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Filter medium for removing arsenic from drinking water and preparation method thereof

A filter medium and drinking water technology, applied in the field of water treatment, can solve problems such as secondary pollution, discounted amount of arsenic removal, and reduced effectiveness, and achieve strong adsorption capacity, easy to use, and high-efficiency removal

Inactive Publication Date: 2012-06-13
QIDI ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these traditional arsenic removal methods or a single arsenic removal agent are rarely used in high-arsenic disease areas, mainly because the actual effect of the single arsenic removal method in the laboratory or in the field is reduced, or The use method is cumbersome, or the price is high, or it causes secondary pollution and other problems
In addition, the drinking water in local arsenicosis disease areas is mostly shallow groundwater, which contains more organic matter such as humic acid and fulvic acid or other salts; even deep groundwater is mostly lacustrine sedimentary water rich in organic matter. , Salt will seriously interfere with the removal effect of the arsenic removal agent, greatly reducing the amount of arsenic removal
[0005] Due to the unsatisfactory effect of removing arsenic in drinking water by the methods in the prior art, it is necessary to provide a filter medium with a higher removal rate for arsenic in drinking water

Method used

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  • Filter medium for removing arsenic from drinking water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Take ultra-high molecular weight polyethylene powder 275g, this ultra-high molecular weight polyethylene is the M-II type product of the Second Auxiliary Factory of Beijing Dongfang Petrochemical Co., Ltd., and the weight-average molecular weight is 2,500,000;

[0028] (2) Weigh 75g of medical activated carbon powder, the particle size of the medical activated carbon powder is 94μm~115μm, and the specific surface area is greater than 1400m 2 / g;

[0029] (3) Weighing 45g of goethite powder, the particle size of the goethite powder is 65 μm to 85 μm;

[0030] (4) Weighing 50g of pyrolusite powder, the particle diameter of the pyrolusite powder is 65 μm~85 μm;

[0031] (5) Weigh 80 g of red mud powder, the particle size of which is 62 μm to 85 μm;

[0032] (6) Take food-grade ammonium bicarbonate 95g, the purity of described food-grade ammonium bicarbonate is greater than 99.99%;

[0033] (7) Put the above six powders into a mechanical stirrer and stir for 10 minut...

Embodiment 2

[0037] (1) Take ultra-high molecular weight polyethylene powder 290g, this ultra-high molecular weight polyethylene is the M-II type product of the Second Auxiliary Factory of Beijing Dongfang Petrochemical Co., Ltd., and the weight average molecular weight is 2.5 million;

[0038] (2) Weigh 75g of medical activated carbon powder, the particle size of the medical activated carbon powder is 94μm~115μm microns, and the specific surface area is greater than 1400m 2 / g;

[0039] (3) Weighing 45g of goethite powder, the particle size of the goethite powder is 65 μm to 85 μm;

[0040] (4) Weighing 40g of pyrolusite powder, the particle diameter of the pyrolusite powder is 65 μm~85 μm;

[0041] (5) Weigh 75 g of red mud powder, the particle size of which is 62 μm to 85 μm;

[0042] (6) Take food-grade ammonium bicarbonate 95g, the purity of described food-grade ammonium bicarbonate is greater than 99.99%;

[0043] (7) Put the above six powders into a mechanical stirrer and stir fo...

Embodiment 3

[0047] (1) Take ultra-high molecular weight polyethylene powder 260g, this ultra-high molecular weight polyethylene is the M-II type product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary No. 2 Factory, and the weight-average molecular weight is 2,500,000;

[0048] (2) Weigh 90g of medical activated carbon powder, the particle size of the medical activated carbon powder is 94μm~115μm, and the specific surface area is greater than 1400m 2 / g;

[0049] (3) Weigh 40 g of goethite powder, the particle size of which is 65 μm to 85 μm;

[0050] (4) Weighing 50g of pyrolusite powder, the particle diameter of the pyrolusite powder is 65 μm~85 μm;

[0051] (5) Weigh 75 g of red mud powder, the particle size of which is 62 μm to 85 μm;

[0052] (6) Take by weighing food-grade ammonium bicarbonate 105g, the purity of described food-grade ammonium bicarbonate is greater than 99.99%;

[0053] (7) Put the above six powders into a mechanical stirrer and stir for 10 minutes to mix e...

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Abstract

The invention discloses a method for preparing a filter medium for removing arsenic from drinking water, which comprises the following steps of: a) mixing raw materials, namely ultra-high molecular weight polyethylene powder, powdered activated carbon, ferromanganese ore powder, red mud powder and a foaming agent in a weight ratio of 150-300:50-200:50-200:50-200:50-150; and b) pressing the mixture obtained by the step a) in a mold, sintering and cooling. Compared with the prior art, the prepared filter medium can efficiently remove the arsenic from the drinking water, is simple and convenientto use and is suitable for treating drinking water at a home terminal; and detection results show that the filter medium prepared by the method has the removal rate of 95 to 99 percent for the arsenic in the drinking water.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a filter medium for removing arsenic in drinking water and a preparation method thereof. Background technique [0002] Arsenic pollution in drinking water has occurred in many countries and regions in the world, such as India, Bangladesh, the United States, the United Kingdom, Canada, Australia, Japan, and Russia have reported poisoning caused by arsenic pollution in drinking water. The U.S. Centers for Disease Control and Prevention and the National Defense Agency for Cancer Research have identified arsenic as a first-class carcinogen, and the World Health Organization has calibrated the content of arsenic in drinking water to be no more than 0.01mg / L. [0003] Inner Mongolia, Xinjiang, Shanxi, Hunan, Yunnan, Guizhou, Taiwan and many other provinces and regions in China have found areas with high arsenic in drinking water. If residents drink water with arsenic exceeding the stand...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14B01J20/20C02F1/28C02F1/58A47J31/00
Inventor 周奇迪
Owner QIDI ELECTRIC GROUP
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