Chelating reaction-based heavy metal-containing sewage treatment device and use method thereof

Abstract

The invention discloses a chelating reaction-based heavy metal-containing sewage treatment device and a use method thereof. The chelating reaction-based heavy metal-containing sewage treatment device comprises a precipitation filtering box, a heating air blower, a centrifugal drying machine and a powder collecting box; the heating air blower, the centrifugal drying machine and the powder collecting box are all located on one side of the exterior of the precipitation filtering box; the centrifugal drying machine is located on one side of the output end of the heating air blower; and the powder collecting box is located on the side, away from the heating air blower, of the centrifugal drying machine. The method comprises the following steps of: step 1, adjusting the pH value of sewage; 2, adding a heavy metal chelating agent into a precipitation chamber, and standing for precipitation; 3, performing filtering by a filter plate to obtain clear water; 4, discharging precipitates, and performing centrifugal drying; and 5, collecting heavy metal precipitate powder; With the chelating reaction-based heavy metal-containing sewage treatment device and the use method thereof of the invention adopted, the problems that achelation reaction-based heavy metal sewage treatment device is complex in structural design, low in heavy metal sewage treatment efficiency and high in heavy metal sewage treatment cost in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment equipment, and in particular relates to a heavy metal-containing sewage treatment device based on chelation reaction and a use method thereof. Background technique [0002] Heavy metal wastewater refers to wastewater containing heavy metals discharged from industrial production processes such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation. Heavy metal (such as cadmium, nickel, mercury, zinc, etc.) wastewater is one of the most serious environmental pollution and one of the most harmful industrial wastewater. With the development of industrialization, the amount of sewage containing heavy metal ions is increasing. Direct discharge will not only pollute the environment such as water sources and soil, but also enter the human body through the food chain, causing serious harm to human health. [0003] A chelation reaction is a chemical ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a heavy metal-containing sewage treatment device based on chelation reaction and its use method, which solves the complex structure design of the heavy metal sewage treatment device based on chelation reaction in the prior art, and the treatment of heavy metal sewage Low efficiency and high cost of heavy metal sewage treatment

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