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Project's context & challenges

Rzeczyca Sp. z o.o. is a local company that processes agricultural waste and produces biogas. It owns and operates the Rzeczyca biogas plant, transforming organic materials into clean, renewable energy.

The plant uses heat from its combined heat and power (CHP) units for internal needs. It then uses the remaining energy to dry the solid fraction of the digestate, improving efficiency and sustainability.

Local farmers supply feedstocks such as grass, vegetable waste, distillery vinasse, and industrial by-products. The project focuses on sustainably managing these materials while generating green energy for the local power grid.

Nijhuis served as the general contractor, delivering the full technology package along with civil and electrical works, CHP units, and a direct connection to the grid.

Key figures

Biogas production approx. 10.500 m3/day
Capacity

Customer benefits

Customer benefits

Energy connection to the grid

Smart incorporated controls to manage the system

Valuable fertilizers (solid / liquid)

Automated and complete turnkey biogas installation

Solution

The Rzeczyca biogas plant is one of the largest and most advanced facilities built by Nijhuis in Central Europe. It turns agricultural waste—such as grass, vegetable scraps, corn silage, and distillery vinasse—into clean, renewable energy.

At the heart of the plant is the AECOMIX™-TAURUS digester, which receives dry materials via a modular solid feeder with a walking floor system. Liquid industrial and agricultural waste is pumped directly into the process.

The plant uses two large digesters (22 meters in diameter and 8 meters high) to break down the organic material through anaerobic digestion. This process produces biogas, which powers two 0.5 MW combined heat and power (CHP) units, delivering a total of 1 MW of electricity.

After digestion, the remaining material (digestate) is separated into liquid and solid fractions. The liquid is stored in a lagoon and later used as fertilizer on nearby fields. The solid part is dried using heat from the CHP units' exhaust gases, thanks to an innovative drying system.

The Rzeczyca plant showcases a smart and sustainable solution for turning waste into energy—supporting agriculture and reducing environmental impact.

Scope of supply

  • Turnkey contract
  • Design
  • Project management and engineering
  • Manufacturing, delivery, installation
  • Commissioning
  • Civil and electrical works

Applied solutions

  • Solid feeder
  • Main digester and post digester
  • Screw press
  • Dryer
  • 2x 0,5 MW CHP units

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