Reverse osmosis membrane element realizing water inflow from side surface

Abstract

The invention discloses a reverse osmosis membrane element realizing water inflow from a side surface. The reverse osmosis membrane element comprises a reverse osmosis membrane group, a central tube member and a pure water pipeline. Raw water is fed from the side surface of the reverse osmosis membrane group; the reverse osmosis membrane group is bidirectionally wound to form a pure water flow channel and a water inflow channel respectively located in and out of the reverse osmosis membrane group, and a pure water pipeline is located in the pure water flow channel; the central tube member includes a wastewater outlet channel and a body arranged around the wastewater outlet channel; the wastewater outlet channel is located in water inflow channel; the body includes a main body portion and anotch; the side surface of the main body portion is provided with a plurality of wastewater passing holes communicating with the wastewater outlet channel; and the pure water pipeline is arranged inthe notch, and the side surface of the pure water pipeline is axially provided with a number of pure water passing holes. The design of the reverse osmosis membrane element realizing water inflow fromthe side surface in the invention can well improve the surface flow velocity of a membrane, reduce the phenomenon of concentration polarization of an RO membrane, improve the anti-pollution ability of a household RO membrane element and the water recovery rate of the RO membrane, and prolong the service life of the reverse osmosis membrane group.

Description

technical field [0001] The invention relates to a side water inlet reverse osmosis membrane element. Background technique [0002] The water inlet method mainly adopted by the existing RO membrane is: the raw water enters one end, the concentrated water exits the water, and the central pipe exits the pure water mode. This method has a short process, a low membrane flow rate, a low water recovery rate, and concentration polarization. Large, it is easy to cause pollution of the membrane core, which will shorten the service life of the membrane element. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a reverse osmosis membrane element for side-feeding water. [0004] The present invention is achieved through the following technical solutions: a reverse osmosis membrane element with side water inlet, characterized in that it includes a reverse osmosis membrane group, a central pipe ...

AI Technical Summary

Problems solved by technology

[0002] The water inlet method mainly adopted by the existing RO membrane is: the raw water enters one end, the concentrated water exits the water, and the central pipe exits the pure water mode. This method has a short process, a low membrane flow rate, a low water recovery rate, and concentration polarization. Large, it is easy to cause pollution of the membrane core, which will shorten the service life of the membrane element

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