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

A technology for filter media and cryptosporidium, applied in the field of filter media and its preparation for removing Giardia trichomonas and Cryptosporidium in water, can solve the problems of high price, complicated equipment, power consumption and time consumption, and improve water quality , simple method, quick effect

Inactive Publication Date: 2011-04-27
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) Take ultra-high molecular weight polyethylene powder 190g, 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;

[0032] (2) Take medical activated carbon powder 70g, the particle diameter of described medical activated carbon is 38~250 microns;

[0033] (3) Take by weighing 160g of diatom fine earth powder, the particle diameter of described diatom fine earth powder is 11~38 microns;

[0034] (4) Take 60 grams of food-grade ammonium bicarbonate, and the purity reaches more than 99.99%;

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

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

[0037] (7) Naturally cool to 50°C and then release the mold, that is, a tubular filter element with many f...

Embodiment 2

[0040] (1) Take ultra-high molecular weight polyethylene powder 150g, 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;

[0041] (2) Take medical active carbon powder 100g, the particle diameter of described medical active carbon is 78~250 microns;

[0042] (3) Take 160g of diatom fine earth powder, the particle diameter of described diatom fine earth powder is 15~74 microns;

[0043] (4) Take 50 grams of food-grade ammonium bicarbonate, and the purity reaches more than 99.99%;

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

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

[0046] (7) Natural cooling to 25°C and then demoulding, that is, a tubular filter element with many fine pores.

[0047] T...

Embodiment 3

[0049] (1) Take ultra-high molecular weight polyethylene powder 280g, 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;

[0050] (2) Take medical activated carbon powder 50g, the particle diameter of described medical activated carbon is 89~250 microns;

[0051] (3) Take 300g of diatom fine earth powder, the particle diameter of described diatom fine earth powder is 11~38 microns;

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

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

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

[0055] (7) Natural cooling to 25°C and then demoulding, that is, a tubular filter element with many fine pores.

[0056] The prepared filt...

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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 Giardia trichomonas and Cryptosporidium in water, a preparation method thereof, a filter element using the filter medium, a water purification device and a water dispenser. Background technique [0002] The rapid development of industry and agriculture has led to serious damage to water resources. Industrial wastewater is discharged into rivers and lakes, pesticides, insecticides, etc. are used in large quantities, and domestic garbage and domestic wastewater are discharged indiscriminately. As a result, many harmful substances are produced in the water. Water pollution has increasingly become a serious problem affecting people's lives. [0003] Giardia and Cryptosporidium are commonly referred to as "two worms" or "two worms", and "two worms" are prone to cause giardiasis and cryptosporidiosis. Giardiasis, an infection of the small intestine by Giardia lamblia, can be asymptomatic or cause clinic...

Claims

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Application Information

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