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Method for deep treatment of antibiotics in drinking water based on multiwalled carbon nanotube modified ultrafiltration membrane

A technology of multi-wall carbon nanotubes and advanced treatment, which is applied in the field of drinking water treatment, can solve problems such as inability to remove, and achieve the effects of improving anti-pollution performance, increasing surface activity, and reducing scaling

Inactive Publication Date: 2017-01-25
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Antibiotics are small molecular substances, which cannot be removed by general filtration.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: a kind of method based on multi-wall carbon nanotube modified ultrafiltration membrane advanced treatment antibiotic in drinking water, comprises the following steps:

[0027] Step 1. Preliminary treatment of water: remove suspended solids, perform ozone pre-oxidation treatment, and the dosage of ozone is not less than 0.5g / m 3 , and then adsorbed by activated carbon to obtain pretreated water;

[0028] Step 2, the pretreated water is filtered through the multi-wall carbon nanotube modified ultrafiltration membrane: the pretreated water is ultrafiltered with the membrane equipment system composed of the multi-wall carbon nanotube modified ultrafiltration membrane prepared in step 1, and the control pressure is 200Kpa , filter out the macromolecular components, and obtain the permeate containing only antibiotic small molecules;

[0029] Step 3, remove antibiotics by reverse osmosis: put the permeate containing antibiotic small molecules in reverse osmosis ...

Embodiment 2

[0035] Embodiment 2: a kind of method based on multi-wall carbon nanotube modified ultrafiltration membrane advanced treatment antibiotic in drinking water, comprises the following steps:

[0036] Step 1. Preliminary treatment of water: remove suspended solids, perform ozone pre-oxidation treatment, and the dosage of ozone is not less than 1.75g / m 3 , and then adsorbed by activated carbon to obtain pretreated water;

[0037] Step 2, the pretreated water is filtered through the multi-wall carbon nanotube modified ultrafiltration membrane: the pretreated water is ultrafiltered with the membrane equipment system composed of the multi-wall carbon nanotube modified ultrafiltration membrane prepared in step 1, and the control pressure is 500Kpa , filter out the macromolecular components, and obtain the permeate containing only antibiotic small molecules;

[0038] Step 3, remove antibiotics by reverse osmosis: put the permeate containing antibiotic small molecules in reverse osmosis...

Embodiment 3

[0044] Embodiment 3: a kind of method based on multi-walled carbon nanotube modified ultrafiltration membrane advanced treatment antibiotic in drinking water, comprises the following steps:

[0045] Step 1, preliminary treatment of water: remove suspended solids, perform ozone pre-oxidation treatment, and the dosage of ozone is not less than 3g / m 3 , and then adsorbed by activated carbon to obtain pretreated water;

[0046] Step 2, the pretreated water is filtered through the multi-wall carbon nanotube modified ultrafiltration membrane: the pretreated water is ultrafiltered with the membrane equipment system composed of the multi-wall carbon nanotube modified ultrafiltration membrane prepared in step 1, and the control pressure is 800Kpa , filter out the macromolecular components, and obtain the permeate containing only antibiotic small molecules;

[0047] Step 3, remove antibiotics by reverse osmosis: put the permeate containing antibiotic small molecules in reverse osmosis ...

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PUM

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Abstract

The invention discloses a method for deep treatment of antibiotics in drinking water based on a multiwalled carbon nanotube modified ultrafiltration membrane. The method comprises the following steps: step 1, performing water primary treatment to obtain pretreated water; step 2, filtering the pretreated water with a multiwalled carbon nanotube modified ultrafiltration membrane; and step 3, removing antibiotics with a reverse osmosis process, so as to obtain drinking water meeting standard. The preparation method of the multiwalled carbon nanotube modified ultrafiltration membrane comprises the following steps: firstly preparing a functionalized multiwalled carbon nanotube, then dissolving a membrane base material solvent, adding a surfactant, a pore-foaming agent and multiwalled carbon nanotubes, preparing an ultrafiltration membrane with an electrospinning technique, and adding a polyamide blocked layer and an antifouling layer. The high-flux ultrafiltration membrane prepared according to the invention can easily remove antibiotics micromolecule substances in water, and by applying the method disclosed by the invention to treat the drinking water, the treatment process is simple, and the treatment effect is good, the cost is low, and the method is suitable for popularization and implementation.

Description

technical field [0001] The invention relates to the technical field of drinking water treatment, in particular to a method for advanced treatment of antibiotics in drinking water based on a multi-walled carbon nanotube modified ultrafiltration membrane. Background technique [0002] With the advancement of industrialization, water environment pollution and water resource shortage have become prominent problems worldwide, seriously restricting the sustainable development of social economy. Drinking water is a basic need for human survival and an important medium for spreading diseases. With the continuous improvement of people's living standards, people's requirements for the quality of drinking water are also getting higher and higher. Paying attention to water quality, drinking water and health is to meet the development needs of the times. [0003] In my country, with the continuous development of economy and rapid urbanization, the discharge of domestic sewage has incre...

Claims

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Application Information

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IPC IPC(8): C02F1/44C02F9/04B01D67/00C02F103/34
CPCC02F1/444B01D67/0079B01D2323/39C02F1/283C02F1/441C02F1/78C02F5/10C02F5/14C02F9/00C02F2103/343
Inventor 黄荣新姜琦魏东洋刘钢李屹骆其金李鑫华
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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