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Filtering medium for removing microcystic toxins (MC-LR) in drinking water, and filter core and preparation method thereof

A technology of microcystins and filter media, applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc., can solve the problem of inability to remove MC-LR, achieve low cost, high removal rate, and avoid damage Effect

Inactive Publication Date: 2016-04-13
广州市康水科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional water treatment process of waterworks cannot remove MC-LR in water, and MC is detected in the effluent of many waterworks in my country that use surface water as water source

Method used

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  • Filtering medium for removing microcystic toxins (MC-LR) in drinking water, and filter core and preparation method thereof

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preparation example Construction

[0021] The present invention provides a kind of preparation method of the filter medium of removing microcystin in drinking water, it is characterized in that, comprises the following steps:

[0022] a) Ultra-high molecular weight polyethylene powder, activated carbon powder, modified attapulgite powder and pore-forming agent are mixed to obtain a mixture, the weight of the ultra-high molecular weight polyethylene powder, activated carbon powder, modified attapulgite powder and pore-forming agent The ratio is 200~300:100~200:100~200:50~100;

[0023] b) pressing, sintering and cooling the mixture obtained in step a) in a mould;

[0024] The pressing pressure is 0.4MPa-1Mpa; the sintering temperature is 200°C-240°C; the sintering time is 90-150min; the cooling temperature is 40°C-60°C.

[0025] The present invention first mixes ultra-high molecular weight polyethylene powder, activated carbon powder, modified attapulgite powder and a pore-forming agent to obtain a mixture. The...

Embodiment 1

[0054] (1) Take by weighing particle diameter and be 200g of ultra-high molecular weight polyethylene powder of 80 μm, described ultra-high molecular weight polyethylene is the M-I type product of Beijing Dongfang Petrochemical Co., Ltd. Auxiliary No. 2 Factory, and its molecular weight is 1,500,000;

[0055] (2) Weighing 100g of medical activated carbon powder with a particle diameter of 100 μm, the specific surface area of ​​the medical activated carbon is 800m 2 / g;

[0056] (3) Take by weighing 100 g of attapulgite powder modified according to the acid activation modification method of the present invention with a particle diameter of 80 μm;

[0057] (4) Take by weighing 50g of pore forming agent;

[0058] (5) Put the above four powders into a mechanical stirrer and stir for 10 minutes to mix evenly;

[0059] (6) Fill the mixed powder into a tubular mold, press under a hydraulic pressure of 0.7 MPa, and sinter at a temperature of 230° C. for 120 minutes;

[0060] (7) Na...

Embodiment 2

[0062] (1) Take ultra-high molecular weight polyethylene powder 250g, 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;

[0063] (2) Weighing 150g of medical activated carbon powder with a particle diameter of 100 μm, the specific surface area of ​​the medical activated carbon is 1500m 2 / g;

[0064] (3) Take by weighing 150 g of attapulgite powder modified according to the acid activation modification method of the present invention with a particle diameter of 80 μm;

[0065] (4) Take by weighing 80g of pore forming agent;

[0066] (5) Put the above four powders into a mechanical stirrer and stir for 10 minutes to mix evenly;

[0067] (6) Fill the mixed powder into a tubular mold, press under a hydraulic pressure of 0.6MPa, and sinter at a temperature of 230° C. for 100 minutes;

[0068] (7) Naturally cool to 50° C. and then release the m...

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Abstract

The invention provides a preparation method of a filtering medium for removing microcystic toxins in drinking water. The method comprises the following steps: 1, mixing ultrahigh molecular weight polyethylene powder, active carbon powder, modified attapulgite powder and a gas generation agent according to a weight ratio of 200-300:50-100:50-100:100-200:50-100 to obtain a mixture; and 2, compacting the mixture obtained in step 1 in a die under 0.4-1Mpa, sintering the compacted mixture at 200-240DEG C for 90-150min, and cooling the sintered mixture to 40-60DEG C. The filtering medium allowing the removal rate of microcystic toxins in water to be high is prepared through cooperation of synergism of above raw materials with a specific sintering temperature, a sintering pressure and a cooling temperature.

Description

technical field [0001] The invention relates to a filter medium for removing microcystin 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] Microcystin (MC) is a hepatotoxic polypeptide produced by cyanobacteria. More than 60 isomers of MC have been found, among which MC-LR is the most toxic. MC is a kind of peptide toxin, which enters the liver through bile acid carrier in the human body, and the liver becomes its main target organ. The occurrence of primary liver cancer in some areas of my country is likely to be related to MC in ditches, rivers, ponds, and shallow wells. MC is likely to be a promoter of liver cancer. Chronic MC intake can cause liver cirrhosis and progressive fibrosis. , Apoptosis inhibition; Acute MC poisoning causes damage to human liver structure or extensive intrahepatic hemorrhage causes circulatory failure and death. [...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28
CPCB01J20/261B01J20/12B01J20/20B01J20/28014C02F1/283C02F1/285C02F1/286C02F2303/04
Inventor 周羿
Owner 广州市康水科技有限责任公司