Hollow fibrous reverse osmosis composite membrane and preparation method thereof

A reverse osmosis composite membrane, hollow fiber technology, applied in reverse osmosis, semipermeable membrane separation, chemical instruments and methods, etc. The effect of good water quality, small volume of retained material and strong anti-pollution ability
CN101804302AInactive Publication Date: 2010-08-18江苏朗生生命科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
江苏朗生生命科技有限公司
Publication Date
2010-08-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a hollow fibrous reverse osmosis composite membrane, which comprises more than ten abreast-arranged hollow fibrous membrane tubes, wherein the outer walls of the two ends of each hollow fibrous membrane tube are in sealing connection; the molecular weight cut-off of the fibrous membrane tubes is 15,000 to 30,000; the inner diameter of each fibrous membrane tube is 0.8 t 1.0 mm, while wall thickness is 0.5 to 0.7 mm; and the inner hole wall of each fibrous membrane tube is provided with a 3 to 100 nm thick active polyamide layer produced by polyreaction. As the surface of the inner hole wall of each hollow fibrous membrane tube is connected with a functional separation layer through interface polymerization, the hollow fibrous reverse osmosis composite membrane has the characteristics of high contamination resistance, durable and stable flux, relatively simpler production process and low production cost, and can be used for the desalination of sea water, the preparation of ultra-pure water, and the treatment and the like of surface water and some special wastewater.
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Description

technical field

[0001] The invention relates to a hollow fiber reverse osmosis composite membrane and a preparation method thereof, belonging to the technical field of reverse osmosis treatment for water treatment. Background technique

[0002] Ultra-low pressure reverse osmosis is a membrane technology developed rapidly on the basis of nanofiltration in recent years. It is mainly used in seawater desalination and ultrapure water preparation. The ultra-low pressure reverse osmosis membrane improves the surface material and composition structure of the membrane surface, improves the performance of the membrane, and overcomes the shortcomings of reverse osmosis and nanofiltration. It can not only desalinate brackish water at a lower pressure, but also be used for Surface water and some special wastewater treatment, and large output, strong anti-pollution ability and anti-microbial impact ability, good mechanical strength, temperature resistance, stable performance.

[0003] T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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