Method for treating membrane distillation water

Abstract

The invention provides a processing method for membrane distilled water, wherein the relatively high temperature of the material liquid ready to be processed is kept by utilizing the heat absorbed by wall surfaces from the environment, and the material liquid ready to be processed is evaporated on one side of a hydrophobicity microporous membrane, and the material liquid steams on the material liquid side in membrane holes are forced to flow toward the distillate side in membrane holes, and the material liquid steams on the distillate side in the membrane holes are condensed on the distillate side, and the relatively low temperature of the distillate is kept by wet wall surfaces, and then the wet heat is emitted into the environment. The method can not only automatically acquire heat from the environment to heat the material liquid, but also automatically acquire cold sources from the environment to cool the distillate, so that the whole membrane distillation process does not need manual intervention; the method can not only continuously process the material liquid, but also constantly obtain the distillate; the method can not only be realized without the sun, but also be implemented at night; the method can be used in small scale as well as large scale.

Description

Technical field:

[0001] The invention belongs to the technical fields of new energy utilization, water treatment and environmental protection, and in particular relates to a method for automatically absorbing energy from the environment to process membrane distilled water. Background technique:

[0002] Membrane distillation technology has the advantages of general distillation and membrane separation. The principle of the process is to separate the two working water bodies by using a porous hydrophobic membrane that only allows water vapor molecules to pass through. The surface tension of the liquid prevents the liquid phase water on both sides from mixing with each other; if the liquid on both sides of the hydrophobic microporous film has a certain temperature difference, it will cause the two ends of the micropore to have different water vapor pressures, resulting in The liquid on the high temperature side evaporates to form a high vapor pressure and flows to the low temp...

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