At the request of Engineering Science, Inc., Denver office, Phoenix Bio-Systems designed and built an Aerobic Groundwater Bio-Treatment System for installation at the Lowry Landfill Super Fund site in Denver, Colorado.

     The seepage/surface water analysis indicated the presence of high BOD5, as well as chlorinated and non-chlorinated solvents, which were bio-degradable components comprising the major portion of contamination.  Effluent waters had to meet very high quality standards for discharge.

     It was determined that a combined treatment system, including a primary bio-reactor, followed by an air stripper, and both vapor- and liquid-phase carbon adsorption systems would be necessary to insure the treatment levels required.

     A treatability report and design for a dual fixed-film, aerobic bio-reactor, including a clarifier for sludge settling and removal was provided.  Installation Supervision, Operator Training, and Operations and Maintenance Manuals were provided.

     The Bio-Reactor was fabricated to Phoenix Bio-Systems design as a package unit by AAA Environmental Services of Florida.