SOLMIDEFF to be presented at the European Desalination Society conference in Las Palmas de Gran Canaria this year.

December 16, 2021. Seville, Spain

In previous works by the authors, the synergies between a zero liquid discharge and a solar micro gas turbine have been described. This paper deals with the experimental proof of concept of the zero liquid discharge system, applicated to seawater desalination by means of brine concentration powered by the exhaust gases of a micro gas turbine which, although the engine installed in the test facilities is a conventional micro gas turbine, simulates the performance of a solar micro gas turbine following either a recuperative or non-recuperative power cycle to increase the exhaust thermal power if needed. The design phase, in which previously a hydraulic evaluation has been considered to assessing the general behaviour of the gas stream-brine interaction, has been carried out firstly with a cold air stream, employing different system configurations and delimiting the working region to, once the hot exhaust gases had been considered, address correctly the sizing and internal arrangement of the concentration chamber where the exhaust gases will be bubbled through the concentrate bulk. Furthermore, even if this process would be operated continuously in a real application, the experimental tests had been made in batches in order to fully characterise the thermo-chemical performance of the system.

Presentation info:
Experimental evaluation of a low-cost zero liquid discharge system driven by a micro gas turbine
Rafael González-Almenara, Jesús Montes-Sánchez, David Sánchez, Lourdes García-Rodríguez