Digestate Dryer Manufacturer in Germany
See how we dry Digestate FibreLooking for digestate dryers manufacturers in Germany? STRONGA builds FlowDrya lines to order at its Hertfordshire works and supplies them to Germany — see the regulatory and economic context below.
We build FlowDrya digestate fibre dryers to order at STRONGA's Hertfordshire works and ship them to German anaerobic-digestion operators, though no FlowDrya digestate line has been commissioned in the country yet. Drying matters here because separated digestate is a nitrogen-rich organic fertiliser, and under the Düngeverordnung a farm may apply no more than 170 kilograms of nitrogen per hectare a year, with a closed application period through autumn and winter. Reducing wet fibre from over 60% moisture to below 20% concentrates and stabilises its nitrogen and phosphate, letting an operator store the material through the closed period and place it as a documented product rather than over-spreading nearby. Because separated fibre runs acidic and ammonia-laden, every machine carries a stainless-steel package.
Supplying Germany
We supply Germany from our Hertfordshire works — we have no documented Digestate Fibre installation in Germany yet.
Regulatory context
The Kreislaufwirtschaftsgesetz (KrWG, Circular Economy Act) is Germany's framework waste statute and transposes the EU Waste Framework Directive into national law. Its section 6 fixes a five-step waste hierarchy — prevention, preparation for re-use, recycling, other recovery including energy recovery, and only then disposal — so an operation that dries wet residue into a fuel or a soil product counts as recovery and ranks above burial in the legal order rather than heading for a landfill.
Source: https://www.gesetze-im-internet.de/krwg/ · checked 2026-08
Since 2005 Germany has banned the landfilling of untreated municipal and high-organic-content waste. Under the Deponieverordnung (Landfill Ordinance) household-like waste must be pre-treated — by incineration or mechanical-biological treatment, and held below strict limits on organic-substance content — before any residual may be buried, which closes off cheap disposal and pushes wet, biodegradable residues toward drying and recovery.
Source: https://www.umweltbundesamt.de/en/topics/waste-resources/waste-disposal/landfill · checked 2026-08
Organic fertilisers of agricultural origin — biogas digestate and poultry manure among them — are capped under the Düngeverordnung (DüV, Fertiliser Ordinance) at 170 kilograms of nitrogen per hectare per year, with prohibited application periods across the autumn and winter. Concentrating and stabilising the nutrients by drying lets a producer store material safely through the closed period and place it as a documented, transportable fertiliser rather than over-applying it on nearby land.
Source: https://www.gesetze-im-internet.de/d_v_2017/ · checked 2026-08
Compost and solid digestion products traded as quality fertilisers in Germany are certified under the RAL quality-assurance scheme operated by the Bundesgütegemeinschaft Kompost (BGK) — a nationwide, independently monitored regime that sets the pathogen, maturity and contaminant requirements a product must hold to carry the quality label. A dried, stabilised feedstock holds those quality bands far more easily than a wet, actively degrading one.
Source: https://www.umweltbundesamt.de/en/publikationen/quality-assurance-of-compost-digestate · checked 2026-08
Applicable standards: EN ISO 21640, EN ISO 17225-4, EN ISO 18134, RAL quality assurance for compost and digestate (BGK).
Economic context
Germany prices carbon on heating and transport fuels through its national emissions trading scheme (nEHS) under the Fuel Emissions Trading Act (BEHG): the fixed price rose from 25 euros per tonne of CO2 in 2021 to 55 euros in 2025, and from 2026 certificates are auctioned within a corridor of 55 to 65 euros, with coal covered since 2023 and waste fuels from 2024. This sits alongside the EU Emissions Trading System for heavy industry, so displacing coal or petcoke with a dried waste- or biomass-derived fuel avoids a real and rising per-tonne charge.
Source: https://www.dehst.de/EN/Topics/nEHS/understanding-nEHS/understanding-nehs_artikel.html · checked 2026-08
Bought-in power is a real cost: Eurostat put Germany's non-household (industrial) electricity price at 0.2264 euros per kWh in the second half of 2025, among the highest in the EU, which favours drying systems built around recovered kiln, boiler or flue heat rather than grid electricity.
Source: https://ec.europa.eu/eurostat/web/products-eurostat-news/w/ddn-20260508-2 · checked 2026-08
Industrial gas is likewise expensive: Eurostat put the German non-household natural gas price at 0.0713 euros per kWh in the second half of 2025, again among the highest in the EU, so running a dryer on a site's own combined-heat surplus rather than bought-in gas protects the operating margin.
Source: https://ec.europa.eu/eurostat/web/products-eurostat-news/w/ddn-20260508-3 · checked 2026-08
Electricity generated from solid biomass and biogas has been supported in Germany since 2000 under the Erneuerbare-Energien-Gesetz (EEG, Renewable Energy Sources Act) through feed-in and later market-premium remuneration, so a dried biomass or biogas fuel feeds into an established, incentivised renewable-energy market rather than a marginal one.
Source: https://www.umweltbundesamt.de/themen/klima-energie/erneuerbare-energien/erneuerbare-energien-gesetz · checked 2026-08
Worked illustration (assumptions stated):
A German digestion site earns from gas and heat first: biomass and biogas electricity has been remunerated under the EEG since 2000, so many plants are already cash-generative before the fibre is handled. Drying then turns a storage-and-spreading liability into a saleable soil product, absorbent bedding at circa 18% moisture, or a solid fuel. Running the dryer on the plant's own combined-heat surplus rather than buying grid power at 0.2264 euros per kWh, or gas at 0.0713 euros per kWh, keeps the operating cost low, and a dry, friable fibre carts economically to growers instead of being tankered wet. Where the fibre is sold as a certified soil improver, the BGK's RAL quality bands are easier to hold from a stabilised, dry feedstock. Assumptions: heat source, grade and offtake values vary site by site.
Figures are indicative and were last reviewed August 2026; energy and disposal prices move — contact us for a current assessment.
Digestate Dryer Manufacturer in Germany — FAQ
Do you have a German digestate drying installation?
Not yet. We will not imply a reference we do not hold; our documented FlowDrya lines dry digestate fibre, bark and woodchip in Britain, on the identical platform an operator here would receive.
How does the Fertiliser Ordinance affect digestate here?
The Düngeverordnung caps nitrogen from organic fertilisers at 170 kilograms per hectare a year and forbids spreading in autumn and winter. Drying concentrates the nutrients and gives a storable, transportable product, so a plant can place its digestate compliantly instead of over-applying on adjacent fields.
Can the dryer reach a fertiliser-pellet grade?
Yes. FlowDrya is configured to the target: below 20% for loose bulk fertiliser, around 18% for absorbent bedding, and 8–10% for a pellet or briquette feedstock. A lower, even moisture is what a pelletiser and a certified soil improver both need.
Does the stainless build suit corrosive digestate long term?
Yes. The stainless-steel enclosure resists the acidic, ammonia-laden vapour that shortens the life of mild-steel dryers, giving anaerobic-digestion operators a durable asset over decades of service.
What end markets take the dried fibre?
Depending on grade, arable growers wanting a phosphate-rich amendment, livestock yards seeking absorbent bedding, and pellet mills producing a compact renewable fuel. Dry, friable fibre blends predictably and freights well.