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Filter medium for removing 17alpha-ethinyl estraglycol in drinking water and preparation method thereof

A filter medium and ethynyl-based technology, applied in the field of filter medium and its preparation for removing 17α-ethynyl estradiol in drinking water, can solve problems such as blockage, high treatment cost, discounted removal effect, etc., and achieve easy to use, Easy to use and high removal rate

Inactive Publication Date: 2015-07-08
北京海德能水处理设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional sewage and tap water treatment methods cannot effectively remove exogenous 17α-ethinyl estradiol, and physical adsorption method has many uncertainties and incomplete treatment; membrane separation method is prone to swelling, clogging, high price and interception The dirt under the environment is not easy to treat and cause secondary pollution; advanced oxidation technology, especially plasma technology, is too costly and complex in structure; UV / hydrogen peroxide method is effective for removing 17α-ethynylestradiol, but chlorine The presence of ions, bicarbonate ions, and nitrate ions will greatly reduce the removal effect

Method used

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  • Filter medium for removing 17alpha-ethinyl estraglycol in drinking water and preparation method thereof
  • Filter medium for removing 17alpha-ethinyl estraglycol in drinking water and preparation method thereof

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preparation example Construction

[0023] The embodiment of the present invention discloses a preparation method of a filter medium for removing 17α-ethynyl estradiol in drinking water, comprising the following steps:

[0024] (A) mixing ultra-high molecular weight polyethylene powder, woody medical activated carbon powder, NaY molecular sieve, modified bentonite, mesoporous molecular sieve and pore forming agent to obtain a mixture;

[0025] The weight ratio of the ultra-high molecular weight polyethylene powder, woody medical activated carbon powder, NaY molecular sieve, modified bentonite, mesoporous molecular sieve and pore forming agent is (35-45): (25-35): (5-15 ): (15~25): (5~15): (5~15);

[0026] The preparation method of the modified bentonite is: adding water to the natural bentonite and stirring it into a slurry, adding Al 3+ or Fe 3+ cationic soluble salt, the amount of soluble salt added is 1-4wt% of the natural bentonite in the slurry;

[0027] (B) pressing the mixture obtained in step (A) in a...

Embodiment 1

[0047] (1) Weigh 350 g of ultra-high molecular weight polyethylene powder. The ultra-high molecular weight polyethylene is the M-II product of the Second Auxiliary Factory of Beijing Dongfang Petrochemical Co., Ltd., and its molecular weight is 2.5 million;

[0048] (2) Weigh 250 g of woody medical activated carbon powder, the particle size of the woody medical activated carbon is 74 μm to 80 μm;

[0049] (3) Weigh 50g of NaY-type molecular sieve, which is produced by Qingdao Huizhi Chemical Technology Co., Ltd. with a pore size of 1.5-1.8nm;

[0050] (4) Weigh 50 g of mesoporous molecular sieve, which is a product with a pore size of 10-40 nm provided by Pioneer Nano Co., Ltd.;

[0051] (5) Stir the natural bentonite with water to form a slurry, add ferric chloride to the slurry, the amount of ferric chloride added is 1wt% of the weight of the natural bentonite, stir the slurry for 10 hours, then filter the slurry, Dry and pulverize to obtain modified bentonite with a partic...

Embodiment 2

[0058] (1) Weigh 370 g of ultra-high molecular weight polyethylene powder. The ultra-high molecular weight polyethylene is the M-II product of the Second Auxiliary Factory of Beijing Dongfang Petrochemical Co., Ltd., and its molecular weight is 3 million;

[0059] (2) Weigh 270 g of woody medical activated carbon powder, the particle size of the woody medical activated carbon is 78 μm to 80 μm;

[0060] (3) Weigh 70g of NaY-type molecular sieve, which is produced by Qingdao Huizhi Chemical Technology Co., Ltd. with a pore size of 1.5-1.8nm;

[0061] (4) Weigh 70g of mesoporous molecular sieve, which is a product with a pore size of 10-40nm provided by Pioneer Nano Co., Ltd.;

[0062] (5) Stir the natural bentonite with water to form a slurry, add aluminum chloride to the slurry, the amount of aluminum chloride added is 2wt% of the weight of the natural bentonite, stir the slurry for 10 hours, then filter the slurry, dry, Pulverize to obtain modified bentonite with a particle ...

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Abstract

The invention provides a preparation method of a filter medium for removing 17alpha-ethinyl estraglycol in drinking water. The preparation method comprises the steps of mixing ultra-high molecular weight polyethylene powder, wood medical activated carbon powder, an NaY molecular sieve, modified bentonite, a mesoporous molecular sieve and a pore-forming agent in a weight ratio of (35-45):(25-35):(5-15):(15-25):(5-15):(5-15), pressing the mixture in a mould, and sintering and cooling the product, thus obtaining the filter medium, wherein the sintering temperature is 230-240 DEG C and the sintering time is 90-120 minutes. The preparation method has the beneficial effects that after the raw materials are sintered, net structures crosslinked with each other are formed, have addition synergy and can effectively adsorb 17alpha-ethinyl estraglycol; the 17alpha-ethinyl estraglycol removal rate of the filter medium is 95-99%, and the filter medium is simple and convenient to use and low in cost; and the filter elements prepared from the filter medium are convenient to use, dispense with subsequent treatment and are suitable for treating drinking water in home terminals.

Description

technical field [0001] The invention relates to the field of filter media, in particular to a filter media for removing 17α-ethinyl estradiol in drinking water and a preparation method thereof, a filter element, a water purification device and a water dispenser made of the filter media. Background technique [0002] 17α-Ethynylestradiol (EF2) is a synthetic estrogen, fat-soluble, chemically stable, difficult to biodegrade, and can still cause harm to organisms when the mass concentration is as low as ng / L, such as It has a strong interference with fetal gender differences, changes the metabolism of fat and glucose, and causes biological effects such as cancer of reproductive organs. 17α-Ethinyl estradiol is often used as an oral contraceptive or as a chemical intermediate for making epoxy resin, polycarbonate, flame retardant, etc. [0003] Investigations and studies have shown that 17α-ethinyl estradiol is commonly found in rivers, oceans and their sediments, as well as in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30B01D39/14C02F1/28
Inventor 杭宗梁
Owner 北京海德能水处理设备制造有限公司