Solar-energy-based seawater desalination or sewage purification apparatus and solar-energy-based seawater desalination or sewage purification method

Abstract

The invention provides a solar-energy-based seawater desalination or sewage purification apparatus and a solar-energy-based seawater desalination or sewage purification method. According to the apparatus, the apparatus contains a graphene filtration membrane; to-be-treated seawater or sewage passes through a ceramic filtration layer so as to achieve the first purification treatment of the water body; the first filtration water passes through the graphene filtration membrane so as to be filtered again to obtain the second filtration water, and the graphene filtration membrane has effects of heat absorption and heat transfer, and can evaporate the water passing through the membrane so as to achieve the third purification to prepare the purified water; the apparatus can completely use solar energy so as to achieve advantages of energy saving and environmental protection, and can purify sewage to obtain the purified water; the apparatus can further be used in the technical fields of seawater desalination and the like; and the apparatus has advantages of simple structure, complete purification, easy operation, short purification cycle and the like, and can meet small-scale production requirements and large-scale production requirements.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a solar energy-based seawater desalination or sewage purification device and a solar energy-based seawater desalination or sewage purification method using the device. 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, e...

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

Images