MINERALIZED WATER SWEETENING APPARATUS Russian patent published in 2004 - IPC

FIELD: agriculture, in particular, equipment for sweetening of mineralized water used in irrigated agriculture, industrial and agricultural water supply systems. SUBSTANCE: apparatus has sweetening ice platform capable of performing longitudinal and transverse inclination motions, ferroconcrete grid arranged above ice platform, ferroconcrete skirting extending along ice platform perimeter, feeding pit, vent chambers arranged below ferroconcrete grid, mineralized water accumulating pond with inlet channel and bottom water outlet, sweetened water accumulating pond, evaporating pond, and pipeline with gate, system of vertical cavities with locking devices arranged in their lower parts and adapted for allowing penetration of cold air of negative temperature and hot air, additional pipeline with pits and gates for discharge of brine into evaporating pond and sweetened water into sweetened water accumulating pond. Apparatus is further equipped with control and measuring complex for detecting mineralized water level at feeding pit outlet end and guard dams. Ferroconcrete skirting around ice platform and frozen ice bale are equal in height (in the range of 2,500-6,000 mm). Ferroconcrete grid on ice platform is arranged at height of 200-600 mm. Distance between vertical air conveying cavities and their square section sizes are set on the basis of the following ratios: where l is distance between air conveying cavities, m; α is size of section of air conveying cavities, m; m₀ is mineralizing of water to be sweetened, kg/cu.m; ∑t is total of daily negative temperatures of air during ice bale winter freezing period, C; k is proportionality coefficient, cu.m/kg; k₀ is size conformity coefficient, m/ C. EFFECT: increased efficiency of apparatus by freezing-on of ice and increased uniformity of temperature distribution inside ice block on ice freezing-on and defrosting during sweetening of mineralized water. 3 dwg, 3 ex