Dorset – Drying System

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Dorset – Drying System

Green Machines

About the Company:

Dorset Group is a globally active production company. They develop and produce solutions for processing organic waste streams, air cleaning, electronic identification and animal housing.

About the Solution:

Dorset Green Machines has been a leading innovative manufacturer of conveyor belt drying system since 1997. Conveyor belt drying systems are most suited for drying residual or waste products, with the objective of converting these into valuable products.

Dorset Weverij 26 Aalten, The Netherlands USA 31-543-472103 Visit Company Website

Solution Type

  • Active Solids Drying

Vendor

  • Equipment Vendor

Product

  • Concentrated Nutrients

Problem

  • GHG
  • Nitrogen
  • Odor
  • Pathogens
  • Storage

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Solution 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
Dorset has been unresponsive to Newtrient's multiple attempts to supplement or validate the information about this technology.

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