Egg poultry farms produce waste. Poultry dung is a substrate for biogas plants.
Egg poultry farms generate waste in the form of poultry dung, which serves as an excellent substrate for biogas production. This organic material can be processed in biogas plants to produce renewable energy.
One key characteristic of poultry dung is its high protein content. During the decomposition of proteins in biogas plants, ammonium is released, which can inhibit the methane production process. While ammonium is essential for building bacterial cells, its concentration becomes problematic when the carbon-to-nitrogen ratio falls below 30:1, leading to inhibition of methane formation.
Poultry dung contains both ammonium and hydrogen sulfide. In the biogas production process, biogas passes through a water scrubber column, which not only removes sulfur compounds but also enriches the water with acid.
A small amount of FeCl3 is used as a reagent to aid in the scrubbing process. The resulting effluent, with a pH of 3, is then returned to the anaerobic reactor. This acidic effluent helps mitigate ammonia levels within the reactor, improving the overall process.
This method is both cost-effective and efficient, as the water scrubber serves as a two-in-one solution for sulfur removal and ammonia control.
The addition of carbon-rich organic materials, such as maize silage, fat pulp, or cow manure, helps balance the carbon-to-nitrogen ratio in the anaerobic digester. By increasing the carbon content, this adjustment prevents the inhibition of the methane production process, maintaining optimal conditions for biogas formation.
An ANA-strip reactor is an additional module that can be integrated into a conventional biogas plant for wastewater treatment. This module cleans the effluent and allows for water recycling. While adding such a module increases the cost of the biogas plant by approximately 50%, it offers significant additional benefits, including the production of ammonium sulfate, a valuable mineral fertilizer.
The ANA-strip reactor is a standardized product, widely produced and readily available.
The capacity of the biogas plant is directly proportional to the number of birds and the volume of manure produced. For example, at the Kurma poultry farm in Kazakhstan, which houses 1 million laying hens, a biogas plant with a capacity of 1 MW was built to match the scale of manure production.
Biome Biogas is committed to promoting sustainable energy and infrastructure solutions, helping clients harness the power of biogas while contributing to environmental conservation.
From planning to execution, they deliver quality infrastructure solutions that adhere to the highest standards.
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