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Solutions for membrane distillation technology in desulfurization wastewater
Release time:
2024-06-12
On the other hand, PTFE hollow fiber membrane evaporation technology uses low-temperature evaporation, which can effectively utilize the existing waste heat sources in the factory. While reducing the amount of high salt water, it can also reduce the scale and investment of the evaporation crystallization system on a large scale; the system process is short and has It is conducive to equipment installation and operation and is a new direction for the promotion and application of zero wastewater discharge.
Desulfurization wastewater is mainly the discharge water from the absorption tower during the wet desulfurization of boiler flue gas (limestone/gypsum method). It has always been a difficulty in the treatment of high-salt wastewater in thermal power plants. The wastewater contains high calcium, magnesium, sulfate and other ions, resulting in The scale tendency is serious; at the same time, the chlorine content is high and the corrosiveness is strong, which requires high requirements for equipment material selection. Traditional treatment processes mainly remove turbidity, hardness and heavy metals in wastewater. They cannot separate salt from water and cannot meet reuse requirements, resulting in a large amount of water waste.
Anhui SCI-NANO Membrane has developed PTFE membrane distillation technology. The membrane distillation technology can use the waste heat of the power plant to concentrate and reduce the desulfurization wastewater. It can be used in conjunction with the crystallization system to achieve zero discharge of desulfurization wastewater while saving energy and reducing emissions. It can also be combined with salt separation. technology to realize the resource utilization of solid salt.
On the other hand, PTFE hollow fiber membrane evaporation technology uses low-temperature evaporation, which can effectively utilize the existing waste heat sources in the factory. While reducing the amount of high salt water, it can also reduce the scale and investment of the evaporation crystallization system on a large scale; the system process is short and has It is conducive to equipment installation and operation and is a new direction for the promotion and application of zero wastewater discharge.
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