Technology for N recovery as urine from pig manure with "VeDoWS" adapted stable construction system (ID:323)

Input material
raw pig manure
Output product
urine
Processing capacity
dependent of the scale (numbers of pigs)
Technology Status
Available on the market
Keywords
VeDoWS
adapted stable construction
primary separation
Technology description

Underneath the slatted floor of the VeDoWS stable system a shallow cellar is constructed which enables the primary separation of urine and solid manure. The cellar consists of two inclining parts with in its middle an opening of 18 to 22 mm. Using a scraper, the solid manure is removed from the manure gutter daily. This primary separation of manure in the cellar is the basis of lower ammonia emissions. There is no need for chemicals by using this technique.

By adaption of a stable system, pig manure is being primary separated in solid manure and urine in the stable. The main advantage of this separation technique is that there are less ammonia, GHG emissions and odour in the stable. The hydrolysis of urea to carbon dioxide (CO2) and ammonia (NH3) is catalysed because of urease, an enzyme which is found in solid manure. Therefore when solid manure and urine are collected separately there is less NH3 emission because urine is less in contact with urease.

Another advantage is that this technique implies a better biogas potential for the solid manure, because it is removed on a daily basis and therefor remains fresh. Moreover, the urine is better suitable as a fertilizer because it contains most of the nitrogen and potassium and is not phosphorus limited.

Linked product: Urine from pig manure by "VeDoWS" adapted stable construction system, ID:322

Basic information

Vendor:
Country:
Belgium
Technology main category:
Physic-chemical nitrogen recovery from manure, digestate and wastewaters: separation, stripping and membrane processes
Technology subcategory:
Physical separation

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