Research Project Information

Research Project Summary Information

Demonstration of a Small Anaerobic Digester for Treating Farm Waste(ST6746-1)

The Dubara Company, Inc.


Innovative technologies can help farmers meet requirements for manure management in energy-efficient and cost-effective ways. Anaerobic digestion can minimize odors, which allows more options for more effective land spreading, with better use of nutrients and less nutrient runoff. Anaerobic digestion also generates methane gas that can be used to reduce farm energy costs. The Dubara Company had developed a new type of digester system in which effluent from two small digesters was used to activate manure digestion in a larger storage pit.

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Project Description

This project included the design and installation of a storage pit cover at Spring Valley Dairy, and installation of a dual-fueled power generator with heat recovery and heat transfer piping. Evaluation of the system was to follow.


Potential benefits included using a renewable resource to generate electricity and reduction in chemical fertilizer expenses, and odors. The system also showed promise for cost-effective application at smaller farms.

Project Results

The project never reached full operation. Difficulties were encountered with installing a cover over the irregular-shaped concrete storage pit. A special pump had to be fabricated to pump the high solids manure into the small activation digesters that were only 1,000 gallons in size. The conveyor designed to remove sand bedding from the covered pit also did not function as anticipated.


The Dubara Company, Inc.
1177 Rte 9
Castleton, NY 12033

Principle Investigator

Stephen Hoyt

Universities Involved


Project Type:

On-site Power Production

Technologies Types:

Anaerobic Digester

NYSERDA Contact Information

Thomas Fiesinger


R&D - Mfg Tech & On-Site Pwr

Contract Details

Start Date: 1/11/2010
Project Status: Active
Contract Number: ST6746-1

Last Updated: 3/13/2012