Industrial Drying Plant Manufacturer in the United States
Explore the technologyLooking for drying plants manufacturers in the United States? STRONGA builds FlowDrya lines to order at its Hertfordshire works and supplies them to the United States — see the regulatory and economic context below.
FlowDrya is a British-built industrial drying platform, engineered and assembled to order at STRONGA's Hertfordshire works, and we supply it across America. Unlike a single-feedstock machine, the continuous-flow dryer is configured per project – bark, digestate fibre, woodchip, RDF, SRF, poultry litter or mixed waste – around one hydraulic moving-floor bed with PulseWave agitation. We are straightforward that we hold no documented US installation yet; our credibility rests on delivered British work, where the same core plant dries bark, digestate fibre and woodchips at reference sites in England and Wales. Every unit is fully assembled and factory-tested before it leaves the works and is commissioned on the customer's site.
Supplying the United States
We supply the United States from our Hertfordshire works — we have no documented FlowDrya installation in the United States yet.
Regulatory context
Non-hazardous solid waste is regulated under Subtitle D of the federal Resource Conservation and Recovery Act (RCRA): open dumping is banned and municipal solid waste landfills must meet the minimum national criteria of 40 CFR Part 258, but the individual states run the permitting programs and may set stricter rules, so the requirements a drying or waste-processing plant faces vary from state to state.
Source: https://www.ecfr.gov/current/title-40/chapter-I/subchapter-I/part-258 · checked 2026-08
Whether a waste-derived fuel such as RDF or SRF counts as a legitimate fuel or as a discarded 'solid waste' when burned in a cement kiln or waste-to-energy unit is decided by EPA's 2011 Non-Hazardous Secondary Material rule, and that classification sets which Clean Air Act (MACT) emission standards the combustion unit must meet; a consistent, low-moisture, well-specified fuel is central both to qualifying and to stable combustion.
Source: https://www.epa.gov/smm/energy-recovery-combustion-municipal-solid-waste-msw · checked 2026-08
Biosolids and other sewage-sludge-derived materials applied to farmland are governed by the federal Standards for the Use or Disposal of Sewage Sludge at 40 CFR Part 503, which set Class A and Class B pathogen-reduction pathways; a Class A product achieved through heat and drying carries the fewest land-application restrictions.
Source: https://www.epa.gov/biosolids/land-application-biosolids · checked 2026-08
There is no single federal compost standard; instead, marketable compost quality is demonstrated through the US Composting Council's Seal of Testing Assurance (STA) Certified Compost program, which uses the TMECC test methods and is referenced by a growing number of state and municipal purchasing specifications.
Source: https://www.compostingcouncil.org/page/STARequirements · checked 2026-08
Renewable natural gas produced from anaerobic-digester biogas can earn tradable RIN credits under EPA's Renewable Fuel Standard (D3 cellulosic or D5 advanced, depending on feedstock), which strengthens the economics of digestion sites that must also separate and dry the resulting digestate fibre.
Source: https://www.epa.gov/agstar/renewable-natural-gas-agricultural-based-adbiogas-systems · checked 2026-08
Applicable standards: EN ISO 21640, EN ISO 17225-4, EN ISO 18134, US Composting Council STA (TMECC), 40 CFR Part 503.
Economic context
US landfill tipping fees have climbed year on year — the latest national survey by the Environmental Research & Education Foundation (EREF) put the average at $62.28 per ton, roughly 10% up on the prior year, and large or private landfills charge appreciably more — so avoiding disposal is a growing cost saving.
Source: https://www.recyclingmonster.com/article/eref-us-landfill-tipping-fees-soared-10-in-2024/4251 · checked 2026-08
US industrial customers paid an average of roughly 8.29 cents per kWh for electricity in 2025 (EIA Electric Power Monthly, Table 5.6.A) — cheaper than in Europe but still well above the cost of recovered process heat, so a dryer that runs on waste heat and draws little grid power protects the operating margin.
Source: https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_5_6_a · checked 2026-08
US industrial natural gas is inexpensive by world standards — recent EIA data put it at $4.07 per thousand cubic feet — which favours drying systems designed around gas-fired or biomass-fired heat, or recovered kiln and boiler exhaust, rather than electric heating.
Source: https://www.eia.gov/dnav/ng/hist/n3035us3a.htm · checked 2026-08
The USDA Rural Energy for America Program (REAP) offers agricultural producers and rural small businesses grants covering up to 50% of eligible project cost — up to $1 million for a renewable-energy system — which can offset the capital cost of an on-farm dryer or an associated biogas or heat system.
Source: https://www.rd.usda.gov/programs-services/energy-programs/rural-energy-america-program-renewable-energy-systems-energy-efficiency-improvement-guaranteed-loans · checked 2026-08
Worked illustration (assumptions stated):
The general economic case for an industrial dryer in America is that heat is cheaper than electricity and disposal is dearest of all. With a national landfill tipping fee averaging $62.28 per ton, removing water to shrink weight, avoid disposal and unlock an offtake almost always beats shipping wet material away. Because industry pays about 8.29 cents per kWh for electricity but only $4.07 per thousand cubic feet for gas, FlowDrya's design – recovered waste heat plus a stop-start floor that sips electrical power – targets the two costs that dominate the business case. Rural and agricultural sites may also draw a USDA REAP grant worth up to 50% of the project. Assumptions: payback depends on feedstock, heat source and product value; these are national reference prices.
Figures are indicative and were last reviewed August 2026; energy and disposal prices move — contact us for a current assessment.
Industrial Drying Plant Manufacturer in the United States — FAQ
Are FlowDrya drying plants made in America?
No – every FlowDrya is engineered and assembled at STRONGA's Hertfordshire factory in England, then shipped, installed and commissioned on the customer's site across America.
What feedstocks can one FlowDrya plant dry?
A single configurable platform handles bark, woodchip, digestate fibre, RDF, SRF, poultry litter and mixed waste; the bed, heat interface and controls are specified to the material and throughput of each project.
Do you have US installations yet?
Not yet, and we will not imply one. Our documented reference sites – bark, digestate fibre and woodchip – are in England and Wales, all running the same FlowDrya moving-floor technology.
What throughput can a FlowDrya achieve?
Capacity is matched to each application by sizing the bed area, airflow and heat input; a modular layout lets an operator scale up later or relocate the plant as production grows.
How is the drying air supplied?
FlowDrya accepts heat from many sources – boiler flue gas, biomass furnaces, combined-heat-and-power jackets or waste-process exhaust – transforming it into clean, controlled drying air through the machine's heat interface.
How durable is the platform?
With few moving parts and a hydraulically driven floor, it is engineered for a long service life and low maintenance, protecting the operator's capital over many years of continuous duty.