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In contaminated site remediation projects, project owners are primarily concerned with three critical questions:Can the treated soil be safely reused? Will the remediation process cause secondary pollution? And can equipment operate efficiently in confined or complex sites?Focusing on real-world rem

In contaminated site remediation projects, project owners are primarily concerned with three critical questions:
Can the treated soil be safely reused? Will the remediation process cause secondary pollution? And can equipment operate efficiently in confined or complex sites?
Focusing on real-world remediation challenges, Desen Environmental enhances the safety performance and site adaptability of its soil washing equipment through continuous technological innovation. The result is a reliable, low-risk, and highly flexible solution that ensures compliant soil reuse, eliminates secondary pollution through closed-loop design, and overcomes site constraints with modular engineering.

Safe Soil Reuse with Stable Compliance Performance

Achieving safe reuse of remediated soil depends on consistent compliance with environmental standards. Desen soil washing systems adopt a dual purification process combining core washing & separation with secondary precision refinement. Targeted soil washing technology effectively removes heavy metals and organic contaminants from soil particles, followed by fine screening and classification to eliminate residual impurities.
The treated soil meets reuse standards and can be directly applied for landscaping, site backfilling, and land redevelopment. With customized parameter adjustment, the soil can also be prepared for agricultural use, achieving true “remediation with immediate reuse” and restoring the ecological and economic value of contaminated land.

Closed-Loop Process Design to Eliminate Secondary Pollution

To address potential risks such as dust emissions, wastewater, and sludge generation during remediation, Desen equipment is engineered with a full-process closed-loop pollution control system.
Sealed material feeding and conveying structures effectively suppress dust dispersion at the source. Contaminated washing liquid is treated through a three-stage purification process—concentration, filter press dewatering, and water treatment—achieving over 90% water recycling, with remaining treated water discharged in compliance with environmental regulations.
Sludge is dewatered and solidified before being handled according to standard industrial waste disposal requirements. Throughout the entire operation, no pollutants are released into the surrounding environment, fully eliminating the risk of “secondary contamination” commonly associated with traditional remediation methods.

Modular Design for Efficient Operation in Confined Sites

Desen soil washing equipment features an innovative modular system architecture, integrating key functions such as feeding pre-treatment, core washing, and solid-liquid separation into five independent functional modules. These modules can be freely dismantled and recombined, allowing flexible layout without the need for permanent facilities.
Even in narrow sites such as residential areas, former industrial plants, and fuel station sites, the system can be efficiently deployed. Standardized quick-connect interfaces simplify hydraulic, electrical, and pipeline connections, enabling installation and commissioning within 1–2 weeks, improving deployment efficiency by more than 80% compared to conventional fixed plants.
For cross-regional projects, the modules can be transported using standard freight vehicles and rapidly reassembled on-site, making the system ideal for multi-site, continuous remediation operations.

From ensuring safe soil reuse to preventing secondary pollution, and from overcoming spatial constraints to accelerating project timelines, Desen Environmental soil washing equipment is designed around user needs and operational realities. Widely applied in industrial site remediation, former gas station cleanup, and agricultural soil improvement, Desen systems deliver compliant and stable remediation outcomes while reducing construction complexity and environmental risk—making them a preferred solution for modern contaminated site remediation projects worldwide.