Filter medium for removing polybrominated diphenyl ether from drinking water and preparation method thereof

A brominated diphenyl ether and filter medium technology, which is applied to the filter medium for removing polybrominated diphenyl ethers in drinking water and the field of preparation thereof, can solve the problem that the desired effect cannot be achieved, the reverse osmosis device is complicated, and water is wasted. resources and other issues, to achieve the effect of low cost, large surface area, and damage-free

Inactive Publication Date: 2011-01-05
QIDI ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the general treatment methods, such as activated carbon adsorption, electrolysis, precipitation, etc., can not achieve the desired effect in removing PBDEs; the reverse osmosis device is complicated, consumes electricity and wastes a lot of water resources

Method used

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  • Filter medium for removing polybrominated diphenyl ether from drinking water and preparation method thereof
  • Filter medium for removing polybrominated diphenyl ether from drinking water and preparation method thereof
  • Filter medium for removing polybrominated diphenyl ether from drinking water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Take medical activated carbon powder 120g, the particle diameter of described medical activated carbon is 74~104 microns;

[0035] (2) Take ultra-high molecular weight polyethylene powder 210g, described ultra-high molecular weight polyethylene is the M-II type product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary Second Factory, and its molecular weight is 2,500,000;

[0036] (3) Take 80g of food-grade ammonium bicarbonate, and the purity reaches more than 99.99%;

[0037] (4) Put the above four powders into a mechanical stirrer and stir for 10 minutes to mix evenly, fill the mixed powder into a tubular mold, press under a hydraulic pressure of 0.9MPa, and sinter at a temperature of 250° C. for 140 minutes; Natural cooling to 50°C and demoulding, tubular filter element with many fine holes;

[0038](5) Prepare a mixed solution with the following mass percentage components: 82% acetone, 9% cellulose acetate, 5% magnesium perchlorate, 4% triolein, place in a...

Embodiment 2

[0042] (1) Take by weighing medical active carbon powder 215g, the particle diameter of described medical active carbon is 74~104 microns;

[0043] (2) Take ultra-high molecular weight polyethylene powder 300g, said ultra-high molecular weight polyethylene is the M-II type product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary No. 2 Factory, and its molecular weight is 2.5 million;

[0044] (3) Take food grade ammonium bicarbonate 125g, and the purity reaches more than 99.99%;

[0045] (4) Put the above four powders into a mechanical stirrer and stir for 10 minutes to mix evenly, fill the mixed powder into a tubular mold, press under a hydraulic pressure of 0.8MPa, and sinter at a temperature of 280° C. for 130 minutes; Natural cooling to 60°C and demoulding, tubular filter element with many fine holes;

[0046] (5) Prepare a mixed solution with the following mass percentage components: 85% acetone, 11% cellulose acetate, 2% magnesium perchlorate, 2% triolein, place in...

Embodiment 3

[0050] (1) Take by weighing 220g of medical activated carbon powder, the particle diameter of described medical activated carbon is 74~104 microns;

[0051] (2) Take ultra-high molecular weight polyethylene powder 295g, described ultra-high molecular weight polyethylene is the M-II type product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary Second Factory, and its molecular weight is 2.5 million;

[0052] (3) Take food-grade ammonium bicarbonate 130g, and the purity reaches more than 99.99%;

[0053] (4) Put the above four powders into a mechanical stirrer and stir for 10 minutes to mix evenly, fill the mixed powder into a tubular mold, press under a hydraulic pressure of 0.6MPa, and sinter at a temperature of 220° C. for 150 minutes; Naturally cool to 40°C and then demould, a tubular filter element with many fine holes;

[0054] (5) Prepare a mixed solution with the following mass percentage components: 81% acetone, 10% cellulose acetate, 4% magnesium perchlorate, 5% ...

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Abstract

The invention discloses a method for preparing a filter medium for removing polybrominated diphenyl ether from drinking water, which comprises the following steps of: a) mixing raw materials containing active carbon powder, ultrahigh molecular weight polyethylene powder and pore forming agent in a weight ratio of 100-300: 200-400: 80-160; b) pressing the obtained mixture in a die, and sintering and cooling the mixture to obtain a filter medium for later use; c) dissolving cellulose acetate into acetone, adding magnesium perchlorate and triolein additives into the solution, and putting the mixed solution into a thermostatic oscillation box; d) soaking the filter medium for later use into the mixed solution, and then volatilizing the acetone therein; e) soaking the filter medium for later use into a thermostatic water bath of 28 to 32 DEG C; and f) drying the filter medium for later use. The prepared filter medium has the advantages of high rate of removing the PBDEs from the water, simple and convenient use and low cost, and is suitable for treating household terminal drinking water; and the rate of removing the PBDEs from the drinking water is over 95 percent.

Description

technical field [0001] The invention relates to a filter medium for removing polybrominated diphenyl ethers in drinking water and a preparation method thereof, a filter element, a water purification device and a water dispenser composed of the filter medium. Background technique [0002] Polybrominated diphenyl ethers (PBDEs) are widely used brominated flame retardants, which are widely used in electronic appliances, foam plastics, coatings, textiles, furniture, automobiles, aircrafts and other fields. The PBDEs used in industry are mainly pentabromo, hexabromo, octabromo and decabromodiphenyl ether. [0003] PBDEs are additive flame retardants, which are easy to seep out of polymers and accumulate in the environment to cause pollution. PBDEs will be released to the environment during the production and use of PBDEs, as well as the use and recycling of products containing PBDEs. Due to the extensive use and the persistence and bioaccumulation of residues in the environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01D29/00C02F1/00C02F1/28C02F101/36
Inventor 周奇迪栾云堂
Owner QIDI ELECTRIC GROUP
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