Mine wastewater treatment device and treatment method thereof

Abstract

The invention relates to a mine wastewater treatment device and a treatment method thereof. The bottom of the reactor is communicated with a water inlet pipe; a first pipe mixer and a second pipe mixer, which are made of unplasticized polyvinyl chloride (UPVC), are arranged in the water inlet pipe; a stirrer is arranged in the middle of the reaction chamber of the reactor; the four sides of the reactor are communicated with an inclined tube sedimentation area respectively; an inclined tube filler with a diameter of 40 millimeters is arranged in the middle of the inclined tube sedimentation; a clear water area is formed above the inclined tube filler in the inclined tube sedimentation area; clear water is discharged out from a water discharge tank; and a conical cavity below the inclined tube filler in the inclined tube sedimentation area is a sludge area. Effluent obtained after treatment by the device and the method reaches the following standards: the pH value is 6 to 9; the suspended matter concentration is less than or equal to 20mg / L; the total lead concentration is less than or equal to 0.0001mg / L; the total cadmium concentration is less than or equal to 0.0001mg / L; the total arsenic concentration is less than or equal to 0.0001mg / L; the zinc concentration is less than or equal to 0.2mg / L; the manganese concentration is less than or equal to 0.2mg / L; the total mercury concentration is less than or equal to 0.0001mg / L; the hexavalent chromium concentration is less than or equal to 0.0001mg / L; the CODcr concentration is less than or equal to 20mg / L; and the copper concentration is less than or equal to 0.0001mg / L.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment equipment and its treatment process, and relates to a mine waste water processor and a treatment method for treating mine acid waste water. Background technique [0002] Mine acid wastewater is a special acid wastewater produced during mining and utilization. Metal mine wastewater mainly comes from pit water discharged from mining production, rainwater from waste rock yards, and ore washing and tailings wastewater discharged from mineral processing plants. . Because metal ore bodies are often accompanied by a variety of metals and sulfide minerals, during the mining process, these minerals form a sulfuric acid-ferric sulfate solution under the joint action of air, water and bacteria, and dissolve various ions in the ore, thus producing Acid wastewater containing heavy metals such as copper, manganese, zinc, iron, lead, cadmium, etc. [0003] The content of heavy metals in mine acid...

AI Technical Summary

Problems solved by technology

[0006] At present, the usual mine acid wastewater treatment process is complicated, covers a large area, has many equipment and facilities, low efficiency, large project investment, high operation and maintenance costs, and mining enterprises are often unbearable or have not been effectively put into use after the project is completed.

Since there is no special equipment to treat the heavy metal ions in the mine acid wastewater, the heavy metal substances in the wastewater exist in the form of dissolved ions in the wastewater. If they are discharged directly without treatment, they will cause heavy metal pollution and seriously affect the environment.

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