2010
EMSS 2010 Proceeding
Diagnosis of the open-gain reverse osmosis desalination unit
Authors: Kaltoum Maklouf, Kamilia Ben Youssef, Amanallah Guizani, Hamza Elfil
Abstract
In the framework of the OPEN-GAIN project (OPtimal ENgineering design for dependable water and power Generation in remote Areas using renewable energies and INtelligent automation) a Reverse Osmosis unit was installed at CRTEn (Tunisia) by the end of 2008. This prototype, which needs 5kW/m^3 as power demand, was designed to desalinate well water with about 15 g.L^-1 TDS (Total Dissolved Salts). It provides 1m^3/h permeate flux with approximately 600 mg.L^-1 TDS with 60% recovery rate. The RO unit was running in both closed and open circuit to desalinate well water. Theirs performances are registered and analyzed. The different desalinate waters (Feed, produced, reject) are characterized to prevent scaling and aggressiveness. Comparing to TDS values, the inlet water conductivity sensor is suspected to present some defaults. The reliability of the conductivity sensor is tested by a model based on a semi-empiric formula, function of water conductivity, of the produced water flux.
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