The installation looks like this from above

The concept contains a technical basin, five basins. Before the slurry is introduced, it must be separated into a thick fraction and a thin fraction. This is done with the help of a manure separator. The biological catalyst is then added to the technical basin, after which the slurry flows through the installation. The operation of the installation in combination with the catalytic converter is a proven and patented system by Dutch Farmer Solutions.

The processing process consists of these steps:

  • Homogenize
  • Aerate
  • Denitrify
  • Aerate again
  • Decant.

From the installation, the water may be discharged into surface water in accordance with Dutch and European regulations.

Why does the manure installation work?

In Spain, the test facility was built at a pig farm north of the city of Zaragoza in the province of Aragon. This part of the country has a Mediterranean climate that is strongly influenced by the temperate continental climate of Castile. As a result, the average temperatures are slightly lower than near the Spanish coast. The chance of frost or night frost is also greater in Aragon.

CO2 reduction
The reduction of CO2 emissions was measured by the European measuring institute European Quality Assurance (EQA).

  • Emissions without installation: 325 t-CO2
  • Emissions from installation: 12 t-CO2
  • Emission reduction: 314 t-CO2 97 percent CO2 reduction

These results have been validated by EQA, an authorized agency supervised by the Spanish government department, Ministerio para la Transicion Ecologica.

Nitrogen reduction
To determine the nitrogen reduction in the manure, the Eurofins company was called in, which has established the median data for the manure composition. This amounts to seven kilos of nitrogen per ton of manure. The analyzes of samples from the last basin carried out by Eurofins show that there is only 0.46 kilos per ton of manure. This is a 93 percent decrease in nitrogen from the raw slurry, a significant difference.

Ammonia reduction
The reduction in ammonia (NH3) emissions is more than 90 percent, according to the text phase in Spain. This is due to the direct separation of the slurry, so that chemical compounds that lead to the formation of ammonia never take place. Normally, the share of ammonia in total nitrogen emissions is high. Due to, among other things, the lack of ammonia, the total nitrogen emissions are drastically reduced. The final composition of the residual product (water) makes it discharged or useful for stable cleaning or irrigation on land.

The solid that remains after the separation of the slurry is processed into (fertilizer) fertilizer for agriculture, horticulture and arable farming. In this way, the entire process is closed without negative residual products.

Eurofins has shown that the content of Kali and phosphorus in the residual product has also decreased. The potassium concentrations in the residual product and phosphorus are so low that the water can be used for the irrigation of the land or for the cleaning of the stable.