Biogas Dehumidification Through Automated Moisture Trapping for Tuas Water Reclamation Plant, Singapore
CRA successfully executed the design, engineering, manufacturing, and supply of an automatic moisture trap system for the Tuas Water Reclamation Plant (WRP) project in Singapore. The system was engineered to ensure safe and reliable removal of condensate and entrained moisture from biogas pipelines, protecting downstream process equipment and maintaining gas line integrity. Designed for continuous operation under low-pressure conditions, the moisture trap plays a critical role in biogas conditioning and overall plant reliability.
Managing Moisture in Low-Pressure Biogas Lines
Biogas streams at wastewater treatment facilities carry entrained moisture that can condense within pipelines, creating operational and safety risks for downstream systems.
- Condensate accumulation leading to corrosion and material degradation
- Risk of blockage and flow instability in biogas pipelines
- Potential damage to compressors, blowers, and gas analyzers
- Requirement for continuous operation without manual drainage
- Compliance with safety and environmental standards at Tuas WRP
Engineered Automatic Moisture Trap System
CRA delivered a purpose-engineered moisture trap system designed for reliable condensate separation and automated drainage in biogas service.
- Custom-designed moisture trap vessel for biogas applications
- Automatic drain arrangement enabling unattended operation
- Low-pressure drop design preserving gas line performance
- Compact configuration for seamless pipeline integration
- Engineered for long-term reliability in wastewater environments
Reliability Through Simplicity
The system was engineered with a focus on robust mechanical design, operational reliability, and minimal maintenance under continuous service conditions.
- Vessel sizing optimized for effective condensate knock-out
- Internal geometry preventing moisture re-entrainment
- Design validated for specified pressure and service conditions
- Fail-safe drainage philosophy to avoid manual intervention
- Emphasis on gas integrity and downstream protection
Controlled Fabrication and Testing
CRA executed manufacturing under strict quality controls to ensure consistency, safety, and mechanical integrity.
- Fabrication in accordance with approved engineering drawings
- Material selection suitable for wet biogas service
- Weld inspection and dimensional verification during production
- Pressure testing conducted at specified test conditions
- Functional validation of automatic drain mechanism
Stable and Reliable Moisture Removal
The supplied system delivered consistent moisture separation, enhancing biogas line reliability and downstream equipment protection.
- Effective removal of condensate from biogas pipelines
- Improved operational reliability of downstream systems
- Automated operation reducing maintenance requirements
- Stable performance under normal and upset conditions
- Enhanced process safety and equipment life
Strengthening Biogas System Reliability at Tuas WRP
This project highlights CRA’s capability to deliver engineered biogas conditioning solutions tailored to wastewater treatment applications.
- Demonstrated expertise in biogas moisture management systems
- Delivered a reliable, low-maintenance solution for continuous operation
- Supported long-term protection of critical downstream equipment
- Aligned with safety and environmental compliance requirements
- Reinforced CRA’s role as a trusted engineering partner for WRP projects
Related Case Studies
See how we turn hard problems into high-performance infrastructure.