Nanofiltration membrane water purifier

Abstract

The invention discloses a nanofiltration membrane water purifier. A raw water pump is connected with a raw water pipeline to be connected with a water inlet of a multi-media filter; a water outlet of the multi-media filter is connected with an ozone uniform mixing chamber; an ozone inlet of the ozone uniform mixing chamber is connected with an ozone generator through a high-pressure fan; a water outlet of the ozone uniform mixing chamber is connected with a water inlet of an active carbon filter; a water outlet of the active carbon filter is connected with a fine filter; a water outlet of the fine filter supplies water into a nanofiltration membrane filter through a high-pressure pump; a water outlet of the nanofiltration membrane filter is provided with an ultraviolet sterilization device and is connected with a purified water outlet pipe through the ultraviolet sterilization device; and a concentrated water outlet of a nanofiltration membrane is connected with a waste water drainage pipeline. Compared with the traditional nanofiltration membrane water purifier, the water purifier disclosed by the invention has the advantages that the chlorine resistance and the oxidative resistance of a nanofiltration composite membrane are 5 times or more; and in addition, the water flux is increased by 20-50 percent, the pollution resistance is improved by 2 times or more, and the water production rate of equipment is increased to 70 percent or more.

Description

technical field [0001] The invention relates to a water purifier, specifically a nanofiltration membrane water purifier, which belongs to the technical field of water treatment. Background technique [0002] At present, nanofiltration or RO membrane water purifiers or water purification equipment at home and abroad are usually in the majority, and there are also two-stage or even multi-stage reverse osmosis or nanofiltration membrane filtration in industry, but second-stage or even multi-stage reverse osmosis or nanofiltration membrane filtration is rarely used in households and other civilian fields. Level or multi-level, even if double reverse osmosis membrane filter elements are used, it is to increase the flow of pure water to cancel the pressure storage tank. Since there are bottled pure water filtered by two-stage reverse osmosis membrane filter elements on the market, its taste It is sweeter than that filtered by the primary reverse osmosis membrane filter, and the TD...

AI Technical Summary

Problems solved by technology

Another major disadvantage of nanofiltration membranes is that their anti-fouling ability is very weak. Many potential pollutants in raw water, such as colloids, proteins, microorganisms, and hard water ions that are easy to scale, are likely to cause fouling of the membrane, making the membrane performance rapid. Attenuation, which requires additional pretreatment to remove these components as much as possible, which also increases the cost of membrane use

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