Muge Swine Farm
Manure Management
Swine manure and urine are collected, homogenized, and separated into solids for aerobic composting into organic fertilizer for sale, and liquids for anaerobic digestion into biogas, which is used to generate heat.
Project Type
Vintage Period
Tradeable Quantity
Methodology
Waste handling and disposal
2021 - 2023
58, 604 tCO2e
ACM0010
GHG emission reductions from manure management systems
Project ID
Emission Reductions
Crediting Period
VCS 3905
42, 640 tCO2e/yr
2021 - 2028
BACKGROUND
Gansu Hui County Muge Swine Farm Manure Management System GHG Mitigation Project, situated at a pig farm in Longnan City, Gansu Province, aims to reduce methane emissions by introducing a new Animal Waste Management System (AWMS) that treats manure. The project involves collecting manure and urine through leaky boards into tanks, where it undergoes homogenization using submersible pumps. The solid waste is then processed into organic fertilizer via aerobic composting, while the liquid waste is treated through anaerobic digestion, resulting in biogas used for heat generation within the farm's operations. It is predicted that this system will handle 29,674.5 tons of animal manure annually and result in 42,640 tCO2e emission reductions per yea.
SOLUTION
Emission Reduction Process :
- Homogenized Hydrolysis Pretreatment: The manure is thoroughly mixed and broken down into simplermolecules, making it easier for microorganisms to digest.
- CSTR Anaerobic Fermentation: The prepared manure is processed in a continuously stirred reactor, where bacteria break down the organic matter in the absence of oxygen, producing biogas.
- Independent Gas Storage Membrane: The biogas produced in the process is stored in a flexible expandable membrane, preventing its escape into the environment.
- Biogas Utilization: The stored biogas can be used in various ways, such as for heating, electricity generation, or as a vehicle fuel.
- Utilization of Organic Fertilizer: The remaining solid and liquid residues, now safer and rich in nutrients, can be used as a fertilizer, making the whole process available resource recovery method.
IMPACT
UN Sustainable Development Goals addressed :
SDG 8 - DECENT WORK AND ECONOMIC GROWTH
The introduction and expansion of the anaerobic treatment process in Gansu can stimulate economic growth and job creation. Operating and maintaining biogas facilities require labor, which means new employment opportunities for locals. Furthermore, a growing biogas sector can stimulate related industries, like biogas equipment manufacturing and services, and organic fertilizer production and distribution. This could lead to the creation of a whole new sustainable sector in the economy, driving economic growth and providing decent work for the citizens of Gansu province.
SDG 11 - SUSTAINABLE CITIES AND COMMUNITIES
The anaerobic treatment process is significantly improving the quality of life in rural communities in Gansu province. By converting manure into biogas and fertilizers, the process reduces the odor that is typically associated with manure storage and treatment, improving local air quality. The localized generation and use of biogas can also contribute to energy security at a community level, making communities more resilient. Furthermore, using the resulting fertilizer product improves soil health and productivity, contributing to sustainable land management within these communities.
SDG 12 - RESPONSIBLE CONSUMPTION AND PRODUCTION
The anaerobic treatment process is turning livestock manure, which was traditionally seen as a waste product requiring disposal, into valuable resources such as biogas and fertilizers. This not only resolves a waste management issue but also creates a renewable energy source and a nutrient-rich supplement for agriculture. By doing so, it supports the principle of responsible consumption and production by minimizing waste and maximizing resource utilization. Farmers in Gansu are learning that every output, even waste, can be recycled and reused in another process, which drives them towards a more sustainable model of farming and waste management.
SDG 13 - CLIMATE ACTION
The biogas generated through the anaerobic treatment process is primarily methane, a greenhouse gas that, if released into the atmosphere, has a global warming potential approximately 28 times greater than that of CO2 over a 100-year period. By capturing this methane and using it for energy, the process significantly reduces greenhouse gas emissions that contribute to global warming and climate change. Moreover, replacing fossil fuels with biogas for heating or electricity generation further reduces carbon dioxide emissions. This approach offers Gansu a viable and effective strategy to mitigate the impact of agricultural practices on climate change.
