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Hollow fiber film, and preparation and use thereof

A production method, fiber membrane technology, applied in the field of wastewater treatment

Active Publication Date: 2008-08-27
江苏碧水源环境科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polymers reported in the literature for hydrophilic modification include polyacrylonitrile (PAN), sulfonated polysulfone (SPS), cellulose acetate (CA), polymethyl methacrylate (PMMA), etc. Although the blending of polyphenylene ether has been reported in the literature, it is limited to the preparation of proton exchange flat membranes for fuel cells (US5989742 and 6103414, CN 96199414.2)

Method used

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  • Hollow fiber film, and preparation and use thereof
  • Hollow fiber film, and preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Dissolve 15 grams of polyvinylidene fluoride, 5 grams of sulfonated polyphenylene ether and 5 grams of polyethylene glycol in 40 grams, 15 grams and 10 grams of dimethylacetamide, respectively, at a dissolution temperature of 80 ° C, and then mix them Then, adopt the dry-wet spinning method, the dry spinning length is 6cm, the extrusion volume flow rate is 2mL / min, the spinning solution temperature is 60°C, and the core solution is 10% dimethylacetamide aqueous solution by weight. The coagulation bath uses deionized water, and the temperature of the coagulation bath is 50°C, so that the so-called blended hollow fiber membrane is obtained; its structure is a double-skin structure, and the pure water flux of the membrane is 120L / m 2 .h.bar, with an average pore size of 0.06 microns. The membrane is used for resource utilization of municipal sewage, and the effluent is reused as green reclaimed water. When the influent water quality is COD Cr 60mg / L, BOD 5 5mg / L, ammon...

Embodiment 2

[0068] Dissolve 13 g of polyvinylidene fluoride, 6 g of sulfonated polyphenylene ether, and 10 g of polyethylene glycol in 45 g, 16 g, and 10 g of dimethylacetamide, respectively, at a dissolution temperature of 80°C, and then mix them together , using the dry-wet spinning method, the dry spinning length is 6cm, the extrusion volume flow rate is 3mL / min, the spinning solution temperature is 80°C, the core solution is 20% dimethylacetamide aqueous solution by weight, and the coagulation bath Using deionized water, the temperature of the coagulation bath is 50°C, and the so-called blended hollow fiber membrane is obtained; its structure is a double-skin structure, and the pure water flux of the membrane is 160L / m 2 .h, with an average pore size of 0.08 microns. The membrane is used for domestic sewage treatment in office buildings, and the effluent is reused as regenerated water for cleaning and toilet flushing. When the influent water quality is COD Cr 58mg / L, BOD 5 7mg / L,...

Embodiment 3

[0070] Dissolve 17 g of polyvinylidene fluoride, 3 g of sulfonated polyphenylene ether, and 15 g of polyvinylpyrrolidone in 55 g, 15 g, and 5 g of dimethylacetamide, respectively, at a dissolution temperature of 80°C, and then mix them together , using the dry-wet spinning method, the dry spinning length is 4cm, the extrusion volume flow rate is 2.5mL / min, the temperature of the spinning solution is 80°C, and the core solution is a dimethylacetamide aqueous solution with a weight concentration of 15%. The bath uses deionized water, and the temperature of the coagulation bath is 45°C, that is, the so-called blended hollow fiber membrane is obtained; its structure is a double-skin structure, and the pure water flux of the membrane is 190L / m 2 .h, with an average pore size of 0.09 microns. The membrane is used for domestic sewage treatment in residential quarters, and the effluent is used as landscape water. When the influent water quality is COD Cr 72mg / L, BOD 5 9mg / L, ammo...

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Abstract

The invention relates to a hydrophilic polyvinylidene fluoride / sulphonated polyphenyl ether hollow fiber membrane, which has the intensity and the corrosion resistance of polyvinylidene fluoride and the hydrophilicity of sulphonated polyphenyl. The invention further relates to a method for manufacturing the membrane and the uses of the membrane in treatment of municipal sewage and industrial effluent and advanced treatment. The quality of the outgoing water reaches the water standard for scenery of the Effluent Standard of Pollutions for Town Sewage Treatment Plants (GB189.8-2002) and the water standard for scenery of the Regeneration and Utilization of Municipal Sewage (GB / T18920-2002).

Description

【Technical field】 [0001] The invention relates to the technical field of wastewater treatment, and more specifically, the invention relates to a hydrophilic polyvinylidene fluoride / sulfonated polyphenylene ether hollow fiber membrane, a production method and application of the membrane. 【Background technique】 [0002] The membrane separation process is replacing the traditional separation process, and is widely used in the separation of gases and liquids, especially for municipal sewage treatment, and also for wastewater treatment in chemical, food, medicine, electronics and other industrial fields. Polymer materials have become the main membrane materials because of their variety, easy processing and excellent performance. Polymer materials commonly used for membrane production include cellulose diacetate, cellulose triacetate, polyacrylonitrile, polysulfone, polyvinyl chloride, polyvinylidene fluoride, etc. Different application fields put forward different requirements f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/34B01D71/52B01D69/08
Inventor 梁辉李锁定陈亦力
Owner 江苏碧水源环境科技有限责任公司
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