Method, device and system for removing lead in water and application of metal medium

Abstract

The invention discloses a method, a device and a system for removing lead in water and application of a metal medium. The method comprises the following steps of: agglomerating small-ball-shaped colloid molecular lead into large-ball-shaped colloid molecular lead through a metal medium to form metal flocculation; and removing the large-ball-shaped colloid molecular lead from the water under the filtering action of a filter medium. According to the application of the metal medium, small-ball-shaped molecular lead in water is condensed into large-ball-shaped molecular lead through the metal flocculation effect of the metal medium on the molecular lead in the water. The device comprises a shell, a metal medium and a filter medium, the shell is provided with a water inlet and a water outlet, the metal medium is arranged in the shell, and the filter medium is arranged in the shell or close to the outer side of the water outlet. The system comprises the device. According to the application,under the action of the metal medium, small-ball-shaped molecular lead in water can be condensed into large-ball-shaped molecular lead, and the molecular lead in the water can be effectively removed by the filtering action of the filter medium.

Description

technical field [0001] The application belongs to the technical field of water treatment, and specifically relates to a method, device, system and application of metal media for removing lead in water. Background technique [0002] Lead is a heavy metal pollutant. The reason for its high toxicity is that it can accumulate in the human body. Once it enters the human body, it is difficult to get rid of it. It can directly damage the nervous system of the human body, causing anemia, nervous dysfunction and kidney damage. Affect brain functions such as intellectual development and memory of infants and young children. [0003] The Chinese invention patent with the publication number CN 109052544 A discloses a water treatment material for removing lead from waste water and its application. It is mainly aimed at the removal of ionic lead in water, and mainly uses the adsorption of lead ions in water by the adsorption material. The purpose of removal has been achieved. Among them...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned disclosed lead removal methods, only the removal of ionic lead is involved, but there are few reports on the removal of colloidal molecular state lead in water.

[0004] The pH value of drinking water is between 6.5-8.5, among which weakly alkaline water is beneficial to human health, and colloidal molecular lead exists as a special form of heavy metal in drinking water, through conventional activated carbon, ion exchange Resin, filtration and other solutions are difficult to remove, and this substance has adverse effects on human health

At present, the filtration function of molecular lead is realized by special activated carbon or electric crystal membrane, but the above two removal methods have the disadvantages of slow water filtration speed and inability to remove scaling components.

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