The Challenge: Managing Hydrogen Sulphide in 100% Slurry Feedstock
Anaerobic Digestion (AD) plants utilising a 100% cow slurry feedstock face unique biochemical challenges. While an excellent source of renewable energy, high-volume slurry processing often leads to elevated levels of Hydrogen Sulphide.
Left unchecked, high Hydrogen Sulphide levels can:
- Corrode expensive CHP engines and infrastructure.
- Inhibit the biological health of the digestor.
- Lead to increased odor emissions on-site.
One of our recent agricultural clients needed a robust solution to manage these levels while improving the overall cost-efficiency of their chemical procurement.
The Solution: Precision Dosing via Tuffa 15000VB Bunded Tanks
To maintain optimal digestor health, the client utilises 40% Ferric Chloride. This chemical is dosed at low, controlled volumes to precipitate sulphur and keep gas quality within the required parameters.
However, purchasing chemicals in small quantities is often cost-prohibitive. Tuffa provided a dual-tank solution to transform their logistics:
- Bulk Capacity: By installing two Tuffa 15,000L Vertical Bunded (15000VB) Chemical Tanks, the farm gained the capacity to accept full artic delivery loads.
- Safety & Compliance: Built from high-grade, chemical-resistant polyethylene, the 15000VB provides secondary containment (bunding) to ensure total environmental protection—a critical factor for farm audits and environmental regulations.
- Seamless Integration: The tanks were designed to integrate with the plant’s existing dosing pumps, allowing for the precise, low-volume application required for the AD process.
Client Feedback
“The service from quote through to delivery and the quality of build puts Tuffa at the top.” — Neil Ridgway, Stowell Farms
The Result: Lower Costs, Better Biogas
By upgrading their storage infrastructure with Tuffa, the client has achieved three key operational wins:
- Operational Savings: The ability to buy Ferric Chloride in bulk artic loads significantly reduced the price per liter and decreased the frequency of deliveries.
- Enhanced Gas Quality: Consistent, controlled dosing has stabilised Hydrogen Sulphide levels, protecting the plant’s mechanical assets and enhancing biogas purity.
- Future-Proofed Storage: With a high-quality build and a design life of 20+ years, these tanks provide a long-term solution for the farm’s evolving renewable energy goals.
Does your AD plant or industrial site require specialised chemical storage to improve efficiency?
Contact our technical team today to discuss your project requirements at tuffa.co.uk/contact.
