Photo-thermal driving type membrane distillation treatment device for salt-containing industrial wastewater

Abstract

The invention relates to the technical field of industrial wastewater treatment, in particular to a photo-thermal drive type salt-containing industrial wastewater membrane distillation treatment device which comprises a horizontal treatment pipe, the front end and the rear end of the horizontal treatment pipe are each provided with a connecting end, and conical flanges are evenly arranged on the outer surface of the horizontal treatment pipe; the central treatment pipe is arranged in the center of the interior of the horizontal treatment pipe in parallel. Salt-containing industrial wastewater can be conveyed through the conveying interlayer between the horizontal treatment pipe and the central treatment pipe, and sunlight can be gathered on the surface of the horizontal treatment pipe through the flexible reflective film on the arc-shaped supporting plate, so that the salt-containing industrial wastewater conveyed on the inner side of the horizontal treatment pipe is heated; salt-containing industrial wastewater vapor molecules penetrate through the micropores and are conveyed to the arc-shaped condensation bin to be condensed, so that a solution is gradually concentrated, inorganic salt in the salt-containing industrial wastewater is separated out to complete treatment, energy is mainly supplied through solar photo-thermal driving during overall treatment, and the overall energy consumption is lower.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a photothermal-driven membrane distillation treatment device for salty industrial wastewater. Background technique [0002] With the rapid development of various technologies, the demand for materials is getting higher and higher. Polyimide film has become one of the membrane materials realized by flexible technology. Polyimide is mainly synthesized by dibasic anhydride and dibasic amine. However, In the production process, a large amount of production wastewater will be generated, such as sodium chloride beating tank wastewater, filtration process wastewater, etc. These wastewater contain a large amount of ammonia nitrogen and salt substances, etc. The direct discharge of these high-salt industrial wastewater will pollute the surrounding area Land and water, and saline wastewater has complex components and high treatment costs. At present, membrane separa...

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Problems solved by technology

[0003] The applicant found that the current industrial wastewater membrane distillation treatment equipment usually needs to heat the salty industrial wastewater to a certain temperature by electricity or boiler steam, and then pass the salty industrial wastewater after the temperature rise into the membrane distillation Processing equipment, so that there is a certain temperature difference on both sides of the membrane, and the distillation process is carried out through the vapor pressure difference, but this method requires additional electric energy for heating, and the overall energy consumption is high, and the processing capacity of a single processing device often has the best design processing It is difficult to flexibly adjust the processing capacity according to actual needs

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