A treatment device and method for softening desulfurization wastewater

Abstract

The invention relates to a desulfurization waste water softening treatment device and method and belongs to the field of environmental water treatment in flue gas desulphurization systems. The desulfurization waste water softening treatment device comprises a waste water primary softening pond, a settling pond A, a waste water aeration softening pond, a settling pond B, a closed type flue gas aeration cooling pond and a cooling flue gas gas-water separator. A stirring device and an online pH monitoring instrument A are arranged inside the waste water primary softening pond. An aeration device B is arranged at the bottom inside the closed type flue gas aeration cooling pond. The invention further relates to a desulfurization waste water softening treatment method. By means of the device and method, the method of adjusting the desulfurization waste water pH value through hydrochloric acid in the traditional desulfurization waste water treatment technology is replaced with the method of achieving neutralization through CO2 in flue gas, the equipment cost of the system is reduced, and system safety is improved.

Description

technical field [0001] The invention relates to a treatment device and method for softening desulfurization wastewater, belonging to the field of environmental water treatment in flue gas desulfurization systems. Background technique [0002] As a power generation technology with mature technology, reliable operation and low cost, thermal power has always been and will be an important part of my country's energy structure for a long time. With the continuous development of the economy, the installed capacity of thermal power in my country has risen rapidly, and the environmental problems caused by thermal power have attracted more and more attention. Desulfurization wastewater from thermal power plants is one of the most difficult wastes to treat in coal-fired power plants due to its complex composition and difficult treatment technology. Desulfurization wastewater contains a variety of heavy metal ions, as well as extremely high concentrations of calcium, magnesium, sulfat...

AI Technical Summary

Problems solved by technology

Carbon dioxide is the main pollutant that causes the greenhouse effect, and a large amount of high-temperature flue gas can also cause environmental heat pollution

[0005] When the flue gas is aerated and softened, due to the high temperature of the flue gas, a large amount of water will evaporate and the droplets will splash into the environment, which will lead to the loss of water.

At the same time, since the splashed droplets are still in liquid form, which contains high concentration of salt, it will cause serious pollution to the environment

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