Concentrated brine treatment method

Abstract

The invention belongs to the technical field of wastewater treatment, and specifically discloses a treatment method for concentration of strong brine. The strong brine is fed into a high-dispersion screen of a high-dispersion chamber through a water outlet of a high-pressure water pump and is dispersed into micro superfine liquid particles; a negative pressure blade rotates to enable a negative pressure to be formed in the high-dispersion chamber; a steam pump is turned off to impel a spring to drive a piston to move downwards; and a switch is turned on, the steam pump is started, the temperature of the high-dispersion chamber is raised, and the high-dispersion chamber continuously performs high-dispersion concentration on the strong brine at a relatively high temperature. The scheme provides a treatment method for concentration of the strong brine, which enables the high-dispersion chamber to keep a relatively high temperature, and enables liquid to have sufficient vapor pressure.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment. Background technique [0002] In the production process of chemical, electric power, petroleum, pharmaceutical and metallurgical industries, a large amount of concentrated brine is discharged, mainly including reverse osmosis concentrated brine, circulating cooling system sewage and boiler sewage. This type of wastewater contains a large amount of dissolved inorganic salts , the salinity can be as high as tens of grams per liter. If such wastewater is directly discharged into the receiving water body (river, river, lake or sea, etc.), it will break the balance of the receiving water body and cause serious damage to the biological environment in the receiving water body. Destruction threatens the survival of animals and plants in the water. [0003] At present, the commonly used concentrated brine treatment processes include multi-effect evaporation, electrodialysis and reverse osmos...

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Problems solved by technology

[0003] At present, the commonly used concentrated brine treatment processes include multi-effect evaporation, electrodialysis and reverse osmosis, etc. These treatment processes not only have the disadvantages of large equipment investment, high treatment cost and poor economy, but also the high-concentration brine produced cannot be effectively disposed of. The use of direct evaporation not only causes high energy consumption, but also is easy to scale, resulting in waste of resources and other shortcomings

[0004] In the prior art, the high-dispersion method is used to treat the concentrated brine, and the concentrated brine is highly dispersed through the high-dispersion equipment, so that the concentrated brine forms extremely fine liquid particles of different sizes and forms a highly dispersed mist with the gas. The gas-water ratio is reduced, and under the action of vapor pressure, the water in the concentrated brine is released as water vapor, and the concentration of the concentrated brine is reduced and concentrated, so as to realize the treatment of industrial wastewater, but the following problems exist in the prior art: high dispersion is an absorption Thermal process, such as the temperature of the high-dispersion chamber is not high enough, resulting in insufficient vapor pressure of the liquid, so that a large amount of water vapor cannot be formed, which affects the efficiency of liquid dispersion into water vapor, and then the dehydration efficiency of concentrated brine decreases, and the concentrated brine concentration effect Difference

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