Filtering medium for removing perchlorate in water and preparation method thereof

A filter medium and perchlorate technology, applied in beverage preparation devices, chemical instruments and methods, applications, etc., can solve the problems of surface water and groundwater pollution, weak adsorption, etc., and achieve water quality improvement, low cost, and simple method Effect

Inactive Publication Date: 2009-11-04
QIDI ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Perchlorate is a non-volatile and highly water-soluble substance. Perchlorate has a high solubility in water, and its adsorption on most soils and minerals is weak, and this adsorption is often so weak that it can be ignored Therefore, once perchlorate enters the environmental medium, it will quickly migrate and diffuse with surface water and groundwater, thereby causing large-scale surface water and groundwater pollution.

Method used

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  • Filtering medium for removing perchlorate in water and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] (1) Take ultra-high molecular weight polyethylene powder 220g, described ultra-high molecular weight polyethylene is the M-III type product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary No. 2 Factory, and its molecular weight is 3.5 million;

[0034] (2) Take medical active carbon powder 170g, the particle diameter of described medical active carbon is 38-250 micron;

[0035] (3) Take by weighing calcium Y-type molecular sieve 80g;

[0036] (4) Take 60 grams of food-grade ammonium bicarbonate, and the purity reaches more than 99.99%;

[0037] (5) Put the above four powders into a mechanical stirrer and stir for 10 minutes to mix evenly;

[0038] (6) Fill into a tubular mold with a diameter of 50 mm, press under a hydraulic pressure of 0.7 MPa, and sinter at a temperature of 240° C. for 180 minutes.

[0039] (7) Naturally cool to 50°C and then release the mold, that is, a tubular filter element with many fine pores.

Embodiment 2

[0041] (1) Take ultra-high molecular weight polyethylene powder 220g, described ultra-high molecular weight polyethylene is the M-III type product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary No. 2 Factory, and its molecular weight is 3.5 million;

[0042] (2) Take by weighing medical active carbon powder 250g, the particle diameter of described medical active carbon is 38-250 micron;

[0043] (3) Take by weighing calcium Y-type molecular sieve 60g;

[0044] (4) Take 80 grams of food-grade ammonium bicarbonate, and the purity reaches more than 99.99%;

[0045] All the other steps are the same as in Example 1.

Embodiment 3

[0047] (1) Take ultra-high molecular weight polyethylene powder 150g, described 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;

[0048] (2) Take medical active carbon powder 200g, the particle diameter of described medical active carbon is 89-178 micron;

[0049] (3) Take by weighing calcium Y-type molecular sieve 100g;

[0050] (4) Take 90 grams of azodicarbonamide, and its purity reaches analytical purity;

[0051] All the other steps are the same as in Example 1.

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Abstract

The invention discloses a preparation method of a filtering medium for removing perchlorate in water, which comprises the following steps: (a) mixing raw materials containing ultrahigh molecular weight polyethylene, activated carbon, zeolite powder and gas generation agent, wherein the weight ratio of the ultrahigh molecular weight polyethylene, the activated carbon, the zeolite Powder and the gas generation agent is 100-300:150-300:50-100:50-100; and (b) pressing, sintering and cooling the mixture obtained in the step (a). The filtering medium prepared by the method and used for removing perchlorate in water has over 95 percent of removal and has simple method, low cost and quick effect.

Description

technical field [0001] The invention relates to a filter medium for removing perchlorate in water, a preparation method thereof, a filter element using the filter medium, a water purification device and a water dispenser. Background technique [0002] With the improvement of people's emphasis on health, the quality of drinking water has become a problem that people pay close attention to. If drinking water contains perchlorate (ClO 4 - ), there will be certain harm to the human body. [0003] Perchlorate is widely used in rocket propellants, fireworks and firecrackers manufacturing, munitions industry, automobile air bags, highway safety flash boards and other fields, and is also used as an additive in lubricating oil, fabric fixatives, electroplating solutions, Production of leather tanning agents, rubber products, dye coatings, smelted aluminum and magnesium batteries, etc. In addition, the chemical fertilizers used in agricultural production that use Chilean saltpeter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/26C02F1/28A47J31/00
Inventor 周奇迪
Owner QIDI ELECTRIC GROUP
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