

Biogas / Anaerobic Treatment Systems
Solutions for Environmental Treatment of Wastewater and Organic Sludge
What Is Anaerobic Treatment?
Anaerobic systems are biological processes in which microorganisms break down organic matter in the absence of oxygen, in both liquid and solid phases.
They are widely used in:
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Wastewater treatment with high organic loads
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Organic sludge digestion
Both processes generate biogas or methane.
Stages of the Anaerobic Process
1. Hydrolysis
Complex organic macromolecules are broken down into simpler compounds.
2. Acidogenesis
The compounds generated during hydrolysis are converted by acidogenic bacteria into volatile fatty acids, alcohols, and intermediate compounds.
3. Acetogenesis
Volatile fatty acids and other intermediate compounds are mainly converted into acetic acid, hydrogen and CO₂.
4. Methanogenesis
Methanogenic bacteria convert acetic acid, hydrogen and CO₂ into methane (CH₄) and carbon dioxide.
System Benefits
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Significant COD reduction
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Generation of energetically usable biogas
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Lower sludge production compared to aerobic systems
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Reduction of operating costs
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High efficiency in concentrated industrial effluents
Experience and Technical Capacity
Aplicaciones Especiales del Vallés S.L. has extensive experience in the design, commissioning and maintenance of anaerobic systems, as well as strategic agreements for the supply of anaerobic granular biomass (AGB).
We have our own storage capacity of approximately 600 m³.