Filter medium for removing giardia and cryptosporidium in water and preparation method thereof

A filter medium and a technology for Cryptosporidium, which are applied in the field of filter media for removing Giardia and Cryptosporidium in water and their preparation fields, can solve the problems of high price, complicated equipment, power consumption and time consumption, etc., and improve water quality. , The method is simple, the effect is quick

Inactive Publication Date: 2010-01-20
周奇迪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The individuals of Giardia and Cryptosporidium are very small, and it is difficult to capture and remove them by general filtering methods
Using ozone, ultraviolet light, biofilm, reverse osmosis and other technical methods, although the removal effect of Giardia trichomonas and Cryptosporidium is better, but the equipment is too complicated, expensive, power-consuming and time-consuming, and it is very troublesome to use

Method used

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  • Filter medium for removing giardia and cryptosporidium in water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Weigh 190g of ultra-high molecular weight polyethylene powder, said ultra-high molecular weight polyethylene is an M-II product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary Second Factory, and its molecular weight is 2.5 million;

[0032] (2) Weigh 70g of medical activated carbon powder, the particle size of the medical activated carbon is 38-250 microns;

[0033] (3) Weigh 160g of diatomaceous earth powder, the particle size of the diatomaceous earth powder is 11-38 microns;

[0034] (4) Weigh 60 grams of food grade ammonium bicarbonate, with a purity of over 99.99%;

[0035] (5) Put the above four powders into a mechanical mixer and stir for 10 minutes to mix evenly;

[0036] (6) Fill it into a tubular mold, press it under a hydraulic pressure of 0.7 MPa, and sinter it at 240°C for 150 minutes.

[0037] (7) Naturally cool to 50°C and demould, that is, a tubular filter element with much finer pores.

[0038] The prepared filter element has a diameter of 50 mm and a le...

Embodiment 2

[0040] (1) Weigh 150g of ultra-high molecular weight polyethylene powder, said ultra-high molecular weight polyethylene is a M-III type product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary Second Factory, and its molecular weight is 3.5 million;

[0041] (2) Weigh 100g of medical activated carbon powder, the particle size of the medical activated carbon is 78-250 microns;

[0042] (3) Weigh 160g of diatomaceous earth powder, the particle size of the diatomaceous earth powder is 15-74 microns;

[0043] (4) Weigh 50 grams of food-grade ammonium bicarbonate, with a purity of over 99.99%;

[0044] (5) Put the above four powders in a mechanical mixer and stir for 9 minutes to mix evenly;

[0045] (6) Fill it into a tubular mold, press it under a hydraulic pressure of 0.5 MPa, and sinter it at 220°C for 100 minutes.

[0046] (7) It is naturally cooled to 25°C and then demolded, that is, a tubular filter element with much finer pores.

[0047] The prepared filter element has a diameter ...

Embodiment 3

[0049] (1) Weigh 280g of ultra-high molecular weight polyethylene powder. The ultra-high molecular weight polyethylene is an M-II type product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary Second Factory, and its molecular weight is 2.5 million;

[0050] (2) Weigh 50g of medical activated carbon powder, the particle size of the medical activated carbon is 89-250 microns;

[0051] (3) Weigh 300g of diatomaceous earth powder, the particle size of the diatomaceous earth powder is 11-38 microns;

[0052] (4) Weigh 70 grams of azodicarbonamide, with a purity of over 99.99%;

[0053] (5) Put the above four powders into a mechanical stirrer and stir for 12 minutes to mix evenly;

[0054] (6) Fill it into a tubular mold, press it under a hydraulic pressure of 0.9MPa, and sinter it at a temperature of 235°C for 130 minutes.

[0055] (7) It is naturally cooled to 25°C and then demolded, that is, a tubular filter element with much finer pores.

[0056] The prepared filter element has a diame...

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Abstract

The invention discloses a method for preparing a filter medium used for removing giardia and cryptosporidium in water. The method comprises the following steps: a) mixing raw materials containing ultra-high molecular weight polyethylene, activated carbon and diatomite in powder, wherein the weight ratio of the ultra-high molecular weight polyethylene, the activated carbon and the diatomite in powder is 100-300:50-100:100-350; and b) pressing, sintering and cooling mixture obtained in the step a) in a mould. Compared with the prior art, the invention has the advantages that the provided technical scheme can remove the giardia and the cryptosporidium in the water, has the removal rate reaching over 99.5 percent so as to achieve the aim of improving the water quality, and has simple method, low cost and quick response.

Description

Technical field [0001] The invention relates to a filter medium for removing Gibberellia and Cryptosporidium in water, a preparation method thereof, a filter element using the filter medium, a water purifier and a water dispenser. Background technique [0002] The rapid development of industry and agriculture has caused serious damage to water resources. Industrial wastewater is discharged into rivers and lakes, pesticides, pesticides, etc. are used in large quantities, and domestic garbage and domestic wastewater are discharged wantonly, all of which cause groundwater and surface water quality. Deterioration leads to the production of many harmful substances in the water. Water pollution has increasingly become a serious problem affecting people's lives. [0003] Giallonia and Cryptosporidium are usually called "two worms" or "two worms", and "two worms" are prone to cause Gialloniasis and Cryptosporidiosis. Giardiasis is caused by a small intestinal infection of Giardia lamblia...

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 周奇迪
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