METHOD FOR INTEGRAL MANAGEMENT OF DUNG OF DAIRY CATTLE, INVOLVES CARRYING OUT HYDROLYSIS AND ACIDOGENESIS, AFTER PHYSICAL SEPARATION OF CHEMICAL RESIDUES IN SOLID PHASE AND LIQUID PHASE ; METHOD FOR INTEGRAL MANAGEMENT OF DUNG OF DAIRY CATTLE, INVOLVES CARRYING OUT HYDROLYSIS AND ACIDOGENESIS, AFTER PHYSICAL SEPARATION OF CHEMICAL RESIDUES IN SOLID PHASE AND LIQUID PHASE

Patent number:

ES2292277

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The method involves carrying out hydrolysis and acidogenesis, after physical separation of the chemical residues in two phases, solid and liquid. Stabilization and recovery of biogas energy through anaerobic digestion is carried out for the solid phase. Stabilization and obtaining of biogas in an anaerobic reactor of high load is carried out for liquid phase. Ammoniacal nitrogen is recovered from the liquid effluent as solid magnesium ammonium phosphate, which results in liquid with low ammoniacal content.

Countries:
Spain
Regions:
Cantabria
Centers:
UNIVERSIDAD DE CANTABRIA
Other entities:
Sectors:
Other
Subsectors:
Other special machines, Environmental technology, Y02E50/30
TRL Level:
TRL 3 – experimental proof of concept
BRL Level:
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Video Link:
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Sustainable Development Goal:
Applications

Procedimiento para la gestión integral del estiercol de ganado vacuno lechero que consta de una primera etapa de hidrólisis y acidogénesis, posterior separación físico química del residuo en dos fases, sólida y líquida. Para la fase sólida estabilización y recuperación energética de biogás mediante digestión anaerobia. Para la fase líquida estabilización y obtención de biogás en un reactor anaerobio de alta carga. Recuperación del nitrógeno amoniacal del efluente líquido como fosfato amónico magnésico sólido. El líquido resultante con bajo contenido amoniacal puede aplicarse al terreno, necesitando ahora mucha menor superficie para cumplir la normativa vigente. Este líquido también podría tratarse conjuntamente con agua residual urbana en las plantas biológicas aerobias de tratamiento, o bien mediante tecnología de membranas para obtener un efluente final que podría ser vertido a cauce público cumpliendo la normativa.

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