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Technical background and significance of circulating cooling water?

Jun 25, 2019

Recirculating cooling water is a major item of industrial water consumption. In petrochemical, electric power, steel, metallurgy and other industries, the use of recirculating cooling water accounts for 50-90% of the total water used by enterprises.Due to the different salt content in the raw water, the circulating cooling water must discharge certain concentrated water and replenish new water when it is concentrated to a certain ratio.A 300000 KW condensing units, circulating cooling water to reach 33000 tons/PM, the salt content in the raw water is 1000 mg/L, enrichment factor of 3, then the heavy water circulating cooling water discharge around in about 6 to 8 ‰, which is 198-264 m3 / h, 

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and need to add new water is equal to the drainage and evaporation loss, supplement water quantity is about 2-2.6% of circulation water, will be about 660-860 m3 / h, the amount of water consumption and wastewater discharge is very big.Due to the restriction of concentration ratio of circulating cooling water, a certain amount of concentrated water must be discharged and a certain amount of new water added in operation.The salt content, PH value, concentration of organic matter and suspended matter in cooling water should be controlled within a reasonable allowable range.It is of great significance to treat and reuse the concentrated water discharge.It can not only improve the reuse rate of water, save water resources, but also greatly improve the overall condition of circulating cooling water.