Sustainable Biological Biogas Treatment: CRA's CE-Compliant Package for Zambia
CRA was awarded the design, engineering, manufacturing, inspection, supply, and commissioning of a complete biological biogas scrubbing system for VA Tech Wabag Ltd. as part of an export wastewater treatment project in Zambia. The system was built to CE certification standards, ensuring full compliance with international safety, design, and operational requirements for global deployment. Delivered as a fully integrated package — scrubber, blowers, instrumentation, piping, and controls — the scope ran from engineering design through to commissioning, with detailed technical submittals aligned to both client and export compliance requirements.
Meeting International Compliance Standards for an Export Biogas Treatment Project
VA Tech Wabag required a biological biogas scrubbing system that could be engineered, certified, and deployed for a wastewater treatment facility in Zambia — a project where compliance with CE marking requirements was non-negotiable. The system needed to meet a defined outlet H₂S target of below 200 ppm while satisfying the documentation demands of an international export project and being commissioned reliably in a remote deployment context.
- CE certification compliance across design, fabrication, and documentation
- Outlet H₂S below 200 ppm in continuous biogas service
- Complete engineering documentation for export regulatory sign-off
- Reliable commissioning in a remote international deployment
- Integration of scrubber, blowers, instrumentation, and controls into a single skid package
A Fully Integrated, CE-Compliant Biological Scrubbing Package
CRA engineered, supplied, and commissioned a complete biological biogas scrubber system purpose-built to meet CE certification requirements, a sub-200 ppm H₂S outlet specification, and the operational demands of the Zambia wastewater treatment project.
Core system delivered
- Biological scrubber unit with optimised gas-liquid contact design for consistent H₂S removal
- Blowers package for controlled biogas flow through the scrubbing system
- Instrumentation and control systems for continuous, automated operation
- Interconnecting piping designed and fabricated to CE standards
- Integrated package skid for streamlined installation and commissioning
Engineering and documentation scope
- General Arrangement (GA) drawings and mechanical design deliverables
- Electrical and wiring diagrams to CE marking requirements
- Inspection documentation and quality records
- Complete technical submittals aligned with client and export compliance requirements
CE-Certified, Export-Ready System — On Scope, On Compliance
- Outlet H₂S consistently below 200 ppm target specification
- Complete biological scrubbing package engineered and commissioned to CE certification standards
- Full technical documentation package delivered for client and regulatory sign-off
- Integrated design reduced site installation complexity and coordination scope
- System operating continuously for biogas cleaning and conditioning at the Zambia facility
Engineering Depth Meets International Compliance
This project demonstrates CRA's capability to deliver purpose-engineered biogas treatment systems to international certification standards for export deployments. By combining in-house design engineering, CE-compliant manufacturing, and end-to-end commissioning, CRA provided VA Tech Wabag with a fully integrated, globally deployable biological scrubbing package — meeting both the technical specification and the compliance requirements of an international project.
The project reinforces CRA's position as a supplier of choice for international contractors requiring engineering depth, compliance rigour, and on-site delivery in biogas treatment systems.
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