Unlock instant, AI-driven research and patent intelligence for your innovation.

Filter medium for removing disinfection by-products in drinking water and preparation method thereof

A technology of disinfection by-products and filter media, applied in beverage preparation devices, filtration and separation, water pollutants, etc., can solve the problems of large amounts of electric energy, secondary pollution, and high cost of reverse osmosis, and achieve low cost, high removal rate, and use easy effect

Inactive Publication Date: 2011-12-28
QIDI ELECTRIC GROUP
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] with O 3 Oxidation can reduce the production of trihalomethanes, but O 3 It will oxidize bromide ions and increase the production of bromotrihalomethane; the coagulation process can adsorb the precursor organic matter of THMs, but the effect of removing bromide is not very satisfactory, and it will also make the bromotrihalide in the disinfection by-products The proportion increases; the cost of reverse osmosis is relatively high, it requires a lot of electricity and water, the concentrate is difficult to handle, and it is easy to cause secondary pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Filter medium for removing disinfection by-products in drinking water and preparation method thereof
  • Filter medium for removing disinfection by-products in drinking water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Take by weighing 200g of silver-loaded activated carbon powder, the particle diameter of the silver-loaded activated carbon is 74 μm~104 μm, produced from Guangzhou Wuhuan Activated Carbon Factory;

[0037] (2) Take ultra-high molecular weight polyethylene powder 300g, said 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;

[0038](3) Grinding the natural zeolite to 5-80 mesh, impregnating it with hydrochloric acid with a concentration of 8wt% for 15 hours, washing it after neutralization with sodium carbonate, and boiling it in water for 40 minutes; drying the boiled zeolite at 400°C Calcined under lower pressure, then pulverized to 104 μm ~ 150 μm, weighed 150 g of the prepared activated zeolite powder;

[0039] (4) Take 80g of food-grade ammonium bicarbonate, and the purity reaches more than 99.99%;

[0040] (5) Put the above four powders...

Embodiment 2

[0045] (1) Take silver-loaded activated carbon powder 100g, the particle diameter of described silver-loaded activated carbon is 74 μm~104 μm, produced from Yulin activated carbon factory in Gongyi City;

[0046] (2) Take ultra-high molecular weight polyethylene powder 150g, said 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;

[0047] (3) Treat the zeolite with excess sodium chloride, dry it at 100°C after forming, and finally heat and activate it at 500°C to obtain Na-type zeolite powder, then crush it to 104 μm to 150 μm, and weigh the prepared Na-type zeolite Powder 80g;

[0048] (4) Take food-grade ammonium bicarbonate 120g, and the purity reaches more than 99.99%;

[0049] (5) Put the above four powders into a mechanical stirrer and stir for 10 minutes to mix evenly;

[0050] (6) Fill the mixed powder into a tubular mold, press under a hydrau...

Embodiment 3

[0054] (1) Take by weighing 250g of silver-loaded activated carbon powder, the particle size of the silver-loaded activated carbon is 74 μm~104 μm, produced from Yulin activated carbon factory in Gongyi City;

[0055] (2) Take ultra-high molecular weight polyethylene powder 350g, 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 2.5 million;

[0056] (3) Put 10-20 mesh zeolite ore into NaOH solution, and then heat at 95°C for 70 hours to obtain P-type zeolite powder. After cooling, crush it to 104 μm-150 μm, and weigh 160 g of the prepared P-type zeolite powder ;

[0057] (4) Weigh 100 g of azodicarbonamide, with a purity of more than 99.99%;

[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 0.6MPa, and sinte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a filter medium for removing disinfection by-products in drinking water, comprising the following steps: a) adding a filter medium containing silver-loaded activated carbon powder, ultra-high molecular weight polyethylene powder, activated zeolite powder and pore-forming agent The raw materials are mixed, and the weight ratio of the silver-loaded activated carbon powder, the ultra-high molecular weight polyethylene powder, the activated zeolite powder and the pore-forming agent is: 80-300: 100-400: 60-200: 50-150; b) adding step a ) The resulting mixture is pressed in a mold, sintered, and cooled. The prepared filter medium has a high removal rate of disinfection by-products in water, is suitable for drinking water contaminated by it, avoids the harm caused by disinfection by-products to the human body, is easy to use, and has low cost. Therefore, no follow-up treatment is required, and it is suitable for household terminal drinking water treatment. After testing, the filter medium has a removal rate of more than 95% for disinfection by-products in drinking water.

Description

technical field [0001] The invention relates to a filter medium for removing disinfection by-products bromotrihalomethane and bromohaloacetic acid 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] There is a small amount of bromide in natural water bodies. With the intrusion of seawater and the discharge of brine from oil fields, industrial sewage and wastewater, gasoline additives such as dibromomethane, pesticides such as methyl bromide and insecticides, the concentration of bromide in water will increase. Usually the content of bromide in water is very small, which itself is not very harmful to the human body, but in the process of disinfection and disinfection of drinking water, bromide will chemically react with disinfectants to generate a variety of disinfection by-products, which pose a potential threat to human health , volatile trihalome...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01J20/26B01J20/28B01J20/30C02F1/28C02F1/50C02F1/72C02F1/00A47J31/00C02F101/36
Inventor 周奇迪栾云堂
Owner QIDI ELECTRIC GROUP