Development of schemes for desalting units and their technical and economic indices
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Desalted water, provided that it is obtained in units designed according to the specific features of the initial water, is not less than twice as cheap as distilled water in all cases.
The cost of the desalted water decreases with an increase in the throughput of the unit. For units with a throughput of 100,000 m3/year and more, the cost of desalted water is almost 20 times less than the cost of distilled water.
An analysis of the structure of the operating costs shows that the expenditure on maintenance decreases from 54% of the total cost for units with a throughput of less than 10,000 m3/year to 30% for units with a throughput of more than 100,000 m3/year. However, conversely, the expenditure on depreciation and repairs rises from 25% (for low-throughput units) to 40% (for high-throughput units). The costs of regeneration are in general between 14 and 20% of the total. Any increase in them beyond these limits (units No. 4 and 6) is due to the specific composition of the water.
To lower the cost of the desalted water it is desirable that the desalting process be automated.
KeywordsOrganic Chemistry Operating Cost Initial Water Specific Composition Economic Index
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- 1.V. P. Meleshko, G. L. Granovskaya, A. A. Mazo, N. F. Ionova, et al., in: The Theory and Practice of Sorption Processes [in Russian], Vol. 2, Voronezh (1968), p. 111.Google Scholar
- 2.Ibid., p. 87Google Scholar
- 3.State Pharmacopeia of the USSR [in Russian], 10th edition, Moscow (1968), p. 107.Google Scholar