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Chemical-contaminated sites often contain intertwined heavy metals and organic pollutants, forming a complex contamination network between soil and groundwater. This not only slows down urban redevelopment but also poses long-term risks to human health. As safe land use becomes a core priority in ec

Chemical-contaminated sites often contain intertwined heavy metals and organic pollutants, forming a complex contamination network between soil and groundwater. This not only slows down urban redevelopment but also poses long-term risks to human health. As safe land use becomes a core priority in ecological protection, Densen Environment breaks away from the constraints of traditional remediation methods. Through flexible technical pathways and scenario-based solutions, we deliver a new model of “precision treatment + low-disturbance adaptation,” ensuring that every polluted site finds its own “restoration code.”

Adaptive, Eco-Friendly Technologies Designed for Complex Chemical Pollution

Densen Environment’s technological innovations are centered around adaptability and environmental responsibility. For chemical sites commonly plagued by heavy metal–organic compound co-contamination, we have developed customized collaborative remediation processes. By scientifically combining specialized washing solutions with oxidizing agents, the system removes heavy metals through physical scrubbing while simultaneously oxidizing and degrading organic pollutants—addressing multiple contamination types at once.

The equipment is engineered with the spatial constraints of chemical sites in mind. Featuring a foldable, integrated structure, it minimizes transport volume and unfolds rapidly upon arrival, making it suitable even for narrow urban locations. A key highlight is the full implementation of the resource recycling concept:

• Treated soil that meets standards can be reused for landscaping or backfilling.

• Washing effluent is purified through a closed-loop water treatment system and reused at a rate exceeding 95%.

• Separated pollutant residues undergo solidification and stabilization and can be safely disposed of or repurposed.

Targeting Industry Pain Points with Precision Remediation Technologies

Chemical-contaminated sites pose far greater challenges than ordinary polluted land. Contaminants are often diverse and complex—heavy metals combined with PAHs, SVOCs, and other compounds—and may penetrate dozens of meters into the subsurface. Many sites are located in urban cores or water protection zones, where low-disturbance operations and zero discharge are mandated. Traditional remediation approaches lack specificity, consume large volumes of chemicals, and risk secondary pollution, making it difficult to balance environmental performance with remediation outcomes.

Densen Environment precisely targets these pain points. With over 30 years of equipment manufacturing experience, we have developed soil washing technologies tailored for the complex conditions of chemical industrial sites. This has produced a dual-path approach of ex-situ precision treatment + in-situ collaborative control:

• For high-concentration, mixed-contamination areas:
  Modular, integrated soil washing systems achieve efficient pollutant separation and high removal rates.

• For sensitive areas or deep-layer contamination:
  In-situ chemical oxidation combined with washing reduces site disturbance while delivering targeted remediation—ideal for chemical park decommissioning, active industrial site pollution control, and varied application scenarios.

From Passive Cleanup to Active Urban Empowerment

Remediation of chemical-contaminated sites has evolved from “passive pollution control” to “active environmental empowerment,” becoming a crucial link in urban renewal and ecological conservation. Guided by the mission of “making every plot of land safely usable,” Densen Environment continues to explore the technological boundaries of remediation across diverse site conditions.

From precise pollution management in operational industrial parks, to rapid turnaround for decommissioned land, to deep remediation of historical contamination, we deliver customized, low-disturbance, and high-efficiency solutions.

Looking ahead, Densen Environment will continue advancing technological innovation, driving remediation equipment toward greater flexibility, intelligence, and sustainability. Our goal is to help more chemical-contaminated sites shed their environmental burdens and become valuable assets in urban ecological development—providing lasting momentum for green growth.