# DS-MSW Mobile Soil Washing Plant for Oil Contaminated Soil Remediation in Abu Dhabi – Case Study## IntroductionOil contamination in soil poses serious environmental and health challenges, especially in oil extraction zones where crude oil leaks, drilling operations, or underground tank spills
# DS-MSW Mobile Soil Washing Plant for Oil Contaminated Soil Remediation in Abu Dhabi – Case Study
## Introduction
Oil contamination in soil poses serious environmental and health challenges, especially in oil extraction zones where crude oil leaks, drilling operations, or underground tank spills occur. In the Middle East — particularly countries like UAE, Saudi Arabia, Qatar — industrial growth demands effective in-situ remediation solutions that combine efficiency, mobility, and environmental compliance.
The **DS-MSW series Mobile Soil Washing & Remediation Equipment** represents Desen Environment's flagship mobile treatment solution, designed for rapid deployment and high-efficiency cleaning of oil-contaminated soil without the need for permanent infrastructure. This case study documents its successful application in **Abu Dhabi, United Arab Emirates**, demonstrating how Desen's technology delivers measurable results under extreme field conditions.
## Project Overview
| Parameter | Detail |
|-----------|--------|
| **Location** | Abu Dhabi, UAE (Oilfield Extraction Zone) |
| **Client** | [Client Name], UAE Oil & Gas Sector |
| **Project Duration** | 2025 – Ongoing |
| **Soil Volume Treated** | ~100,000 m³ (~3.5 million tons) |
| **Contaminant Level** | Average oil content: 8% by weight |
| **Equipment Model** | DS-MSW-100 Mobile Soil Washing Plant |
| **Treatment Process** | Thermochemical washing + biological remediation |
| **Resulting Oil Content** | ≤2,000 mg/kg (compliant with UAE environmental standards) |
| **Operational Uptime** | >6 months continuous stable operation |
## Background and Challenge
The project site is located in an active petroleum extraction zone of Abu Dhabi. Years of oilfield operations left large areas of soil contaminated with crude oil, heavy hydrocarbons, and drilling residues. The local government mandated a comprehensive remediation program to bring the land back into productive use — whether for agriculture, construction, or urban development.
The project faced multiple challenges:
1. **High contamination levels:** Average oil content of 8% by weight requires intensive washing with high water efficiency.
2. **Harsh climate conditions:** Summer temperatures frequently exceed 50°C (122°F), demanding equipment that can operate reliably under extreme heat and dry air.
3. **Limited infrastructure:** The site lacked permanent utilities — no stable water supply, limited electrical grid access, and restricted transport routes.
4. **Strict environmental regulations:** UAE's Ministry of Climate Change and Environment enforces strict waste handling and water recycling standards, requiring a zero-discharge system.
These factors called for a solution that could be quickly deployed, operate autonomously, handle high-contamination loads, and comply with local compliance standards.
## Solution: DS-MSW-100 Mobile Soil Washing Plant
Desen Environment delivered the **DS-MSW-100** unit, integrated within a standard shipping container for easy transport via road, rail, or sea. This modular skid-mounted design allows for:
- **Rapid deployment:** Full setup in ≤24 hours upon arrival
- **Minimal footprint:** Operating area ≈1,200 m² (40m × 30m × 9.5m)
- **Fully integrated system:** Feeding, screening, scrubbing, solid-liquid separation, and wastewater treatment modules in one unit
- **Water recycling:** ≥90% water reuse ratio with closed-loop circulation
- **Low secondary pollution:** All waste streams (sludge, treated water, cleaned sand) meet regulatory standards for discharge or re-use
### Technical Specifications
| Feature | Specification |
|---------|--------------|
| **Processing Capacity** | 10–15 tons/hour (configurable to 30+ with parallel units) |
| **Power Requirement** | 300 kW (actual consumption ~70%) |
| **Water Consumption** | 3–5 m³/h (recyclable) |
| **Operating Temperature Range** | -10°C to +60°C |
| **Control System** | PLC automation + DCS distributed control with 5G remote monitoring |
| **Dimensions (L×W×H)** | 14,500 × 2,700 × 4,200 mm (mobile module) |
| **Total Weight** | ~28 tons |
| **Towing Requirement** | Standard flatbed trailer with 17.5m clearance |
The DS-MSW-100 employs a **thermochemical washing process**, using heat-assisted solvent and surfactant injection to break down hydrocarbon bonds, making them easier to wash out of soil matrices. This is followed by multi-stage screening, slurry dewatering, and advanced wastewater treatment — including sedimentation, chemical reaction tanks with aeration and dosing, and sand recovery.
## Process Flow
The remediation workflow integrates several proven technologies:
1. **Pre-screening:** Large debris removal via vibrating bar screen (5-layer high-manganese steel bars for wear resistance)
2. **Mechanical Scrubbing:** Rotary drum scrubber using elastic liners to enhance attrition and pollutant desorption
3. **Hydrocyclone Classification:** Separation of coarse clean sands (reused on-site) vs. fine slurry
4. **Slurry Concentration & Dewatering:** Deep-cone thickener + plate/frame filter press for high-capacity solids removal
5. **Wastewater Treatment:** Multi-stage settling → chemical precipitation → aeration/bio-reactors → clear water recycle back to process
The result is a "zero-discharge" operation: treated water returns to the system; clean sand can be reused locally; dewatered sludge cakes are transported off-site for safe disposal or incineration.
## Project Performance and Results
After more than 6 months of continuous operation:
- **Oil Recovery:** ≈5,000 tons of recoverable crude oil extracted from soil
- **Compliance Achievement:** Final soil oil content reduced to ≤2,000 mg/kg, meeting UAE EPA requirements
- **Operational Stability:** No major breakdowns reported; average uptime >95%
- **Energy Efficiency:** PLC-driven smart controls optimize water flow and energy use based on real-time contaminant load
- **Environmental Safety:** All wastewater discharged or reused with turbidity <10 NTU and pH within regulatory limits
Client feedback has been highly positive, citing the equipment's reliability under extreme heat, its ability to run without external utilities beyond a generator, and its consistent output quality.
## Why Choose DS-MSW for Middle East Remediation Projects?
| Advantage | Benefit |
|-----------|---------|
| **Mobility** | Quick relocation between sites; supports multi-project execution |
| **Portability** | Fits standard shipping containers; ideal for landlocked or remote sites |
| **Adaptability** | Handles diverse contaminants: hydrocarbons, heavy metals, organics |
| **Efficiency** | High processing rate (10–30 t/h) reduces project duration by up to 80% vs. traditional methods |
| **Compliance Focus** | Fully meets ISO and local environmental regulations (UAE, Saudi Arabia standards) |
| **After-Sales Support** | 24/7 remote diagnostics; rapid spare parts delivery across the region |
Desen Environment's track record includes over **1,000+ industrial clients** in 100+ countries, with particular strength in the Middle East. Our projects have addressed oil spill cleanups, refinery decommissioning, drilling rig decontamination, and post-disaster soil remediation — delivering measurable ROI while protecting communities and ecosystems.
## Conclusion & CTA
The Abu Dhabi project demonstrates that **DS-MSW** is more than just equipment — it's a complete soil remediation solution built for the Middle East's unique environmental and operational demands. Whether you're operating in oilfields, industrial zones, or brownfield redevelopment sites across UAE, Saudi Arabia, Qatar, or other GCC nations, Desen's mobile washing systems offer fast deployment, high efficiency, and proven results.
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