Unlock additional value from gas, heat, water and digestate streams through process engineering, resource recovery and targeted technology integration.
A biogas plant is not only a digester. Gas composition, thermal flows, water recirculation and digestate handling determine how much economic value the complete installation can generate.
Biogas upgrading separates a CO₂-rich stream that may represent an additional feedstock instead of a final emission stream.
Evaluate whether the CO₂-rich stream from gas upgrading can be used as a feedstock for additional methane production, without expanding the fermenter or increasing substrate input.
Potential lever: additional biomethane / carbon utilizationLiquid and solid digestate can drive transport, storage and disposal costs while still containing recoverable water and nutrients.
By recovering water and nutrients from digestate, this waste-to-value approach turns a cost center into a revenue stream — reducing disposal expenses while generating marketable fertilizer and process water outputs.
Potential lever: water, nutrients and marketable productsDigester heating and process operations continuously lose thermal energy through exhaust gas, radiation, and effluent streams, representing an unused energy source rather than an unavoidable loss.
Recovering waste heat — via heat exchangers or heat pumps — can cover a significant share of the plant's own digester heating demand, cutting operating costs while improving overall energy efficiency.
Potential lever: lower utility demand and operating costsThe first step is not selecting a technology. We establish the mass and energy balance, identify economically relevant losses and only then define the engineering measures and integration scope.
Review AD, gas upgrading, CHP, digestate separation, storage, water loops and utilities. Establish the current mass and energy balance.
Evaluate heat recovery, substrate heating, digestate-to-feed exchange, water reuse and utility reduction opportunities.
Assess nutrient recovery, liquid and solid digestate upgrading, drying concepts, transport reduction and potential marketable products.
Where technically and economically justified, evaluate additional biomethane production and ZCT technology integration into existing infrastructure.
A first technical screening helps identify which process streams and optimization pathways deserve closer evaluation.