Colsen – AMFER Ammonia Stripping

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Colsen – AMFER Ammonia Stripping

water, energy & environment

Company Description:

Colsen headquarter are located in the Netherlands. Colsen’s customer base is in the food-processing industry and in the communal & industrial waste water area.

 

Colsen is specialized in the execution of projects in the area of water treatment and energy production via (anaerobic) digestion. The Colsen activities range from problem solving, design and engineering, project management, construction supervision, commissioning as well as operation & maintenance support. Colsen has a very flexible organization and used to provide tailor made solutions for Colsen’s clients in a multidisciplinary setting. Colsen’s world-wide business scope covers technology developments, installations delivery and products & services in the fields of water treatment, sustainable energy and environmental protection.

Technology Description:

Nitrogen removal from ammonia containing water / sludge / digestate and the production of (artificial) fertilize.

During the fermentation of manure and other organic substrates the organic nitrogen present is largely transformed into ammonia (NH4) nitrogen. The high nitrogen content constitutes a limiting factor for field application of the digestate (as a result of European nitrate directive). Current digestate treatment is making use of biological pathways to convert NH4–N into nitrogen gas. These techniques require considerable amounts of energy and result in the loss of nitrogen as nutrient. The AMFER® technology can be applied to produce ammonium-sulfate, which can be used as an (artificial) fertilizer.

Via a batch or continuous operation the ammonia is liberated, removed and fixated. For this purpose the digestate is simultaneously heated and aerated. The process is executed at a temperature of around 60°C and there is no need for additional chemicals. The thermal energy required can be obtained form the existing CHP installation.


Technology Type

  • Ammonia Stripping

Vendor

  • Equipment Vendor

Product

  • Concentrated Nutrients

Problem

  • Nitrogen
  • Odor
  • Pathogens

To view additional information about this vendor, click below.

Technology Strengths, Weaknesses and Critical Indicators

Ammonia-N can be harvested from manure and digestate using proven chemical/thermal processes:

  • Produces a concentrated source of nitrogen from a renewable source
  • Requires pre-treatment to remove coarse and fine solids
  • Pairs well with anaerobic digesters because digesters convert organic N into ammonium
  • Chemical storage required for process chemicals and final product
  •  Proven technology for nitrogen recovery, odor control, and pathogen reduction

Newtrient Comments/Opinions:

Ammonia-N can be harvested from manure using proven chemical/thermal processes.

  • Produces a concentrated source of nitrogen from a renewable source
  • Requires pre-treatment to remove coarse and fine solids
  • Pairs well with anaerobic digesters because digesters make more ammonia available
  • Chemical storage required for process chemicals and final product
  Colsen is an international company with extensive experience in the treatment of dairy and other animal agricultural wastes in Europe. Colsen is actively looking for partners in the USA and Canada to do wastewater and manure treatment projects with their technologies.   Colsen has not been evaluated using Newtrient's 9-point scoring process because, although their process appears to be suited for use on dairy manure, Newtrient is not aware of any current dairy based projects in North America. Newtrient will work with Colsen to refine the cost and performance information as more information comes in with commercial dairy installations in North America.

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