Mineral processing wastewater processing method

Abstract

The invention discloses a mineral processing wastewater processing method. According to the method, wastewater sequentially flows through a water collecting well, a coarse screen, a primary sedimentation tank, a pH adjusting tank, a carbon dioxide vortex convection scum separation reactor, an aeration tank, a biological oxidation filter tank, a secondary sedimentation tank, and a clean water tank.The eddy flow wall attachment effect in fluid mechanics is innovatively utilized, when fluid in a container carries out vortex motion, a counter rotation force is applied on the center of the vortexso as to generate a reverse vortex; the barium ions in the fluid will have an eddy flow wall attachment effect, barium ions will gradually be gathered in a narrow region between the inner reverse vortex and the outer vortex; the ion concentration in the local area is increased; then carbon dioxide is dissolved in the solution to form carbonate ions; thus barium ions can be combined with the carbonate ions to generate insoluble barium salt precipitates, insoluble barium salt precipitates flow up along the narrow region between two vortexes, finally barium salt scum is formed, and the barium ions in the solution are finally removed.

Description

technical field [0001] The invention relates to a treatment method for ore dressing wastewater, which belongs to the field of wastewater treatment in environmental protection. Background technique [0002] Mineral resources are an important material basis for the development of human society and the construction of the national economy. Mining is the industry with the longest history in my country, and it is also the basic industry for the development of the national economy. It involves agriculture, light industry, chemical industry, metallurgy, machinery, construction, energy, Many fields of transportation, national defense and people's daily life. It can be seen that the mining industry plays an irreplaceable and important role in the development of my country's economy. However, during the mining process, mines require a large amount of production water, and at the same time discharge a large amount of wastewater. The indicators such as the concentration of heavy metal i...

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Problems solved by technology

However, due to the high cost of membrane modules, membrane fouling during use, and reduced flux, the current research on the application of membrane separation technology is mainly concentrated in experimental institutions.

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