1. Project Overview

The Niger Overseas Camp Wastewater Treatment Project is a key environmental infrastructure facility developed under China–Africa cooperation frameworks.

The project serves a remote overseas construction and operation camp, providing stable domestic wastewater treatment under extreme climatic conditions and limited infrastructure availability.

Considering the harsh environmental conditions in West Africa, including high temperature, unstable power supply, and limited local O&M resources, the system adopts a highly integrated underground wastewater treatment solution to ensure long-term stable operation and reclaimed water reuse.

2. Project Information

3. Client Challenges

The project presented significant operational and environmental constraints:

• Extreme high-temperature climate conditions in West Africa
• Limited local operation and maintenance resources
• Unstable power supply and grid fluctuations
• Large variation in camp population and wastewater load
• Tight construction and commissioning schedule
• High corrosion risk due to environmental conditions
• Requirement for water reuse within limited infrastructure systems

Core challenge:
Ensure stable, low-maintenance wastewater treatment in a remote, high-temperature, infrastructure-limited environment.

4. Our Engineering Solution

SYNERAQUA implemented a highly integrated, corrosion-resistant, modular wastewater treatment system designed for remote deployment.

Process Flow

Domestic Sewage → Screening → Equalization Tank → A²/O Biological Treatment → Secondary Clarification → Disinfection → Reclaimed Water Tank → Camp Reuse System

Engineering Strategy

• Underground integrated modular system for rapid deployment
• High corrosion-resistant materials and structural design
• Stable A²/O biological treatment process adapted to load fluctuations
• Compact footprint to suit limited site conditions
• Simplified operation model for minimal operator dependency
• Modular skid system enabling fast installation and commissioning

5. Key Technologies & Engineering Highlights

High-Temperature Resistant System Design

Special engineering adaptation for West African climatic conditions.

Anti-Corrosion Structural Engineering

Enhanced material selection and protection design for long-term durability.

Modular Integrated Wastewater Treatment System

Factory-prefabricated units enable fast transportation and deployment.

A²/O Biological Treatment Process

Stable nitrogen and organic removal under fluctuating influent conditions.

Low-Maintenance Operation Design

Optimized system architecture reduces reliance on skilled operators.

Intelligent Monitoring System

Real-time operational monitoring and remote diagnostic capability.

6. Performance Results

• Treatment Capacity: 200 m³/day
• Effluent Standard: GB/T 18920-2002
• Automation Level: Fully automated operation
• System Stability: >99%
• Operation Mode: Low-intervention, remote-supported operation
• Deployment Type: Rapid modular installation system

7. Project Value

The project delivers a robust and reliable wastewater treatment solution for overseas energy and infrastructure camps operating in challenging environments.

Key contributions include:

• Ensured long-term stable wastewater treatment in extreme conditions
• Achieved safe water reuse within camp infrastructure
• Reduced dependence on local skilled operators
• Minimized maintenance requirements and operational complexity
• Shortened construction and commissioning period
• Improved environmental compliance for overseas operations
• Enhanced sustainability performance of international engineering projects