Selenium extracting device and method

Abstract

The invention discloses a selenium extracting device and method. The selenium extracting device comprises a coarse filtering pipe, an active sludge reaction tank, a washing tank, a filtering tank, a smashing pipe and a selenium filter and is characterized in that the coarse filtering pipe is used for filtering selenium-containing wastewater to obtain first wastewater; the active sludge reaction tank is used for performing active sludge reaction, an active sludge sponge containing active sludge is arranged in the active sludge reaction tank, and second wastewater and selenium-containing activesludge sponge are obtained after the active sludge sponge has reaction with the first wastewater for preset time; the washing tank is used for washing the ballast water treatment device with clean water to obtain a first selenium-containing target microbial solution; the filtering tank is used for filtering the first selenium-containing target microbial solution to obtain a second selenium-containing target microbial solution; the smashing pipe is used for smashing the second selenium-containing target microbial solution to obtain a selenium-containing solution; the filter is used for filtering the selenium-containing solution to obtain elemental selenium. By the device, selenium can be effectively extracted from the selenium-containing wastewater, and selenium resource loss can be avoided.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a selenium extraction device and method. Background technique [0002] With the increasing degree of social industrialization, the crisis of global resource shortage continues to deepen, resource shortage has become a bottleneck restricting social and economic development, and resource issues have also affected all aspects of people's daily life. As a natural resource, selenium is an essential trace element for human and animal physiology, and plays an extremely important role in human health. [0003] With the development of industry, the man-made selenium also increases accordingly. Selenium-containing wastewater mainly comes from mining, metal smelting, petroleum processing, coal-fired thermal power plants, and local agricultural irrigation. For example, the selenium concentration in mining wastewater is as high as 10 mg / L or more. There are also various heavy metal...

AI Technical Summary

Problems solved by technology

However, the current reactor only treats the wastewater, but does not effectively extract the selenium in the wastewater, resulting in a large loss of selenium resources

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