Yuma, Arizona

PACE is providing Dateland Public Service Co. with inland-desalination alternatives, engineering design, environmental permitting, and grant funding application services to improve and expand their existing groundwater Reverse Osmosis (RO) treatment system. The groundwater in the Dateland basin contains several trace contaminants including arsenic and fluoride. The groundwater also contains irrigation inhibitors boron, chloride, and sodium, and overall contains high levels of TDS. The contaminants must be removed to comply with primary and secondary drinking water standards. PACE investigated several process modifications and alternatives using Performance Based Specifications to deliver a cost effective, flexible and fundable project using an advanced RO process. The upgrade and expansion allows for the reuse of existing infrastructure, but with significantly higher permeate recovery than the existing RO system. It also produces more “wet” water from the existing supply, reducing waste and improving efficiency. In addition to the mechanical process work, PACE is also providing a preliminary alternative energy evaluation for the use of PV solar systems to power the expanded plant. The Dateland Water Plant Expansion is federally funded by USDA, Rural Development and Water Infrastructure Finance Authority.

Advanced Elements:

  • Investigation of several process modifications and alternatives using performance-based specifications to ensure Utility’s objectives were met and federal funds were secured.
  • Upgrade reverse osmosis system to innovative high recovery process to reduce waste and improve plant efficiency.
  • Alternative energy design for use of photovoltaic solar systems to further provide energy efficiency and lower capital cost.