A method for purifying and recovering circulating cooling water and a horizontal continuous reaction device

Abstract

The invention discloses a method for purifying and recovering circulating cooling water. The circulating cooling water is subjected to primary purification in a high-voltage DC electrostatic field after evaporation, and then secondary purification is performed in a high-frequency dielectric barrier discharge plasma recovery electric field; after purification The condensed water is recovered to the cooling water circulation system; a horizontal continuous reaction device is also disclosed, including a closed cooling tower, a primary purification device and a secondary purification device; the cooling tower and the primary purification device are connected through pipelines, and the primary The purification device is connected with the secondary purification device; the bottom of the primary purification device and the secondary purification device are both provided with a water outlet, and the water outlet is connected to the cooling tower; Halo electrode and electrode plate; the secondary purification device is equipped with the first discharge electrode plate and the second discharge electrode plate corresponding to the high-voltage end and low-voltage end of the power supply; the whole system works in a cycle, and the recovery rate of circulating cooling water will reach 90% above.

Description

technical field [0001] The invention belongs to the field of purification and recovery of circulating cooling water, and relates to a method for purifying and recovering circulating cooling water by dielectric barrier discharge plasma coupled with direct current static electricity, and a horizontal continuous reaction device for purifying and recovering circulating cooling water. Background technique [0002] The relative scarcity and uneven distribution of water resources have a great impact on an industrial area with a large demand for industrial water consumption. Among them, the consumption of circulating cooling water accounts for 50% to 90% of the annual water consumption of enterprises. The circulating cooling water system is widely used in In petrochemical, electric power, steel, metallurgy and other industries, a large amount of water vapor will inevitably be discharged into the atmosphere when the system is working, and the water evaporation per hour is about 1.5% t...

AI Technical Summary

Problems solved by technology

At present, the plasma recovery circulating cooling water technology in practical application is mostly a vertical reaction device that combines plasma and condensation system and has a relatively simple structure. The consumption is large, and the impurities are easy to fall back into the circulating cooling water under the action of gravity during the treatment process. This method and the structure of the device are not conducive to the capture and degradation of the nucleating substances in the aerosol.

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