Plate-type membrane distillation water treatment device, and solar energy plate-type membrane distillation desalination system

Abstract

The invention discloses a plate-type membrane distillation water treatment device, and a solar energy plate-type membrane distillation desalination system. The plate-type membrane distillation water treatment device comprises a first feed inlet end plate, a first hydrophobic millipore membrane, a first membrane support net, a vacuum cooling plate, a second hydrophobic millipore membrane, a secondmembrane support net, and a second feed inlet end plate which are connected successively from bottom to top; a cooling runner is arranged in the vacuum cooling plate; the bottom end of the vacuum cooling plate is provided with a cooling water inlet hole communicated with the cooling water runner, and the top end is provided with a cooling water outlet hole communicated with the cooling water runner; the bottom end of the vacuum cooling plate is provided with a first gas suction hole communicated with a first square vacuum channel, and the lower wall surface of the vacuum cooling plate is provided with a second gas suction hole communicated with a second square vacuum channel. According to the plate-type membrane distillation water treatment device, an inlet material is taken as a cooling liquid for pre-heating, the condensation latent heat of steam is recycled, and system energy utilization rate is increased; the first membrane support net is adopted, so that damage is not easily caused in membrane distillation process, and device endurance and stability are improved.

Description

Technical field [0001] The invention specifically relates to a plate-type membrane distilled water treatment device and a solar plate-type membrane distillation desalination system, belonging to the technical field of membrane separation, seawater desalination and energy conservation and environmental protection. Background technique [0002] Fresh water is one of the basic substances that human society depends on for survival. However, due to geographical environment and demographic factors, many countries and regions in the world are experiencing varying degrees of freshwater shortage crisis. At present, desalination of salt water such as sea water is one of the important methods to solve the problem of fresh water. Existing seawater desalination technologies mainly include multi-stage flash evaporation technology and reverse osmosis technology. Multi-stage flash evaporation technology needs to consume high-grade energy to obtain fresh water, which has the disadvantage of hig...

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Problems solved by technology

[0009] In order to solve the defects of complex devices, high cost, and low overall water production efficiency and water production capacity in the existing flat membrane distillation technology, the purpose of the present invention is to propose a plate type membrane distillation water treatment device and a solar panel type membrane distillation desalination system , the device has a simple and compact structure, a large brine treatment capacity, high water production flux, and strong water production capacity.

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