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Renewable gas · Engineering & project delivery

Compressed Biogas (CBG) Plants

Integrated plant solutions for converting suitable organic feedstocks into upgraded, compressed biogas. ATTOMO brings engineering, equipment supply and project execution together around the feedstock, gas specification and site requirements.

Explore the plant scope ↓

From feedstock to usable gas

  1. 01 · PrepareFeedstock receiving, segregation, preparation and slurry feeding.
  2. 02 · DigestAnaerobic digestion, biogas collection and buffer storage.
  3. 03 · UpgradeHydrogen sulphide removal, carbon dioxide separation and gas drying.
  4. 04 · CompressCompression and the specified storage, cascade or dispensing interface.

Simplified process overview. Digestate processing, utilities, flare and safety systems form part of the defined plant interfaces.

A coordinated plant scope

Feedstock & digestion

Receiving and handling, feed preparation, slurry preparation, feeding, anaerobic digestion and biogas collection/storage.

Gas treatment & delivery

Desulphurisation, upgrading, drying, compression and specified high-pressure storage, cascade or dispensing systems.

Digestate & plant integration

Digestate handling and manure-processing interfaces, flare and safety systems, piping, electrical systems, instrumentation and PLC/SCADA automation.

Execution & verification

Installation, commissioning and performance testing within the agreed package. Civil works, utilities, approvals, offsites and customer responsibilities are defined before execution.

Design begins with the feedstock

Cattle dung, press mud, food waste, selected agricultural residues and segregated organic municipal waste may be considered. Feedstocks are assessed individually or as an agreed blend; they are not interchangeable.

Quantity, seasonal availability, moisture, organic content, contamination and biodegradability determine the preparation and digestion basis. Agricultural residues may need additional pretreatment. Gas output and plant performance require a characterised feed and project-specific engineering.

Information for your enquiry

  • Feedstock types, daily quantity, seasonal availability and available test reports.
  • Desired CBG output and product specification or proposed offtake route.
  • Site location, plot details, water, power and other available utilities.
  • Digestate use or disposal route and environmental interfaces.
  • Required engineering, equipment, installation and commissioning scope.

Share the information available; the engineering discussion can establish the remaining inputs.

CBG project questions

Can one plant use several feedstocks?

A blend can be assessed, but digestion stability, pretreatment and expected gas output depend on its composition and variability. The design basis must specify the accepted feedstocks and operating range.

How is CBG output determined?

Output depends on feed quantity and characteristics, digestion performance and gas-upgrading losses. A capacity or yield commitment follows feed assessment, process selection and an agreed performance-test basis.

What happens to the digestate?

The project defines digestate handling, separation and any further processing. Suitability for a particular use, product quality and applicable requirements need separate review; saleable manure is not assumed from digestion alone.

Is commissioning included?

Installation, automation, commissioning and performance testing can be included in the agreed scope. Utilities, approvals, civil works, storage and offtake responsibilities are allocated in the proposal.

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