Treatment system for wastewater containing copper, nickel and zinc heavy metal ions

Abstract

The invention relates to the field of wastewater treatment, in particular to a treatment system for wastewater containing copper, nickel and zinc heavy metal ions. The system comprises a treatment box, a circulating mechanism is arranged in the treatment box; a linkage mechanism is arranged on the surface of the lower end of the circulating mechanism; two air floatation mechanisms are symmetrically arranged on the inner wall of the treatment box; sealing mechanisms are arranged on the surfaces of the two air floatation mechanisms; an elliptical disc is driven to rotate through an arranged driving shaft; when the push disc rotates, a sliding rod 33 is driven to move left and right through an elliptical groove; the sliding rod 33 drives a pull rod 34 to move left and right; a piston is pulled to move through the pull rod; when the piston moves towards a fixing plate, external air is collected through an air inlet pipe. When the piston is far away from the fixing plate, the push rod pushes a blocking plate to rotate to block the air inlet pipe, then air in an air-entrapping cylinder is exhausted to an air transmission pipe through an air conveying pipe, then the air is sprayed out through a one-way nozzle to form bubbles, the air spraying device operates through a driving shaft in the circulating mechanism, and the bubble generation cost is reduced.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a waste water treatment system containing copper, nickel and zinc heavy metal ions. Background technique [0002] Heavy metal wastewater treatment refers to the process of purifying the heavy metals contained in wastewater to meet the water quality requirements of a certain water body for drainage or reuse. The methods of heavy metal ion wastewater treatment can be roughly divided into chemical methods, physical treatment methods and biological methods. Three categories of treatment. [0003] The existing metal ion wastewater treatment will use the air flotation method. The air flotation method is a method of solid-liquid separation using the adsorption of air bubbles. Its basic principle is to introduce or generate a large number of fine air bubbles in the water to make them adhere On the metal ions, the metal ions in the wastewater are separated and sent to the top of the ...

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Problems solved by technology

[0004] For the air flotation device in the prior art, the waste water was only treated by air flotation through the aeration device when it was running, but the moving track of the bubbles was fixed, which caused the bubbles to be unable to completely treat the wastewater, and the air flotation device discharged the air bubbles The problem that energy costs are relatively large, the present invention provides a wastewater treatment system for heavy metal ions containing copper, nickel, and zinc

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