Technology for N&P recovery as enriched compost from digestate of pig manure with the "Mix-Fertilizer" biological and stripping process (ID:257)

Input material
pig manure
Output product
enriched compost
Processing capacity
1 t/d
Technology Status
Prior to market introduction
Keywords
Two-phase anaerobic digestion
Pyrolysis
Struvite crystallization
Technology description

MIX-FERTILIZER presents an innovative system for the agronomic valorisation of waste from the anaerobic digestion (decomposition without oxygen consumption) of pig manure and to improve the associated environmental impacts.
This involved the construction of prototypes to recover inorganic nitrogen from the liquid phase by stripping (physical separation of components from a liquid stream), the formulation of new organic fertilisers containing an inhibitor to ensure the gradual release of nitrogen, and the application of the fertilisers and liquid fraction in field trials. The final aim is to obtain a new type of fertiliser with a mixed organic/mineral base, and with a gradual nutrient release due to the addition of the nitrification inhibitor 3-4 dimethylpyrazole phosphate (DPPP), along with an aqueous effluent fraction for use in fertigation. Specific objectives included the management of the demonstration plant and optimal integration of the individual steps for treating 120 m of digestate per day; recovery of the inorganic nitrogen from the  liquid  phase  for  further  use  in  new   fertilisers  to  replace  the  synthetic  mineral  content;  validation  of  the advantages of the new fertilisers in field trials; use of the water obtained as a by-product for the fertigation of sunflower; and a reduction of the carbon footprint associated with agricultural activities. The new fertilisers were
produced by composting the solid fraction of the pig manure in a specific mixture with poultry manure and straw. Three field trial plots (1 ha total) were sown with short-cycle barley. 

Linked ProductPelletized digestate from mixture of pig manure, poultry manure and straw by "MIX-FERTILIZER" process, ID:267

Basic information

Vendor:
Country:
Spain
Technology main category:
Biological nutrient recovery: composting, anaerobic digestion, microalgae technology
Technology subcategory:
Anaerobic digestion

Languages

Summary:

Technologie zur N & P-Rückgewinnung als angereicherter Kompost aus Güllevergärung mit dem biologischen und Strippingverfahren “Mix-Fertilizer“

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Technologie de récupération d’azote et de phosphatesous la forme de compost enrichi à partir de digestat de fumier de porc avec un processus de décapage biologique« Mix-engrais » 

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Tecnología para la recuperación de N y P como compost enriquecido procedente de la digestión de purines mediante el proceso biológico y de stripping “Mix-Fertilizer” 

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Tecnologia per il recupero di N&P come compost arricchito a partire da digestato di letame suino mediante il processo biologico e di strippaggio "Mix-Fertilizer" 

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Technologie voor N&P-terugwinning uit digestaat van varkensmest door productie van verrijkte compost met"Mix-Fertilizer" biologische en stripping processen

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Technologia odzyskiwania N&P jako wzbogaconego kompostu z przefermentowanego obornika świńskiego w procesie biologicznym i oczyszczania „Mix-Fertilizer” 

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Summary:

Fermentált sertéstrágyával dúsított N&P komposzt technológia „Mix-Fertilizer” biológiai és sztrippelési eljárással

 

 

 

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