Study on Desulfurization Wastewater Treatment of Power Plant Based on Flue Spray Evaporation Technology
In order to realize zero discharge of desulfurization wastewater from thermal power plants,the desulfurization wastewater treatment research based on flue spray evaporation technology was carried out.First,the wastewater is pretreated to remove suspended solids,and then it enters the bypass evaporator.The bypass evaporator utilizes a small amount of high-temperature flue gas inside the power plant flue to evaporate and atomize the wastewater.The crystallized salt and fly ash after evaporating the wastewater are captured by the dust collector,and at the same time,the water vapor and flue gas enter the desulfurization tower for condensation and reuse.A practical application effect test was conducted on a power plant in Shanxi,and the results showed that the inlet temperature of the bypass evaporator used in the project was between 357-364℃,and the inlet temperature was between 153-162℃,indicating good evaporation effect.The average impact efficiency on the boiler is 0.08%,and the impact effect is small.This project system can achieve zero discharge of desulfurization wastewater in the thermal power plant,effectively solving the problem of desulfurization wastewater treatment in the power plant,improving wastewater treatment efficiency and resource utilization.
bypass flue spray evaporation technologythermal power plantsleakage wastewatertemperatureevaporation
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