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Throughout the oil and gas extraction, storage, transportation, and refining process, crude oil leaks can cause severe and widespread soil contamination, leaving sticky hydrocarbons deeply attached to soil particles. This contamination damages soil structure, slows ecological recovery, and poses lon

Throughout the oil and gas extraction, storage, transportation, and refining process, crude oil leaks can cause severe and widespread soil contamination, leaving sticky hydrocarbons deeply attached to soil particles. This contamination damages soil structure, slows ecological recovery, and poses long-term risks to groundwater, ecosystems, and surrounding environments.

In regions such as the Middle East and Central Asia, remediation becomes even more challenging. Sandy soils feature high porosity and permeability, allowing oil contaminants to penetrate deeper and spread faster. Conventional remediation methods often struggle to remove stubborn hydrocarbons, while the treatment of high-solid-content oily sludge remains one of the industry's most difficult technical challenges. Traditional equipment frequently suffers from low efficiency, limited adaptability, and inconsistent treatment performance.

To solve these challenges, Desen Environmental has developed an advanced Compact Modular Thermal Soil Washing & Remediation System, combining thermal treatment with physical soil washing technology to effectively restore heavily oil-contaminated sandy soil and high-solid oily sludge. The system delivers a high-efficiency, integrated remediation solution for overseas oilfield contamination projects.

Advanced Thermal Washing Technology for Difficult Oily Soil Remediation

Unlike traditional soil washing equipment, Desen’s innovative system uses a hybrid thermal washing process, specifically engineered for high-solid, semi-solid, and heavily contaminated oily sludge.

By integrating precise temperature control with high-performance washing agents, the equipment effectively breaks the bond between oil contaminants and soil particles. Sticky crude oil, asphaltic residues, and stubborn hydrocarbons are efficiently separated from sandy soil while simultaneously completing:

• Thermal soil washing

• Physical contaminant separation

• Oil–water–solid separation

• Recovered oil recycling

• Soil purification and restoration

Compact Modular Design for Fast Global Deployment

Built with a highly integrated modular structure, the system offers compact layout, flexible mobility, and rapid deployment, eliminating the need for large-scale civil construction.

This makes it ideal for demanding environments such as:

• Remote oilfields

• Mining and energy production sites

• Cross-border remediation projects

• Desert and sandy terrain operations

The equipment can be quickly transported and commissioned, significantly reducing project startup time while maintaining stable performance in complex field conditions.

Designed for Sandy Soil & High-Solid Oily Sludge

Specially optimized for high-solid-content oily sludge and sandy contaminated soils, the system maintains stable processing capacity and strong material compatibility.

Key performance advantages include:

✔ Efficient removal of stubborn petroleum hydrocarbons
✔ One-time treatment of heavily contaminated soil
✔ Reduced remediation cycle and project costs
✔ High compatibility with loose sandy soils
✔ Recovered crude oil for resource reuse

After treatment, purified soil meets remediation standards and can be backfilled or revegetated on-site, creating both environmental and economic value.

Closed-Loop, Low-Emission, Environmentally Compliant Operation

The system operates under a fully enclosed control process, ensuring:

• No oil vapor leakage

• No wastewater discharge

• No secondary contamination

Designed to meet strict international environmental standards, the equipment supports sustainable remediation in environmentally sensitive and highly regulated regions.

Its intelligent automation system precisely adjusts temperature, chemical dosing, and water flow parameters, minimizing manual intervention and ensuring stable operation even under extreme heat, desert winds, and harsh outdoor conditions.

Empowering Global Oilfield Environmental Restoration

As demand for oil-contaminated soil remediation continues to grow worldwide, Desen Environmental is helping overcome the limitations of traditional remediation technologies through modular thermal washing innovation.

By providing an efficient, energy-saving, and resource-recovery-focused solution, Desen supports ecological restoration across global oil-producing regions—demonstrating the strength of advanced environmental equipment engineered for real-world challenges.

Desen Environmental – Smarter Thermal Soil Washing Solutions for Cleaner, Safer Oilfield Environments.