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NEW TRENDS

North Yorkshire, UK: a new generation anaerobic digestion plant

100% waste generates biomethane for the gas grid

The realized anaerobic digestion plant in North Yorkshire has been designed to take 60,000 tons of
blended food and green waste per annum. It is a gas to grid plant, enabling methane to be injected
directly into the gas network for maximum carbon effi ciency. If the plant were CHP, however, it would
be equivalent to a 3 MW facility.
Developing this project means that BTS understand the challenges facing anaerobic digester operators
concerning feedstock availability, plant operation and optimization of the process, as
just a few examples.
In the upgrading system, BTS uses more membranes, the company developed an effi cient temperatu-
re control for the plant and they build a bigger heat exchanger.

Year of plant construction: 2016
Year of performed service: 2016

Plant size: 500 kWel - 7,538,000 Sm3/y biogas

Process temperature: Mesophilic
Type of raw material: 100% organic waste and industrial food processing leftovers

Utilization of biogas:
• Production of Electricity
• Upgrading for Gas to Grid Injection

Heat utilization: Fermenters heating, Upgrading unit, pasteurization
Utilization of digestate: Production of 50,000 t/y of pasteurized liquid.

Figure 5 - Outputs Opportunities of an AD Plant

96 96 Impiantistica Italiana - Maggio-Giugno 2021