Treatment method of waste water generated by mining weathering crust eluvial type rare earth mine

A weathering crust leaching type, wastewater treatment technology, applied in mining wastewater treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc.

Inactive Publication Date: 2013-08-07
林江颖
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessive ammonia nitrogen in the water will cause algae and other microorganisms to multiply in the water body, causing ecological damage; while metal ions discharged into the water source will affect the water quality of the rivers and streams around the mining area; and the discharge of rare earths is a waste of resources

Method used

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  • Treatment method of waste water generated by mining weathering crust eluvial type rare earth mine

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Embodiment Construction

[0016] Process flow pool: 1. Settling pool with a capacity of 500m3; 2. Filter pool with a diameter of 10m and a pool depth of 6m; 3. An adsorption pool with a pool depth of 5m and a diameter of 5m; 4. Wastewater detection pool; 5. PH Value adjustment pool. See process pool figure 1 , the height difference H1 between the bottom of the drain outlet of the sedimentation tank and the top of the filter tank is 0.5m, the height difference H2 between the bottom of the drain outlet of the filter tank and the top of the adsorption tank is 0.5m, and the height difference H3 between the bottom of the drain outlet of the adsorption tank and the top of the detection tank is 0.5m, The height difference H4 between the bottom of the outlet of the detection pool and the top of the pH adjustment pool is 0.5m.

[0017] 1. Collect the wastewater discharged from rare earth mining into the settling tank. After the tank is full, it starts to settle. After it settles, it is discharged into the filt...

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Abstract

The invention relates to a treatment method of waste water generated by mining weathering crust eluvial type rare earth mine. Adsorption treatment is carried out by virtue of cation resin and anion resin. The treatment method comprises settling, filtering, absorbing, waste water detecting and PH value adjusting. Collected waste water is firstly settled, then is discharged to a filter tank to be filtered by quartz stone or anthracite, then is discharged to an absorption tank so that ammonia nitrogen, cation and anion in the waste water are absorbed by the cation resin and the anion resin; then the waste water is discharged to a detection tank for detecting whether the waste water reaches the standard; if reaching the standard, the waste water is discharged to a PH value adjustment tank for adjusting PH value to reach standard, and then directly discharged to the otuside. When rare earth is found in the detection tank, the cation resin and the anion resin are desorbed by utilizing ammonium chloride or sodium chloride; liquid obtained after desorption is treated like mother liquid mined from a rare earth mine; impurities are removed and rare earth is recycled; water with rear earth settled can be used as a leaching agent for mining or used as a farm-oriented fertilizer. After being desorbed, the cation resin and the anion resin in the absorption tank can be recycled.

Description

technical field [0001] The invention belongs to the field of environmental protection and relates to waste water treatment and resource recycling, in particular to a waste water treatment method produced in the mining of weathering crust leaching type rare earth mines. Background technique [0002] It has been more than 30 years since the mining of weathering crust leaching type rare earth mines. The mining technology has been greatly improved from the initial pool leaching to the current mountain leaching. However, the wastewater discharged by each mining technology They are discharged directly without treatment. Moreover, after the mining is over, the ammonium chloride or ammonium sulfate injected into the mine during mining still has a large amount of residues in the mine and a small amount of rare earth residue after mining, which will flow out naturally with the passage of time and the gradual infiltration of rainwater. The wastewater discharged during the mining proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/10
Inventor 林江颖
Owner 林江颖
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