INTEGRATED SYSTEM – ANAEROBIC DIGESTION & COMPOSTING

Enermat

Semi-dry plug-flow technology turning the organic fraction of waste into biomethane and biofertilisers.

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30,000 t/year

Modular lines up to

>30%

Total solids, semi-dry

Bulking agent added

The technology

How it works.

The system consists of dedicated pretreatment lines to optimise recovery of the solid fraction from both source-separated and mixed waste. The organic fraction is then fed through feed tanks to the anaerobic digesters, fitted with a low-speed mixing system. A continuous control system keeps the process temperature within 42-45ºC to optimise biogas production. Digestate is sent via an automatic pumping system to the Biomax-G/Biomatic composting line to complete biological treatment, sanitise the material and, through a refining line, produce a biofertiliser. Biogas is converted into biomethane on the upgrading line and can be fed directly into the grid or used in cogeneration engines.

Process

The process phases.

Solid fraction pretreatment

The system includes dedicated pretreatment lines to optimise recovery of the solid fraction from both source-separated and mixed waste.

Low-speed anaerobic digestion

The organic fraction is then fed through feed tanks to the anaerobic digesters, fitted with a low-speed mixing system.

Temperature control

A continuous control system keeps the process temperature within 42-45ºC to optimise biogas production.

Digestate composting

Digestate is sent via an automatic pumping system to the Biomax-G/Biomatic composting line to complete biological treatment, sanitise the material and, through a refining line, produce a biofertiliser.

Upgrading and grid injection

Biogas is converted into biomethane on the upgrading line and can be fed directly into the grid or used in cogeneration engines.

Video

Technical advantages

Why choose Enermat.

Proprietary pretreatment

Proprietary pretreatment system: maximum recovery of the solid fraction of OFMSW with no need for a bulking agent.

Pretreatment-focused design

Design suited to pretreating residual organic waste, with high separation capacity for improper material in a single pass and recovery of the residual organic fraction.

Feed tank

Stirred feed tank ahead of the inlet, for pumping into the digester.

Controlled anaerobic digester

Anaerobic digester with a low-speed mixing system and temperature control (42-45°) to optimise biogas production.

Residence time

Residence time in the digester: 21-25 days.

Automatic discharge

Discharge by automatic pumping to the mixing and composting system.

Digestate sanitisation

Digestate sanitisation with continuous temperature monitoring.

Zero leachate

No leachate produced, with no need for a treatment system.

Scalable system

Scalable system, with processing capacity starting from 20,000 t/year.

Technical specifications

Treatment capacity

200-600 tonnes/day of slurry

Technology

Semi-dry plug-flow

Dry matter content