Desulfurization waste liquid treatment and reuse system and method

Abstract

The invention relates to a desulfurization waste liquid treatment and reuse system. The desulfurization waste liquid treatment and reuse system includes a desulfurizing tower, a filter pressing device, a reduction tower, a desulfurization waste liquid distributing device, an aeration device, a heating device, a flocculant charging device, a sedimentation basin, a desulfurization waste liquid waterpump and a reduction liquid water pump, wherein the desulfurizing tower is provided with a flue gas inlet, a desulfurizing agent inlet, a desulfurization waste liquid outlet and an exhaust port, a tower body of the reduction tower is provided with a flocculant inlet, the desulfurization waste liquid distributing device is arranged in the tower body, the aeration device is provided with an aeration nozzle group located on the lower side of the desulfurization waste liquid distributing device, the sedimentation basin is provided with a reduction liquid cleaning water pump, an inlet of the desulfurization waste liquid water pump communicates with the desulfurization waste liquid outlet, and an inlet of the reduction liquid water pump communicates with an inner cavity of the reduction tower;and a waste residue outlet of the sedimentation basin communicates with the filter pressing device, an outlet of the desulfurization waste liquid water pump communicates with the desulfurization wasteliquid distributing device, an outlet of the reduction liquid water pump communicates with a reduction liquid inlet of the sedimentation basin, and an outlet of the reduction liquid cleaning water pump communicates with the desulfurizing agent inlet. According to the desulfurization waste liquid treatment and reuse system, treatment and reuse of desulfurization waste liquid are convenient, the amount of a desulfurizing agent is small, and the desulfurization effect is good.

Description

technical field [0001] The invention relates to the field of flue gas desulfurization, in particular to a desulfurization waste liquid treatment and reuse system and a treatment and reuse method. Background technique [0002] The sulfur dioxide in the flue gas of the power plant boiler pollutes the environment; the utility model of Chinese patent application number 201620154089.1 discloses a self-circulating desulfurization tower, including: an outer cylinder; Gas port; inner cylinder, sleeved inside the outer cylinder, and connected and fixed with the outer cylinder through the support between the cylinders; spray device; exhaust gas intake device; air intake device; settling device; and, purge gas intake device . The traditional desulfurization tower has the disadvantages of troublesome desulfurization waste liquid treatment and reuse, large amount of desulfurization agent, and poor desulfurization effect; therefore, it is necessary to design a desulfurization desulfuriza...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of desulfurization waste liquid treatment and reuse in the current desulfurization tower, the desulfurization agent consumption is relatively large, and the desulfurization effect is poor, and to provide a desulfurization waste liquid treatment and reuse, and the desulfurization agent consumption is small. Desulfurization waste liquid treatment and reuse system with better desulfurization effect and treatment and reuse method

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