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UDC 628.162:62-278

Andrianov A. P., Pervov A. G., Efremov R. V., Spitsov D. V.

Selection of efficient inhibitors for process flow schemes of the Black Sea water desalination


Sea water desalination by reverse osmosis has been widely used in drinking and domestic water supply. However, one of the major problems that complicate the operation of desalination facilities is the deposition of low solubility salts in membrane apparatus. In order to control the formation of crystal sediments on membranes different methods are used. Inhibitor dosing to raw water is the most efficient method. A variety of efficient inhibiting agents has been developed. Lately one of the main directions of studies in this field has been new types of phosphorus free and easily biodegradable inhibitors. Tests of six new phosphorus free inhibitors were carried out; the comparison with traditionally used Aminat-K inhibitor is given. The experimental dependencies that allow determining the rate of calcium carbonate scale formation in membrane apparatus are presented. Basing on the obtained results the optimal operational expenditures for sea water desalination were calculated. The study was aiming mainly at comparing the efficiency of newly developed and traditional inhibitors in the process of their use in sea water desalination schemes (by the example of the Black Sea water simulant). The conclusion of the efficiency of the inhibitors used is made on the basis of the minimum operational expenditures for desalination.

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