FIELD: water supply.
SUBSTANCE: invention can be used in power engineering, chemistry, and petroleum refining. The drainless circulating water supply system 1 for heat-utilising equipment includes a cooling tower 2, makeup water and blowoff water pipelines 4 and 5, respectively, and a chemical water treatment unit 6. The chemical water treatment unit 6 includes a pre-treatment unit 7, a Na-cation filter 8 with a pipeline 21 for regeneration thereof, a concentrate tank 15 of the second-stage reverse osmosis unit, a Na-cationised water collection tank 9, reverse osmosis units 12 and 13 of the first and second concentrate stages, respectively, a feed water pipeline 17 of unit 12. The permeate pipeline 24 of units 12 and 13 is connected to the circulating water pipeline 3. The concentrate pipeline 20 of unit 13 is connected to tank 15, the pipeline 22 of spent regeneration solution of the Na-cation filter is connected to the system 25 for supply thereof for spraying in the vapour-air stream exiting the cooling tower 2. The pipeline 23 for the washing water of the Na-cation filter is connected to tank 9.
EFFECT: autonomous operation of the circulating water supply system in a drainless mode, ensured multiplicity of evaporation 3 in a non-scaling and anti-corrosive mode.
1 cl, 1 tbl, 1 dwg, 2 ex
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