Technology Catalog - Vendor Detail

ASM - Drying System
ecoDRYER' Digestate Dryer

Company Description:

ASM is a UK incorporated environmental Biotech company, located in London. Founded in 2003, ASM’s business focus is the marketing and sales of its patented Accelerated Thermophilic Aerobic Digestion technology (ATAD), which converts organic waste materials into commercially viable commodities such as granular fertiliser, animal feed and pure energy.
ASM Main Image

Technology Description:

Most sludge dryers come with a very high capital cost or they consume large amounts of power. Both causing the final solution not to be economically viable for the investor. The AMS solution is developed to use as little power as possible and designed to give you a return on investment in around three years. Thereafter you will be generating a profitable income. AMS uses a dewaterer, a rotary dryer and recycled heat. AMS sets up an affordable solution based on your resources and requirements. The end product will be a granulated 85% dry solid, usable as slow release fertiliser.



Technology Type

  • Active Solids Drying


  • Equipment Vendor


  • Concentrated Nutrients


  • Nitrogen
  • Storage
  • Odor
  • Pathogens
  • GHG

Technology Strengths,Weaknesses and Critical Indicators

Active Drying Technologies:

  • Produce a marketable product, dry manure solids, and reduce transportation costs
  • Require energy to reduce water content and dry manure solids, purchased energy cost are an issue
  • Require operator attention in excess of other systems due to the risk of combustion
  • Other compounds are released with the water (i.e. ammonia, hydrogen sulfide), and require additional treatment
  • Potential loss of ammonia nitrogen due to volatilization
  • Proven technology for storage reduction, odor control, GHG reduction and pathogen reduction

Newtrient Comments/Opinions:

Evaporation and Drying Technologies:

  • Uses heat to produce either manure with less water or dried manure solids
  • Systems that reduce water in manure use a series of evaporators to sequentially evaporate water from liquid slurries—energy is supplied either by purchased fuel and/or waste heat from other processes
  • Systems that dry separated solids use either a belt or drum to evaporate water from separated solids—energy is supplied either by purchased fuel, electricity and/or waste heat from other processes
  • Chemicals are released with the water (i.e. ammonia, hydrogen sulfide), and this often requires additional treatment such as condensation of the water and/or scrubbing of the chemicals
  • The requirement for purchased energy and costs are a significant concern leading to a tradeoff between input costs and gains in liquid concentration and transportation/market of by-products


ASM has not been evaluated using Newtrient's 9-point scoring process because they are not seeking dairy based projects.
Comments added 12/28/2016

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