Reverse osmosis membrane element and purification system

Abstract

The invention discloses a reverse osmosis membrane element and a purification system, and relates to the technical field of water purification systems. The reverse osmosis membrane element comprises a central pipe, an electrode assembly, a scrubbing assembly and a reverse osmosis membrane assembly, the central pipe extends in the front-back direction, a water inlet is formed in the front end of the central pipe and used for conducting raw water, a water outlet is formed in the side portion of the central pipe, a first reverse osmosis membrane is arranged on the inner wall of the central pipe, and a second reverse osmosis membrane is arranged on the inner wall of the first reverse osmosis membrane. The first reverse osmosis membrane covers the water outlet and is used for filtering raw water; the electrode assembly is arranged in an inner cavity of the central pipe and is used for removing impurities from raw water; the scrubbing assembly is arranged in the inner cavity of the central pipe and is used for descaling the first reverse osmosis membrane; the reverse osmosis membrane group is wound on the side part of the central pipe and is used for separating raw water into pure water and concentrated water. The invention aims to solve the problem that the membrane flux is reduced due to the fact that solid precipitates are accumulated on the surface of a reverse osmosis membrane when an existing reverse osmosis device runs.

Description

technical field [0001] The invention relates to the technical field of water purification systems, in particular to a reverse osmosis membrane element and a purification system. Background technique [0002] Water treatment methods include physical treatment and chemical treatment. Human beings have used water treatment methods for many years. Physical methods include the use of various filter materials with different pore sizes, and the use of adsorption or barrier methods to exclude impurities in water. The most important adsorption method is to use activated carbon for adsorption. The barrier method is to pass water through the filter material, so that the larger impurities cannot pass through, and then obtain cleaner water. Reverse osmosis technology is a new high-tech membrane separation in recent decades. It uses a highly selective reverse osmosis membrane, uses the reverse osmosis principle of water molecules under pressure, and passes part of the raw water through t...

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a reverse osmosis membrane element and a purification system, aiming to solve the problem that the existing reverse osmosis device accumulates solid precipitates on the surface of the reverse osmosis membrane and causes the membrane flux to decrease

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