Desalter, definition

At this stage no definite answer can be given about the date and required capacity, but it is generally accepted that by the end of the century, Israel will have to develop 500 to 700 million cubic meters of additional water capacity. Of this 100-200 million cubic meters would probably have to be supplied by desalting. At least a part of the required capacity will be obtained by desalting brackish waters which can not be used directly for agriculture. 

The inventory of all brackish water resources is not completed as yet, but the definite advantage of brackish water desalting over seawater desalting, makes it essential to carry out a comprehensive hydrological survey of brackish water potential in the country. 

Polyelectrolyte complexes are very promising materials for preparing semi-permeable membranes of definite permeability and selectivity The methods of preparation and the properties of membranes made of polyelectrolyte complexes based on strong polyelectrolytes, e.g. poly(sodium sterene sulfonate) and poly(vinylbenzyl-trimethyl ammonium chloride) were described These membranes may be applied for reverse osmosis in the desalting of sea-water, for dialysis and ultrafiltration in purifications and concentration of water solutions containing coUoids or micro-and macroparticles ... 

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