Rolled reverse osmosis membrane element

Abstract

The invention discloses a rolled reverse osmosis membrane element. The element consists of a central water producing pipe and a reverse osmosis membrane which is wound on the central water producing pipe, wherein the reverse osmosis membrane is folded to form a water inlet flow channel and a water producing flow channel; part of sections, far away from the central water producing pipe, of the two sides of the water inlet flow channel adjacent to a hem are closed and sealed, so that small sections of raw water inlets are formed at the places of the two sides close to the central water producing pipe respectively and that a concentrate water outlet is formed on the side of the water inlet flow channel opposite to the hem, wherein water inlet pipes are arranged in the raw water inlets; and the water inlet pipes are provided with a plurality of small holes facing the concentrate water outlet. The rolled reverse osmosis membrane element has the advantages of eliminating water inlet dead angles of the raw water inlets and avoiding scale formation at the raw water inlets, so that water quality is improved.

Description

technical field The invention belongs to the technical field of water purification treatment, and relates to a reverse osmosis membrane element for removing impurities such as sediment, silt, colloid, microorganisms, viruses, organic matter and inorganic salts in water, in particular to a roll-type reverse osmosis membrane element. Background technique At present, the known roll-type reverse osmosis membrane element is formed by winding the water purification membrane group composed of pure water diversion net, reverse osmosis membrane and water inlet diversion net on the central water production pipe, wherein the reverse osmosis membrane Folding, the water inlet guide net is located in the water inlet channel formed between the folded inner surfaces of the reverse osmosis membrane, and the pure water guide net is located in the product formed between the folded outer surfaces of the reverse osmosis membrane. In the water flow channel, this roll-type reverse osmosis membrane...

AI Technical Summary

Problems solved by technology

However, during the use of this roll-type reverse osmosis membrane, it was found that due to the water inlet at 90 degrees, there is a dead angle at the raw water inlet, and it is easy to scale after a long time, which affects the quality of the effluent water.

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