Dr. Mark Borchardt
Soil Microbiologist, USDA-ARS, US Dairy Forage Research Center

Dr. John Chastain
Associate Professor, Agricultural Waste Management, Clemson University

Planning a Solid-Liquid Separation System to Meet Manure Treatment and Management Goals

There are many reasons to add solid-liquid separation to the manure management system on a particular farm. One of the critical steps in the planning process is to clearly define the immediate and future treatment and management goals. For example, one goal may be to use solid-liquid separation to consolidate valuable plant nutrients from flush manure so that they can be better utilized for crop production. Another may be to reduce the loading rate for a biological treatment process. Yet another may be to reduce the size of an anaerobic digester. Not every technology will meet these diverse requirements.  The goal of this presentation is to provide a decision framework that will assist in the selection and implementation of solid-liquid separation technologies that will meet farm-specific manure treatment and management goals.

Dr. Kevin Janni
Professor, Dept of Bioproducts and Biosystems Engineering, University of Minnesota

Manure Odor Management

Odors can evoke strong emotions and stimulate physiological responses. Animal feeding operation owners and managers need to be aware of their emissions and the impact they have on their neighbors and community. Good neighbor relations and effective communications help identify odor problems and communicate actions to manage them. When considering mitigation practices weigh the costs, expected effectiveness, and how the practice fits into the overall operation while being mindful of neighbor and community concerns.

Dr. Becky Larson
Assistant Professor, Dept of Biosystems Engineering, University of Wisconsin-Madison

Dr. Mark Powell
Soil Scientist, USDA-ARS, US Dairy Forage Research Center

Doug Renk
Commissioning Engineer, BIOFerm USA

Dr. Ariel Szogi
Soil Scientist, USDA-ARS, Coastal Plains Soil, Water, and Plant Research Center

Nutrient Recovery Technologies from Animal Manure

Nutrient pollution, caused by too much nitrogen and phosphorus in the environment, is one of America’s most widespread, costly and challenging environmental problems, impacting many sectors of the U.S. economy that depend on clean water. The presentation will feature new ARS technology developed for recovery of nitrogen and phosphorus from animal manure and their potential use in dairy manure management systems.

Gordon Speirs
Owner, Shiloh Dairy, LLC

Dr. Mark Stephenson
Director of Dairy Policy Analysis, University of Wisconsin-Madison

Aaron Wunderlin
Research Specialist, University of Wisconsin-Discovery Farms

Evaluation of Feed Storage Leachate and Runoff System Design and Operation

As the use of bunker silos, stacking pads, silo bags, and commodity sheds are used more extensively for feed storage, concerns have arisen regarding the potential of leachate and runoff moving from these storage systems to waters of the state. Leachate and runoff collection systems have been designed to capture the leachate considered to have the most risk and store it for land application, while the rest overflows to a vegetated treatment area.  UW-Discovery Farms and members from the UW-Madison Biological Systems Engineering department have combined on-farm research efforts to evaluate the effectiveness of current leachate system designs and provide new optimized design recommendations to maximize nutrient collection and minimize volume collection.




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