Desulphurization waste water processing system

Abstract

The invention discloses a desulphurization waste water processing system. The desulphurization waste water processing system comprises a coal fired boiler, a static dust collector, a desulphurizationdevice, and a concentration tower; the coal fired boiler, the static dust collector, and the desulphurization device are connected successively though a flue gas pipeline; nozzles are arranged in theconcentration tower; the nozzles are connected with the desulphurization device through a desulphurization waste water pipeline; the concentration tower is provided with a flue gas inlet and a flue gas outlet; the flue gas inlet is communicated with a flue gas outlet on the static dust collector, and the flue gas outlet is communicated with the flue gas pipeline on the desulphurization device. Inapplications of the desulphurization waste water processing system, direct contact heat exchanged between flue gas waste heat and high salt-containing waste water (desulphurization waste water) is adopted, so that consumption of other heat resources is not needed, the technology is simple, equipment is less, occupied space area is small, maintenance amount is small, no additive is added, treatmentcost of each ton of water is about 20 yuan; evaporation flue gas of the concentration tower is introduced into the flue gas pipeline of the desulphurization device through the flue gas outlet, the desulphurization device inlet smoke temperature is reduced, and energy utilization rate is high.

Description

technical field [0001] The invention relates to a wastewater treatment system, in particular to a desulfurization wastewater treatment system. Background technique [0002] my country's current power supply structure is dominated by thermal power. The combustion of fossil fuels such as coal in thermal power plants has caused serious environmental problems. The sulfur dioxide emitted in it has caused harm to the ecological environment and produced acid rain. In order to control the emission of sulfur dioxide, each coal-fired power plant uses the flue gas desulfurization system dominated by limestone-gypsum wet flue gas desulfurization to control the emission of sulfur oxides. During the continuous circulation of the slurry in the limestone-gypsum wet flue gas desulfurization process, a certain amount of desulfurization wastewater will be generated, and the desulfurization wastewater must be treated. At present, the existing desulfurization wastewater treatment process genera...

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Problems solved by technology

At present, the existing desulfurization wastewater treatment process generally includes steps such as neutralization, flocculation, precipitation, and efflux. This method has the disadvantages of complex system, high investment and operating costs, etc.

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