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Data from the Ministry of Ecology and Environment shows that the exceeding standard rate of heavy metals in soils of some regions in China reaches 16.1%. Heavy metal pollutants such as cadmium, mercury, and arsenic threaten ecological security and public health through the "soil-plant-human&quo

Data from the Ministry of Ecology and Environment shows that the exceeding standard rate of heavy metals in soils of some regions in China reaches 16.1%. Heavy metal pollutants such as cadmium, mercury, and arsenic threaten ecological security and public health through the "soil-plant-human" chain. Facing this challenge, Desen Environment, based on years of environmental engineering practice, has innovatively developed modular intelligent soil washing equipment, providing a full-process and professional solution for heavy metal contaminated site remediation.

Technological Breakthroughs Over Traditional Methods

Traditional soil remediation technologies suffer from low efficiency, high risks of secondary pollution, and poor equipment adaptability. Desen's soil washing equipment achieves leapfrog technological breakthroughs:

※ Based on the principle of dynamic balance elution, it uses an independently developed multiphase flow mixing reactor to boost heavy metal elution efficiency to over 92%.

※ The modular skid-mounted design enables plug-and-play operation, with a single device capable of processing 500-2,000 m³ of soil daily.

※ The 5G+IoT intelligent control system monitors washing parameters in real time and dynamically adjusts reagent ratios and water flow rates via AI algorithms to ensure remediation precision.

Versatile Equipment System for Diverse Needs

Desen has created a "mobile + integrated" dual-form equipment system to meet different site requirements:

※ Mobile equipment with all-terrain chassis rapidly responds to sudden pollution incidents.

※ Integrated equipment adopts standardized modular design, supporting parallel operation of multiple units for large-scale governance of extensive contaminated sites.

For complex scenarios like lead-zinc mine waste residue pollution and smelter legacy sites, the equipment is equipped with a grading screening system and heavy metal directional adsorption module, enabling precise hierarchical treatment of contaminated soil and efficient enrichment/recycling of pollutants.

Proven Excellence in Real-world Applications

In a heavy metal mine remediation project in Hunan, Desen's soil washing equipment applied a three-stage process of "crushing & screening - chemical washing - solid-liquid separation", reducing cadmium content in contaminated soil from 5.8 mg/kg to 0.3 mg/kg—far exceeding the Soil Environmental Quality - Risk Control Standards for Soil Contamination of Agricultural Land. The project also shortened the cycle by 40% and reduced reagent consumption by 35%, setting a benchmark for heavy metal-contaminated soil remediation.

Currently, Desen's equipment has been applied in over 150 projects across 23 provinces in China, with a cumulative remediation of more than 8 million m³ of contaminated soil.

Commitment to Green Innovation & Circular Economy

Desen Environment upholds the philosophy of "technological innovation + green development", operating equipment in full compliance with the circular economy model:

※ Over 95% of washing wastewater is recycled after treatment by the heavy metal recovery system.

※ Generated heavy metal concentrates are processed with safe solidification technology to eliminate secondary pollution at the source.

Facing the battle against soil pollution, Desen Environment will continue to increase R&D investment, deepen the "intelligent equipment + smart operation and maintenance" service model, and contribute professional strength to safeguarding soil health and building ecological civilization. We sincerely invite partners from all sectors to join hands in constructing a new frontline for soil pollution prevention and control.