Filter medium for removing oxytetracycline in drinking water and preparation method thereof

A filter medium, oxytetracycline technology, applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc., can solve the problems of poor adsorption effect than activated carbon, cumbersome process, inconvenient use, etc., to achieve good adsorption effect, good Adsorption capacity, easy-to-use effect

Inactive Publication Date: 2011-05-18
QIDI ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the prior art, a variety of water treatment methods have been disclosed, but the pollution removal effect of antibiotics such as oxytetracycline cannot meet the ideal requirements
For example, conventional coagulation, sedimentation, and filtration water treatment methods have little effect on removing oxytetracycline in water; activated carbon adsorption technology has low adsorption capacity and adsorption efficiency; montmorillonite, diatomite, sepiolite, retort The adsorption effect of these non-metallic minerals such as stone is not as good as that of activated carbon; biodegradation requires the cultivation of bacteria, and the filming of the biofilm packing tower is long, the process is cumbersome and inconvenient to use, and it is not suitable for household terminal water treatment.
For the resin adsorption method and extraction method, the use conditions are acidic, and the operation process is more troublesome; the iron-carbon micro-electrolysis-ferrous reduction oxidation method, the device is more complicated, only suitable for water with a low pH value, and sometimes it is necessary to add a colored catalytic oxidant ; Electrochemical oxidation method, the reaction device is a fixed bed electrochemical multiple catalytic reactor, complex structure, inconvenient to use; advanced oxidation technology O 3 / UV,O 3 / H 2 o 2 , O 3 / TiO 2 etc., the equipment is more complicated and the cost is high
[0007] Considering that the filtration method in the prior art has a poor removal effect when removing oxytetracycline in drinking water, it is necessary to provide a filter medium with a higher removal rate for oxytetracycline in drinking water

Method used

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  • Filter medium for removing oxytetracycline in drinking water and preparation method thereof
  • Filter medium for removing oxytetracycline in drinking water and preparation method thereof

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preparation example Construction

[0024] A kind of preparation method embodiment that is used to remove the filter medium of oxytetracycline in reference water provided by the present invention comprises:

[0025] a) Mixing raw materials including ultra-high molecular weight polyethylene powder, mesoporous molecular sieve powder, activated carbon powder and pore-forming agent, the specific surface area of ​​the mesoporous molecular sieve powder is greater than 1200m 2 / g, the pore diameter is 2nm~20nm, and the pore volume is 0.5cm 3 / g~1.5cm 3 / g, the weight ratio of ultra-high molecular weight polyethylene powder, mesoporous molecular sieve powder: activated carbon powder, pore forming agent is: 100~300: 100~250: 80~110: 50~110;

[0026] b) pressing, sintering and cooling the mixture obtained in step a) in a mould.

[0027] According to the present invention, ultra-high molecular weight polyethylene (UHMWPE) is used as one of the raw materials for preparing filter media. Ultra-high molecular weight polyethy...

Embodiment 1

[0055] Get 1000g of tamarind gum powder, add 5000ml of purified water, mix and stir to obtain the first mixture;

[0056] Add 1000 g of strongly acidic cation exchange resin to the first mixture and mix to obtain the second mixture;

[0057] The second mixture is heated to boiling, solid-liquid separation, and the obtained solid particles are added to a calcium chloride aqueous solution with a mass concentration of 35% and mixed uniformly to obtain a third mixture. The weight ratio of calcium chloride to tamarind rubber powder 1:2;

[0058] The third mixture was heated to 55° C., filtered, and dried to obtain a tamarind gum composite material.

Embodiment 2

[0060] Get 1000g of tamarind gum powder, add 4000ml of purified water and mix and stir to obtain the first mixture;

[0061] In the first mixture, 1200 g of weakly acidic cation exchange resin was added and mixed to obtain the second mixture;

[0062] The second mixture is heated to boiling, solid-liquid separation, and the obtained solid particles are added to a calcium chloride aqueous solution with a mass concentration of 30% and mixed uniformly to obtain a third mixture. The weight ratio of calcium chloride to tamarind rubber powder 1:3;

[0063] The third mixture was heated to 50° C., filtered, and dried to obtain a tamarind gum composite material.

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Abstract

The invention discloses a preparation method of a filter medium for removing oxytetracycline in drinking water. The preparation method is characterized by comprising the following steps of: (a) mixing raw materials including high molecular weight polyethylene powder, mesoporous molecular sieve powder, activated carbon power and a gas generation agent, wherein the mesoporous molecular sieve powder has specific surface area of 1200m<2>/g, the aperture of 2-20nm and the pore volume of 0.5-1.5cm<3>/g, and the weight ratio of the high molecular weight polyethylene powder to the mesoporous molecular sieve powder to the activated carbon power to the gas generation agent is (100-300):(100-250):(80-110):(50-110); and (b) pressing the obtained mixture in the die, sintering and cooling. In the raw materials, the high molecular weight polyethylene powder not only can be used as a framework of the filter medium, but also has favorable adsorption capability; and the mesoporous molecular sieve powder has larger specific area, aperture and pore volume and favorable adsorption effect for the oxytetracycline in water. By detecting, the removing rate of the filter medium for the oxytetracycline in water reaches over 90 percent.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a filter medium for removing oxytetracycline in drinking water and a preparation method thereof. Background technique [0002] Oxytetracycline, also known as oxytetracycline, belongs to tetracycline broad-spectrum antibiotics, has antibacterial activity to gonorrhoeae and meningococci, and its chemical structure is as shown in formula (I): [0003] [0004] In addition to being widely used in clinical control of infectious diseases, oxytetracycline is also widely used in the prevention of livestock, poultry, breeding and plant diseases and insect pests, and is also added to feed as auxin. In fact, animals in the animal husbandry industry excrete a large amount of oxytetracycline every day, and many pharmaceutical factories also discharge a large amount of oxytetracycline because the wastewater treatment cannot meet the standards. Oxytetracycline entering the environment will ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01J20/28C02F1/28C02F1/58
Inventor 周奇迪栾云堂
Owner QIDI ELECTRIC GROUP
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