Seawater desalination or sewage treatment device and method based on solar energy

Abstract

The invention discloses a graphene water treatment device and method based on solar energy. The device contains a graphene film and a graphene filter film, wherein the graphene film can be used for heat absorption and heat transfer, and the graphene filter film can emit heat and carry out secondary filtration on water vapor so as to prepare purified water. The device can fully utilize solar energy, is energy-saving and environment-friendly, and purifies sewage to obtain purified water; moreover, the device can also be applied to the technical fields of seawater desalination and the like; and the device has the advantages of simplicity, complete purification, easy operation, short purification cycle, capacity of realizing small-scale production and meeting large-scale production demands, etc.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a device and method for seawater desalination or sewage treatment based on solar energy. Background technique [0002] As we all know, the earth is rich in water resources, but the fresh water available for human consumption only accounts for 2.53% of it. Seawater desalination is an open-source incremental technology of water resources, not only that, but also the recycling and reuse of domestic sewage, industrial wastewater and other sewage is also an incremental technology of water resources. [0003] At present, there are mainly the following methods for sewage treatment: (1) Physical and chemical methods, which mainly include deposition, flotation, adsorption, screening, coagulation, oxidation, ozonation of suspended solids, particles, chromaticity and toxic chemicals Effect, electrolysis, reverse osmosis, ultrafiltration and nanofiltration, etc. The mai...

AI Technical Summary

Problems solved by technology

However, it has one of the biggest disadvantages, that is, in the process of sewage purification, a large amount of electric energy needs to be introduced, which is not suitable for large-scale production. It not only consumes a large amount of electric energy, but also may waste more due to the development of electric energy. Nuclear energy, biomass, coal and other energy sources, more seriously, bring a series of other environmental pollution problems

[0004] The current seawater desalination methods mainly include distillation and reverse osmosis. The distillation method needs to consume a large amount of heat source. Although the reverse osmosis method has a higher desalination rate and lower energy consumption, it is expensive and not conducive to industrialization. New technology to be developed

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