Deuel Vocational Institution - Reverse Osmosis Water Treatment Plant and Brine Disposal System

State of California Department of Corrections, 
California

Deuel Vocational Institution - Reverse Osmosis Water Treatment Plant and Brine Disposal System

Service Type: 
Project Highlights: 
  • Desalinate brackish groundwater with iron and manganese.
  • Evaluate brine management options for RO concentrate disposal.
  • Design of distribution system main, reservoir, and pump station.
Brine concentrator
Carollo is evaluating concentrate disposal options, which may include a zero discharge brine concentrator/evaporation pond process.

Carollo was selected by the State of California Department of Corrections (CDC) to design an RO treatment plant, brine disposal system, and non-potable water distribution system improvements for their Deuel Vocational Institution, near Tracy, California. The project provides an appropriate quantity and quality of potable water such that wastewater effluent discharge TDS concentrations are reduced to acceptable levels.

Key project elements include the following:

  • 0.6-mgd RO treatment plant.
  • 200-gpm brine disposal system.
  • Non-potable distribution main for irrigation that consists of 1,000 feet of pipeline, a 750,000 gallon storage tank, and a pump station.

The RO treatment plant will treat high TDS groundwater with modest concentrations of iron and manganese. The treatment plant design will not include iron removal, but the well and groundwater conveyance system will be designed to prevent air from entering the system, and keep the iron and manganese in solution (sulfuric acid will also be used).

The brine disposal system will consist of either a brine concentrator and a 3-acre evaporation pond, or a deep injection well. A preliminary design evaluation will determine which option is most viable. The project cost is $6.9-million, and the system was put into operation Summer 2007.