Filtering medium used for eliminating haloacetic acids in water and preparation method thereof and filter element made of the filtering medium

A technology of filter medium and filter element, which is applied in the field of filter medium and its preparation, can solve the problems that the research of haloacetic acid is not deep enough, and has not attracted more people's attention, and achieves the effect of no secondary pollution and good adsorption effect

Inactive Publication Date: 2008-02-20
QIDI ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The World Health Organization (WHO) and the United States and other countries and organizations have set extremely strict limits on the content of haloacetic acids in drinking water. However, the research on haloacetic acids in my country is not deep enough and has not attracted more people's attention.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 100 grams of medical activated carbon with a particle size of 140-170 mesh (it can pass through a 140-mesh sieve but not through a 170-mesh sieve, the same below), 180 grams of ultra-high molecular weight polyethylene with a molecular weight of 3.5 million, and a particle size of 170-170 mesh. 20 grams of 200-mesh modified zeolite powder, 50 grams of food-grade ammonium bicarbonate, 10 grams of calcium sulfite, and 10 grams of diatomaceous earth, put them in a stirrer and stir for 90 minutes, take out the part and put it into a tubular mold, press, After sintering at 210°C for 140 minutes, cool to 40°C and demould to obtain a tubular filter element with many fine pores.

Embodiment 2

[0035]Weigh 110 grams of Yizhou activated carbon with a particle size of 120-140 mesh, 200 grams of ultra-high molecular weight polyethylene with a particle size of 100-140 mesh, 30 grams of modified zeolite powder with a particle size of 140-170 mesh, food-grade bicarbonate 55 grams of ammonium, 10 grams of diatomaceous earth, put them in a stirrer and stir for 90 minutes, put them into a tubular mold, press them, sinter at 230°C for 130 minutes, cool to 40°C and demould, you can get multi Microporous tubular filter element.

Embodiment 3

[0037] Weigh 130 grams of medical activated carbon with a particle size of 100-140 mesh, 220 grams of ultra-high molecular weight polyethylene with a particle size of 100-140 mesh, 10 grams of modified zeolite powder with a particle size of 200-270 mesh, and 5 diatomite gram, 80 grams of food grade ammonium bicarbonate, 10 grams of calcium sulfite, put it in a stirrer and stir for 90 minutes, take out the part and put it into a tubular mold, press it, sinter at 230°C for 150 minutes, and cool to 40°C After demoulding, a tubular filter element with many fine pores can be obtained.

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Abstract

The present invention relates to a filtering medium preparation method. The method comprises the steps as follows; fully mix and press 100 to 300 weight ratio of ultra-high molecular weight polyethylene, 50 to 200 weight ratio of active carbon, 10 to 50 weight ratio of modified zeolete, 5 to 35 weight ratio of diatom fine soil, 20 to 80 weight ratio of hole generating agent, 0 to 25 weight ratio of calcium sulfite; sinter the mixture for 80 to 150 minutes under 180 to 250 DEG C; and then cool the mixture. The filtering medium and the filtering element prepared by above method can be used for eliminating the halogen acetic acid in water. The present invention has the advantages of no secondary pollution and high efficiency of eliminating halogen acetic acid, and easy usage and low cost of the filter element.

Description

technical field [0001] The present invention relates to a filter medium and a preparation method thereof, also relates to a filter element composed of the filter medium, and also relates to a method for removing haloacetic acid in water by using the filter medium or the filter element of the present invention. Background technique [0002] Chlorination disinfection technology is a water supply disinfection technology that has been used in my country for many years. However, the latest research results show that chlorine reacts with some organic and inorganic components in water during chlorination disinfection to generate a series of halogenated organic by-products, most of which pose a potential threat to human health, especially when using traditional pre-chlorination. During the disinfection process, the high concentration of chlorine directly reacts with the higher concentration of organic pollutants in the raw water, and the concentration of the generated chlorinated by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20B01J20/20B01J20/16C02F1/28C02F1/58
Inventor 周奇迪栾云堂
Owner QIDI ELECTRIC GROUP
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