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Caliche Soils as a Filter Medium for Treatment and Disposal of Wastewater

Dr. Larry P. Wilding, Ph.D., CPAg., Dr. Charles M. Woodruff, Jr., Phillip R. Owens

Through support from the Texas On-Site Wastewater Treatment Research Council, a project to search the literature relative to caliche materials as a medium for treatment and disposal of wastewater has been conducted. It was hypothesized before undertaking this effort that there would be a dearth of published and unpublished information on this subject. Specifically, the goals of the project were to:

  • Provide a working definition of “caliche” in relation to treatment of wastewater.
  • Perform a comprehensive literature review on the effectiveness of caliche soils as a bioremediation filter media in the treatment and disposal of wastewater.
  • Develop recommendations for future research that would address issues identified above.
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