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Chemical sewage treatment process based on PSF-g-CS polymer microfiltration membrane

A sewage treatment method and polymer technology, applied in biological water/sewage treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the waste of valuable materials, short membrane service life, and late start of membrane technology and other problems, to achieve the effect of long service life, improved hydrophilic performance, and improved anti-ultraviolet performance

Active Publication Date: 2021-07-09
河南鑫安利职业健康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biological treatment is the main method of chemical sewage treatment in my country at present. It is mainly realized by the degradation and transformation of organic matter in sewage by microorganisms. However, some valuable substances in sewage will be wasted in this process. In order to Effective recovery of valuable resources in sewage, so that the resources in sewage can be recycled and reused, some new sewage treatment technologies need to be developed
[0004] The development of membrane technology can solve the above problems very well. Its advantages of low energy consumption, high efficiency and no pollution make it widely developed and utilized. Serious pollution problems, short membrane life and low efficiency when used in conjunction with other sewage treatment methods

Method used

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  • Chemical sewage treatment process based on PSF-g-CS polymer microfiltration membrane
  • Chemical sewage treatment process based on PSF-g-CS polymer microfiltration membrane
  • Chemical sewage treatment process based on PSF-g-CS polymer microfiltration membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A preparation method of PSF-g-CS polymer microfiltration membrane, comprising the following steps:

[0045] S1. Chloromethylation of polysulfone: Dissolve polysulfone (Mw35000) in dichloromethane, stir to dissolve completely, then add paraformaldehyde and trimethylchlorosilane, polysulfone and paraformaldehyde, trimethyl chloride The mass volume ratio of silane and tin tetrachloride is 40g:30g:90mL:2mL, stir evenly and slowly add tin tetrachloride solution under stirring state, react at 35°C for 60h to obtain chloromethylated polysulfone;

[0046] S2. Preparation of hydroxycycloketene polysulfone: Dissolve 1,3-cyclopentadione in 1M aqueous sodium hydroxide solution, then add chloromethylated polysulfone to the mixture, 1,3-cyclopentadione The mass ratio of ketone to chloromethylated polysulfone is 3:10, and the mixture is heated to 75°C for 8 hours to obtain hydroxycycloketene polysulfone;

[0047] S3. Alkylation reaction of hydroxycycloketene polysulfone: dissolve hyd...

Embodiment 2

[0052] A preparation method of PSF-g-CS polymer microfiltration membrane, comprising the following steps:

[0053] S1. Chloromethylation of polysulfone: Dissolve polysulfone (Mw35000) in dichloromethane, stir to dissolve completely, then add paraformaldehyde and trimethylchlorosilane, polysulfone and paraformaldehyde, trimethyl chloride The mass volume ratio of silane and tin tetrachloride is 45g:35g:95mL:2mL, stir evenly and slowly add tin tetrachloride solution under stirring state, react at 35°C for 60h to obtain chloromethylated polysulfone;

[0054] S2. Preparation of hydroxycycloketene polysulfone: Dissolve 5-methylcyclohexane-1,3-dione in 1M aqueous sodium hydroxide solution, then add chloromethylated polysulfone to the mixture, 5 - The mass ratio of methylcyclohexane-1,3-dione to chloromethylated polysulfone is 2:5, and the mixture is heated to 80°C for 9 hours to obtain hydroxycycloketene polysulfone;

[0055] S3. Alkylation reaction of hydroxycycloketene polysulfone...

Embodiment 3

[0060] A preparation method of PSF-g-CS polymer microfiltration membrane, comprising the following steps:

[0061] S1. Chloromethylation of polysulfone: Dissolve polysulfone (Mw35000) in dichloromethane, stir to dissolve completely, then add paraformaldehyde and trimethylchlorosilane, polysulfone and paraformaldehyde, trimethyl chloride The mass volume ratio of silane and tin tetrachloride is 50g:40g:100mL:3mL, stir evenly and slowly add tin tetrachloride solution under stirring state, react at 35°C for 70h to obtain chloromethylated polysulfone;

[0062] S2. Preparation of hydroxycycloketene polysulfone: Dissolve 5-(2-thienyl)cyclohexane-1,3-dione in 1M aqueous sodium hydroxide solution, then add chloromethylated polysulfone to mix In the liquid, the mass ratio of 5-(2-thienyl)cyclohexane-1,3-dione to chloromethylated polysulfone is 1:2, and the mixture is heated to 90°C for 10 hours to obtain hydroxycycloketene polysulfone One of sulfone; phenyl) cyclohexane-1,3-dione;

[...

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Abstract

The invention provides a PSF-g-CS polymer microfiltration membrane. Polysulfone is used as a raw material, chloromethylated polysulfone, hydroxyl cycloenone polysulfone, hydroxyl cycloenone polysulfone alkylate and a PSF-g-CS polymer are sequentially prepared, and finally the PSF-g-CS polymer microfiltration membrane is prepared through electrostatic spinning. The microfiltration membrane is good in hydrophilic performance, high in membrane flux and strong in pollution resistance, the synthesis process is simple, and the industrial production is easy. The invention also provides a sewage treatment method based on the PSF-g-CS polymer microfiltration membrane, which combines a membrane technology, a flocculent precipitation technology and a microbial technology. The method has high sewage treatment efficiency, and the effluent completely reaches the discharge standard.

Description

technical field [0001] The invention belongs to the technical field of chemical sewage treatment, and in particular relates to a sewage treatment process based on PSF-g-CS polymer microfiltration membrane. Background technique [0002] With the continuous development of social economy, the value of industry in production is also increasing. However, with the development of industry, the problem of water pollution is becoming more and more serious. Among them, the treatment of chemical sewage has received widespread attention from the society. Chemical sewage not only has Toxicity and irritation, high concentration of organic matter, unstable pH, more nutrient substances, and it is quite difficult to restore the polluted waters to the original state of the waters. [0003] The components of pollutants in chemical wastewater are complex, and when it is treated, it is often combined with multiple methods to achieve the best treatment effect. Now the sewage treatment of chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14B01D61/14B01D71/68C02F1/44C02F1/52C02F3/10C02F3/28C02F3/30C02F101/30
CPCC02F9/00B01D61/147B01D71/68C02F1/444C02F1/52C02F3/28C02F3/30C02F3/102C02F3/105C02F2209/10C02F2101/30B01D2323/39Y02W10/10
Inventor 秦洪涛何磊曹军艳赵荣宇李天文张海和燕飞
Owner 河南鑫安利职业健康科技有限公司
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