This paper describes the Zero Discharge Desalination design process and optimization done at the University of Texas at El Paso, as well as plans for pilot testing in Honduras in 2016. The target was to produce 250 liters of drinking water with less than 600 mg/L total dissolved solids (TDS) and 8000 liters of irrigation water with no more than 550 mg/L TDS with appropriate calcium, magnesium, and sodium concentrations suitable for crop irrigation. The desalination systems were powered completely by renewable energy. UTEP’s process is a PV-powered hybrid membrane process called Zero Discharge Desalination (ZDD). ZDD can achieve greater than 95% recovery and is able to recover (1) a solid byproduct (mostly gypsum) which can be used to improve soil conditions and (2) a liquid stream (mostly NaCl) which is used in the EDM process.
This presentation is available to AMTA Members only.
- Malynda Cappelle
- University of Texas at El Paso, Center for Inland Desalination Systems
- AMTA/AWWA Membrane Technology Conference, San Antonio, TX
- AMTA/AWWA Membrane Technology Conference
- El Paso, renewable energy, desalination