Featured project:

Cayuga County Soil and Water Conservation District

Overview

Cayuga County Soil and Water Conservation District decided to undertake a digester project in 2006. The primary motivation of the project was to develop an economically sustainable model to address manure management issues facing southern Cayuga County dairies, improve the water quality and improve the quality of life for local Cayuga County residents, under the auspices of Cayuga County Soil and Water Conservation District.

The goal of the operation is to pay for the project using the savings from avoiding purchasing electricity and heat, income from the sale of electricity and renewable energy credits, tipping fees from food waste and the sale of biosolids. We are lookign to expand the project and construct an additional 633kW CHP and double the capacity of the facility to 1.2MW

Location:

Auburn, New York

Technology:

Anaerobic digestion is a collection of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domestic purposes to manage waste and/or to produce fuels. The process produces a biogas, a renewable energy, which can be used directly as fuel and digestates which can be used as nutrient rich fertilizer.

Environmental Benefits:

  • Recycles waste
  • Offsets fossil fuel use
  • Produces organic fertilizer

Highlights

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Reduced from our Atmosphere

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Micro Grid

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Renewable Electric Generation

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of organic matter waste is converted into renewable energy

Photos

Unique Features

This project is one of the first, if not the first, municipal projects in the U.S. that employs the principles of a community digester to address manure management problems for smaller farms.

Pressure Differential Mix Digester: This digester technology uses proprietary GBU technology that uses the pressure of biogas in the digester for its internal mixing. The structural principles guarantee reliable function, a long service life and practically maintenance-free operation. The design provides full control over vital process functions including thermal stability, continuous blending, homogenization, processing and mixing of high solids feedstock and co-substrates as well as excellent operating reliability and low operating costs.

Self-Sustaining Renewable Energy Enterprise: The Cayuga County Campus located near this facility is the first government facility in the United States to replace 82% of its energy needs (electricity and fossil) needs with renewable energy produced from animal manure.

The byproduct from the process can also be used to enhance the nutrient value of digester byproducts. Currently, American Biogas has two other systems working on farms in Cayuga County.

Fertilizer Bank: The excess nitogen rich liquid fertilizer that is not used by the participating farms can be stored by the District and provided to other nearby crop farms, which require fertilizer but have no existing animal manure feedstock of their own.

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