The Twente entrepreneurs Pieter Jansen, Richard Pijnappel and Gerrold Emaus developed the Abrimix mobile manure processing installation that should make it possible to inject, irrigate or mix 'feed water' with slurry.
The Abrimix principle is an existing system that is used for various purposes in water purification technology. Pijnappel and Emaus came up with the idea to apply this technique in the processing of animal manure on a farm scale, with the aim of reducing nitrogen and phosphate at an affordable price.
Dischargeable water expensive
The last step that large-scale manure processing installations often apply is to process the thin fraction into dischargeable water. That last step makes manure processing expensive. According to Emaus and Pijnappels, it is a better method and a less expensive solution to use the yellowish liquid that remains after the slurry centrifuge as feed water instead of further purifying it into dischargeable water.
Emaus has been active in the trade and transport of manure for many years. With the Abrimix system, he is convinced that they can compete with large-scale manure processing. After 3 years of testing and development, the system is now ready to go. It is of course also a great advantage that large volumes of slurry do not have to be driven over great distances.
Yellowish feed water
The processing procedure is based on the separation of slurry with a conventional screw press/centrifuge into a thin and a thick fraction, in the ratio 85% / 15%. The solid matter in the thin fraction can be kept to a minimum by additional filtering. The liquid that then remains contains no more phosphate and still has a nitrogen and potassium content between 0,3 and 1,5 kilograms per ton, depending on the type of fertilizer.
Fertilization plan
Pijnappel and Emaus are of the opinion that this yellowish feed water poses little or no environmental impact and that livestock farmers can add this feed water to their manure, instead of diluting slurry with water from a well or surface water, as is already the case in many cases.
Gerrold Emas
By adjusting the dosage of the nutrient water, you can fertilize extra in the spring when the crop requirement is greater, and in the summer you can focus more on combating ammonia reduction and combating drought. By working in this way with an Abrimix installation, slurry no longer needs to be fertilized and a problem with a possible slurry ban in the future is solved before it could become a problem.
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