An ultra-high pressure open channel disc tube reverse osmosis membrane module

Abstract

The invention relates to an ultra-high-pressure open-type channel disc-type reverse osmosis membrane module, which belongs to the technical field of reverse osmosis membrane modules. It includes a membrane shell, the guide plate and the membrane bag are stacked and clamped in turn to form a reverse osmosis membrane, the reverse osmosis membrane is set on the central tie rod, and the central tie rod above the reverse osmosis membrane is sleeved with a sealing sleeve, The upper end flange, the upper support terminal flange and the upper support plate, the central tie rod located below the reverse osmosis membrane is sleeved with a sealing sleeve, the lower end flange and the lower support plate, the upper and lower support plates are located outside the membrane shell, The upper and lower support plates are tightened by a plurality of pressure-bearing tie rods, which are evenly arranged outside the membrane shell, and lock nuts are arranged at both ends of the central tie rod. The application prolongs the life of the membrane module and reduces the production cost; moreover, it can withstand ultra-high pressure; the concentration polarization of the membrane surface is reduced, and the deflector plate is not easy to puncture the membrane bag, thereby improving the service life of the membrane bag.

Description

technical field [0001] The invention relates to an ultra-high-pressure open-type channel dish-type reverse osmosis membrane module, which belongs to the technical field of sewage concentration and purification membrane modules away from reverse osmosis. Background technique [0002] Disc type reverse osmosis membrane technology (DTRO) is a membrane separation technology specially developed for landfill leachate treatment. It was successfully developed by ROCHEM in 1988 with the support of the German government. It was first applied to the Ihlenberg landfill in Germany in 1989. field. In recent years, membrane separation technology has developed rapidly and has been widely used in fields such as electric power, metallurgy, petroleum and petrochemical, medicine, food, municipal engineering, sewage reuse, and seawater desalination. The demand for membrane separation technology and equipment in various projects The volume increased even more rapidly. At present, in the field o...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an ultra-high pressure open flow channel disc-type reverse osmosis membrane module in view of the above-mentioned prior art, which can solve the problem of easy rusting of pressure vessels, O-rings being washed and displaced, single-piece membrane bags, etc. Disadvantages such as long welding time, small membrane area, poor fouling resistance, easy to cause concentration polarization, high investment cost and poor high pressure resistance

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