New Waves March 2009

Breaking news about water resources research and education in Texas

TWRI completes New Technologies for Animal Waste Pollution Control project

Texas Water Resources Institute (TWRI) has recently completed the New Technologies for Animal Waste Pollution Control project, which identified, evaluated, and field-tested technologies for reducing nutrient levels in wastes from concentrated animal feeding operations and other sources.

Associate Professor of Biological and Agricultural Engineering and Extension Specialist Dr. Saqib Mukhtar said the project was an important avenue for technology providers to have their waste treatment systems evaluated on large-scale dairies for an extended time.

"All technologies tested had some positive impact on removing several pollutants from dairy lagoon effluent, but most technologies did not have an efficient, economically viable, and comprehensive solution to reducing soluble phosphorous from the treated effluent," he said.

"The project demonstrated that just because a technology performs very well to treat a few gallons of liquid manure does not guarantee the same results when it treats millions of gallons of manure," Mukhtar said.

Over the last four years of the program, TWRI has published three fact sheets, five final demonstration reports and 19 quarterly reports pertaining to the New Technologies project.

Now that the project is complete, resulting information will be communicated to dairy managers and other stakeholders. "The most beneficial information discovered through this project was the performance data and cost information for each respective technology," said TWRI Project Manager Lucas Gregory. "This data will enable individual producers to make informed decisions regarding the use and cost of implementing a specific technology on their farm. "

Collaborators for the program include TWRI, Texas AgriLife Extension Service, Brazos River Authority, Texas Commission on Environmental Quality, Texas Farm Bureau, and USDA Natural Resources Conservation Service. Funding was provided by the Texas State Soil and Water Conservation Board and U.S. Environmental Protection Agency.

Click here for more information on the Animal Waste Pollution Control program, or visit for a complete list of TWRI programs.

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