New Waves March 2009

Breaking news about water resources research and education in Texas

New Publications/Papers

Field Demonstration of the Performance of an Electrocoagulation System to Reduce Phosphorus and Other Substances from Dairy Lagoon Effluent, S. Mukhtar, K. Wagner, L. Gregory, Texas Water Resources Institute Report TR-346, 2009

Two upper North Bosque River segments were designated as impaired in 1998 due to point source and nonpoint source (NPS) pollution of phosphorus (P) to these segments in the watershed. As a result, two Total Maximum Daily Loads (TMDLs) were applied which called for the reduction of annual loading and annual average soluble reactive P (SRP) concentrations by an average of 50%. This demonstration was conducted to evaluate the efficacy of a prospective new technology, an Electrocoagulation (EC) system, to potentially aid dairy farmers in meeting goals set by TMDLs.

Field Demonstration of the Performance of a Geotube® Dewatering System to Reduce Phosphorus and Other Substances from Dairy Lagoon Effluent, S. Mukhtar, K. Wagner, L. Gregory, Texas Water Resources Institute Report TR-345, 2009

This demonstration was conducted to evaluate the efficacy of a prospective new technology, the Geotube® dewatering system that may aid dairy farmers in reducing P from lagoon effluent to be applied to waste application fields and thus reducing NPS pollution.

Field Demonstration of the Performance of the L4DB® Microbial Treatment System to Reduce Phosphorus and Other Substances from Dairy Lagoon Effluent, S. Mukhtar, S. Rahman, L. Gregory, Texas Water Resources Institute Report TR-344, 2009

The efficacy of a prospective new technology (i.e.L4DB® microbial treatment system) was evaluated, which may aid dairy farmers in reducing P from lagoon effluent. In many cases, this effluent is applied to waste application fields (WAFs) as irrigation water; thus reducing P in the effluent can have a direct impact on NPS pollution in the watershed.

Cycling of Geotube® Solids from Dairy Lagoons Through Turfgrass Sod, R. Schnell, M. Tahboub, D. Vietor, C. Munster, T. Provin, S. Mukhtar, Texas Water Resources Institute Report TR-343, 2009

Although polyacrylamide is designated as a non-toxic additive by USDA, its building block, acrylamide, is a potential nerve toxin in humans and causes birth defects and cancer in animals. A concentration limit of 500 ppm acrylamide in polyacrylamide preparations has been established for water treatment applications.

Field Demonstration of the Performance of Wastewater Treatment Solution (WTS®) to Reduce Phosphorus and other Substances from Dairy Lagoon Effluent, S. Mukhtar, S. Rahman, L. Gregory, Texas Water Resources Institute Report TR-342, 2009 As part of this demonstration, the efficacy of a prospective new technology (i.e. wastewater treatment solution, WTS®) was evaluated, which may assist dairy farmers in reducing P from lagoon effluent.

Measuring Seepage Losses from Canals Using the Ponding Test Method, E. Leigh, G. Fipps, Texas AgriLife Extension Service publication, B-6218

The ponding test method is an accurate way to measure seepage losses from irrigation canals. This publication provides complete details for using this method, including sections on preparing for the test, constructing the dam, selecting and installing equipment, measuring canal shapes, and calculating seepage losses from data collected.

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