Next Year's Conference:
October 21-23, 2013 • Columbus, Ohio

BioCycle Renewable Energy from Organics Recycling Conference

Presentation Descriptions
Tuesday, October 30, 2012 — Track 1

Updated 10.12

Presentation previews:   Monday: Plenary | Track 1 | Track 2 | Track 3   Tuesday: Track 1 | Track 2 | Track 3

Tuesday, October 30, 2012 | | TRACK 1 || 8:30 AM — 10:15 PM

Digester System Selection, Optimization

System Failure Analysis, Corrective Actions and BMPs
Joe Tesar, Quantalux, LLC
Dana Kirk, Michigan State University

Michigan State University (MSU) received a grant from the U.S. Department of Agriculture to conduct an analysis of digester failures. Six areas were analyzed: Site planning/ design; Engineering; Construction and equipment selection; Biogas utilization; System controls; and Operation, including management and communications. Findings of the analysis will be reported.

Analysis, Troubleshooting To Put Digester Back On Track
Bernie Sheff, UTS Residual Processing, LLC

Lessons Learned In System Procurement, Start-Up
Jimmy Daniels and Terry Smith, Hampton Feedlot
Hampton Feedlot, a custom beef cattle feeding operation in Triplett, Missouri, invested in an anaerobic digester system to improve manure handling and lower the load on its lagoon. The induced blanket reactor digester is comprised of six, 35,000-gallon tanks. The facility has two 300 kWh gas engines; the feedlot has a power purchase agreement with Kansas City Power and Light. Presenters will discuss challenges faced with procuring, building, starting up and managing the first farm digester in Missouri, and one of the few digesters in the U.S. processing beef cattle manure.

Large-Scale AD Integration Optimizes Project Success
Shane Chrapko, Himark BioGas

Tuesday, October 30, 2012 | | TRACK 1 || 11:00 AM — 12:15 PM

Biogas Utilization: Municipal, Industrial Wastewater Treatment

National WWTP Biogas Data Project
Yinan Qi, Black & Veatch
Findings from a national data collection project on wastewater treatment plant biogas will be provided. Data includes whether or not wastewater treatment plants surveyed are accepting outside substrates such as FOG and food waste into their digesters, as well as how the plants are (or are not) utilizing the biogas produced.

Lessons Learned In Biogas Utilization
Kenneth Gambaro, Metropolitan St. Louis Sewer District
The St. Louis Sewer District's Missouri River Treatment Plant (MRTP) has a current design flow of 28 million gallons/day (mgd), with a peak design flow of 80 mgd. The facility is undergoing a major upgrade, including retrofits of its four anaerobic digesters. The plant has three Waukesha engines/generators, each rated at 335 kW, as well as a Unison gas conditioning system. Heat recovered from the engines is used to maintain a 98°F process temperature in the anaerobic digesters, and to heat the Administration Building in cold weather. Details on biogas utilization and heat recovery will be provided.

AD Treatment of Brewery Wastewater
Steve Pennington, Anheuser-Busch
The Anheuser-Busch brewery in St. Louis has installed the largest high rate anaerobic system in the world, treating 2.5 million gallons/day of brewery wastewater. The Bio-Energy Recovery System (BERS) includes high rate reactors that remove 70,000 lbs/day of BOD (80 to 90% removal), saving Anheuser-Busch $21,000/day. BERS generates 800,000 cubic feet of methane daily, which is combusted in the brewery's Powerhouse and reduces overall fuel consumption by 7.5 percent.

Tuesday, October 30, 2012 | | TRACK 1 || 1:45 PM — 3:30 PM

Managing Anaerobic Digestion Systems

Managing AD Systems For Profitable Performance
Dennis Totzke, Applied Technologies, Inc.
Presentation covers how to optimize biogas production and minimize disposal and O&M costs. Topics to be discussed include management of inputs — feedstocks, energy, chemicals and labor — and management of a complex biochemical process, focusing on operating within design parameters, mixing (which affects converstion rate and biogas production) and temperature and pH control. The last section of the presentation looks at management of the outputs — biogas, liquid, solids and nutrients — as well a top 10 list of AD system management insights.

Substrate Testing, Tracking Influent Streams For Acceptable Digestibility
Fred Roland, Agresource, Inc.

Case Study 1: Dane County (WI) Community Digester
Monte Lamer, Clear Horizons
The Dane Community Biogas System is private/public partnership that operates a codigestion facility with manure from multiple farms and other organic substrates. Features and benefits of Biogas Energy System will be presented, as well as challenges associated with owning, designing, building and operating the facility. Benefits to all partners involved in the project will be discussed.

Case Study 2: Vir-Clar Farms
Grant Grinstead, Northern Biogas
Complete mix digester is processing manure from about 1,200 dairy cows. Manure is mixed in the digester with liquid effluent from the solid separators and other organic wastes from the farm (e.g., bunker wastes and waste feed). Separated solids are used as bedding. Biogas generated from the digester is fed into the engine-generator to produce electricity, which is sold to Alliant Energy under a sell-all contract. Heat from the engine is collected and used to heat the digester, the separator room, and water for the calves. Lessons learned in optimizing digester performance, working with a utility, and utilization of by-products will be discussed.

Tuesday, October 30, 2012 | | TRACK 1 || 4:15 PM — 6:00 PM

University Codigestion Systems

Plug Flow Digester Operations Utilizing Dairy Manure and Food Waste
Louis Faivora, Michigan State University
A new 225,000-gallon plug flow anaerobic digester at the Michigan State University Dairy Teaching and Research Farm is part of an integrated research complex intended to advance waste to resource projects. Start-up of the digester commenced in late September 2011 with the system utilizing dairy manure mixed with wood shavings as bedding. In November the feedstock blend was expanded to include cafeteria food waste as well as other agricultural waste products (poultry eggs). Food waste was delivered from campus dining facilities in two forms — pulped postconsumer and unprocessed preconsumer/post-production food waste. Use of food waste as a feedstock increased gas production, however, this material also presented several logistical and operational challenges. Storage containers were required to be cleaned upon delivery, large pieces of food needed thorough mixing to facilitate pump transfer, operators were responsible for intercepting any nonorganic material, and digester monitoring intensified because the possibility of digester failure increased due to the rise in organic loading rate. Additionally, special attention was placed upon investigating how well a plug flow digester would operate with food waste as a primary feedstock and if gas production or quality would be negatively impacted due to the lack of mixing. Results to date indicate that a plug flow digester can be successfully operated with dairy manure and food waste as the primary feedstocks. This presentation will focus upon the logistics and performance of this system during the first year of operation.

Codigestion Project Evolution And Design
Donna Barlow Casey, Vermont Technical College
Presentation discusses developments with design of Vermont Technical College's (VTC) codigestion project. The facility is being permitted as a farm digester, with at least 51 percent of the feedstocks coming from VTC's farm operations. Food processing residuals will be added as a substrate.

Dry Fermentation On University Campus — First Year Analysis
Brian Langolf, University of Wisconsin – Oshkosh
Last year's BioCycle conference featured a tour of the recently commissioned BIOFerm™ dry fermentation facility located on the University of Wisconsin – Oshkosh campus. This facility accepts food waste from campus cafeterias, local food and yard waste as well as some farm bedding material and produces electricity that is sold back to the grid. This presentation will incorporate some of the challenges and successes encountered at the plant during commissioning and lessons learned after one year of operation. Focus will be directed towards feedstock delivery, handling, and other daily process improvements, as well as management of digestate and biogas production and power generation and heat recovery.