Containment pits, whether concrete or metallic, inevitably collect rainfall over time. Installing a Petro PIT filter at the drain valve outlet keeps these pits free from accumulated water, thereby preserving their full oil retention capacity in the event of an incident. It is a passive safeguard that protects the equipment investment while avoiding the extremely high costs associated with cleaning a contaminated site.

Management of Storage Areas and Mobile Equipment

Beyond high-voltage substations, other equipment also requires increased vigilance. Compressors, generators, and outdoor fuel storage tanks also benefit from this technology. Installing a hydrocarbon filter for industrial sites on the flexible or rigid containment systems surrounding this equipment ensures that stormwater discharges into the drainage network remain clean. This is particularly relevant for temporary construction site installations or refueling areas, where the risk of small accidental spills is frequent.

Environmental Compliance and Water Regulations

French and European regulations regarding industrial water discharges are strict. Compliance with these standards is not optional but an essential condition for the sustainable operation of any industrial site.

Compliance with Authorized Discharge Limits

Regulations require that water discharged into the environment contains only minimal hydrocarbon concentrations, generally below 5 mg per liter. An efficient hydrocarbon anti-pollution solution makes it possible to achieve purity levels well below these thresholds, often with visually undetectable residual content. By filtering water before it returns to the ground, companies demonstrate their environmental responsibility while avoiding severe penalties associated with groundwater contamination.

A Cost-Effective Alternative to External Pumping

Without an on-site filtration system, the only legal option is often to pump and treat the water using specialized service providers — a costly and repetitive operation. Integrating a passive oil-water separator changes the equation. By treating the issue directly at the source, there is no longer any need to call pumping trucks for rainwater merely contaminated by minor oil traces. This practical approach reduces maintenance costs while lowering the carbon footprint associated with transporting liquid waste.

Installation, Maintenance, and Equipment Selection

Simplicity is at the heart of operational efficiency. At Petro-PIT, we believe that the most reliable solutions are often the easiest to implement and maintain.

Installation on Existing Equipment

One of the major advantages of these systems is their adaptability. Whether you use a flexible containment bund, a concrete pit, or a metal containment tray, there is a suitable kit available. Installation is generally carried out directly on the existing drain valve, which is often standardized. Adding a pre-filter to retain leaves and sediments is recommended to prevent mechanical clogging of the stormwater hydrocarbon filter, thereby extending its operational lifespan.

Saturation Indicators and Replacement

Maintenance does not require advanced technical skills. A regular visual inspection is sufficient. If water no longer drains despite being present in the containment pit, the filter has fulfilled its role: it has blocked hydrocarbons and become saturated. The cartridge must then be replaced. This hydrocarbon containment device is designed for quick replacement, minimizing downtime. It is a predictable maintenance cycle that integrates naturally into the routine inspection rounds performed by your technical teams.

Effective environmental risk management relies on proven and easy-to-use equipment. By choosing the right hydrocarbon-contaminated water treatment equipment, you ensure the long-term sustainability of your installations while protecting the ecosystem. Our teams remain available to help define the appropriate sizing for your containment volumes and support you in bringing your sites into compliance.