Four-step method for processing and recycling tin ore floatation wastewater

Abstract

The invention discloses a four-step method for processing and recycling tin ore floatation wastewater, which comprises a new floatation technique, chemical treatment, physical treatment and biological treatment. The four-step method is characterized in that the principle of putting prevention first and providing prevention and control is adopted. The method is as follows: the new floatation technique and process are utilized to reduce the floatation wastewater and the microgranular particles from the headstream and reduce the usage amount of floatation reagents; because the chemical treatmentmethod is used, the concentration of polyacrylamide in the tin ore floatation wastewater is increased from 0.5 percent to 0.9-1.1 percent, and the settling rate of part of the wastewater is improved;the physical treatment method is adopted to increase the settling distance and the settling time, the settling distance is extended for another 600 to 800m on the basis of 200m, and the settling timeis increased for another 25 to 27 hours on the basis of 10 hours; aquatic organisms or plants, such as fish, frogs, aquatic weeds and the like are adopted to process the wastewater, the ecological reconstruction is realized, the agricultural irrigation standards are met, the utilization ratio of floatation return water is improved from 86 percent to above 97 percent, and peaceful and friendly coexistence of human and environment is realized.

Description

Technical field

[0001] The invention belongs to the technical field of mineral processing wastewater treatment and relates to a method for the treatment and recycling of tin ore processing wastewater. Background technique

[0002] The treatment of mineral processing wastewater is an important manifestation of environmentally friendly enterprises and one of the important requirements of clean production. The waste water discharged from the crushing and beneficiation process of the beneficiation plant is called beneficiation wastewater. In non-ferrous metal beneficiation, 4~7m of water used for 1t ore flotation process 3 , Re-select water 20~26m 3 , Floating magnetic coupling chooses water 23~27m 3 , The water used for heavy floatation is 20~30m 3 , Excluding the amount of recycled water, most of the consumed water is discharged into the tailing pond in the form of tailings along with the tailings.

[0003] Over the years, the treatment process of beneficiation wastewater has been t...

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