Filtering medium and filter element for removing high chlorate in drinking water and preparation method

Abstract

The invention provides a preparation method of a filtering medium for removing high chlorate in drinking water. The preparation method comprises the following steps: a), mixing ultra-high molecular weight polyethylene powder, activated carbon powder, water talcum powder, attapulgite mountain flour and a pore forming agent so as to obtain a mixture, wherein the weight ratio of the ultra-high molecular weight polyethylene powder to the activated carbon powder to the water talcum powder to the attapulgite mountain flour to the pore forming agent is (100-300): (50-60): (50-100):(50-100): (50-100); b) pressing, sintering and cooling the mixture obtained in the step a) in a mold. Under the synergistic effect of the raw materials, the prepared filtering medium is high in removal rate of high chlorate in water, simple in method, applicable to drinking water polluted by high chlorate, simple and convenient to use and low in cost, damage of high chlorate to human bodies is avoided, and in addition, as a filter element rather than powder is adopted, the filtering medium needs no later treatment and is applicable to domestic terminal drinking water treatment.

Description

technical field [0001] The invention relates to a filter medium for removing perchlorate 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] Since the 1990s, perchlorate has been found in drinking water in many places in the United States. Since 1997, perchlorate has been found in 35 U.S. states and has been found in high concentrations in the drinking water of 11 million people. Perchlorate naturally occurs in very low levels in soil, but is present in large quantities in rocket and missile launch fuel for satellite launches and spacecraft voice-activated. my country is also a missile and satellite launching country, and also a big producer of firecrackers and fireworks. Therefore, the problem of perchlorate needs to be paid more attention to. [0003] Babies and children are most vulnerable to the hazards of perchlorate. High doses of perchlora...

AI Technical Summary

Problems solved by technology

[0004] The traditional water treatment process has a poor treatment effect on perchlorate and cannot effectively remove perchlorate; the ion exchange method is cumbersome, and it is difficult to treat the rinse water after replacement saturation; the reverse osmosis method is cumbersome to use, which consumes water and electricity The cost is high, the discharged concentrate is not easy to handle, and it is easy to cause secondary pollution, and the treatment efficiency of activated carbon is not high

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