As industrialization and urbanization accelerate, soil contamination from heavy metals and organic pollutants has become increasingly prominent, posing risks to ecosystems and human health. Effective soil remediation requires advanced, high-efficiency equipment. Desen Environmental’s modular soil-w

As industrialization and urbanization accelerate, soil contamination from heavy metals and organic pollutants has become increasingly prominent, posing risks to ecosystems and human health. Effective soil remediation requires advanced, high-efficiency equipment. Desen Environmental’s modular soil-washing system has emerged as a core solution for the reduction, separation, and purification of contaminated soils thanks to its strong processing capability and flexible design.

Five Integrated Functional Modules Form a Complete Remediation Workflow

Desen’s soil washing system consolidates nine core technologies into five coordinated functional modules. These modules work seamlessly together to create a full closed-loop treatment process—from contaminated soil input to compliant, safely treated output—significantly enhancing remediation efficiency and stability.

1. Feed & Pre-Treatment Module: Stable Feeding and Impurity Removal

This module combines a sealed feeding hopper with primary screening:

• Ensures continuous, uniform feeding for stable system operation

• Controls feed volume precisely to match equipment capacity

• Removes large impurities such as stones and construction debris

• Reduces dust-related secondary pollution

• Protects downstream equipment and ensures consistent process flow

2. Core Washing & Separation Module: Breaking Adsorption and Deep Pollutant Removal

This is the heart of Desen’s remediation technology. Through soil scrubbing, high-efficiency soaking, and fine classification, the system:

• Breaks apart soil aggregates via mechanical agitation and friction

• Injects tailored washing agents (chelating agents for heavy metals, solvents for organics)

• Performs particle-size-based soaking to maximize pollutant detachment

• Separates clean soil from contaminated fine particles and washing liquids

The treated soil meets reuse standards for landscaping, backfilling, and ecological restoration.

3. Solid-Liquid Deep Treatment Module: Volume Reduction & Pollution Control

Integrating deep-cone thickening and plate-and-frame filtration, this module:

• Concentrates contaminated solids via sedimentation and flocculation

• Reduces wastewater volume

• Presses sludge into low-moisture, high-strength filter cakes

• Enables safe, compliant disposal and minimizes secondary pollution

4. Water Recycling Module: Resource Reuse & Cost Reduction

Desen’s system includes a multi-stage water purification unit with filtration, adsorption, and oxidation processes. Treated water:

• Meets the standards for reuse in the soil-washing process

• Reduces freshwater consumption

• Minimizes wastewater discharge

• Lower overall operating costs while enhancing sustainability

This creates a closed-loop circulation system that benefits both the environment and project economics.

5. Intelligent Control Module: Precision, Automation, and Efficiency

Powered by a PLC central control system, the equipment:

• Real-time monitors operating data from all modules

• Visualizes system status via touchscreen interface

• Automatically adjusts washing parameters based on soil type and contamination level

• Reduces labor requirements

• Ensures stable, accurate, and fully automated operation

Core Advantages: Flexible, Efficient, and Suitable for Multiple Remediation Scenarios

By integrating the five major modules, Desen’s soil washing equipment:

• Efficiently reduces heavy metals and organic pollutants

• Minimizes waste volume and disposal cost

• Prevents secondary pollution

• Provides modular flexibility for site-specific customization

It is widely applicable in:

• Industrial contaminated sites

• Agricultural soil restoration

• Mining area ecological rehabilitation

• Brownfield redevelopment

Under the national push for ecological protection and land restoration, Desen Environmental’s soil-washing solution offers a practical, reliable, and scalable technology that will continue to support soil pollution control and safeguard environmental quality.