Mining sewage treatment method

A treatment method and technology for mining sewage, applied in mining wastewater treatment, adsorption water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve problems such as large amount of flocculant, secondary pollution of water body, vicious cycle, etc., to achieve Improve the adsorption performance, strong electricity neutralization ability, and improve the effect of flocculation effect

Inactive Publication Date: 2019-06-11
长沙如洋环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a treatment method for mining sewage to solve the problem that the amount of conventional flocculant used in the prior art is relatively large, which easily causes secondary pollution to the water body, and at the same time, the flocculation effect is often reduced due to the coagulation of the flocculant , increasing the amount of flocculant on this basis will cause problems such as vicious circle

Method used

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preparation example 1

[0056] A) Add 0.1mol of ferric chloride and 0.8mol of aluminum chloride into 1L of water and mix to prepare mixed solution M1;

[0057] B) Under the condition of magnetic stirring, add 200 mL of sodium hydroxide aqueous solution with a concentration of 0.8 mol / L dropwise at a rate of 50 drops / min to 1 L of the mixed solution M1, and then place it under the condition of a stirring rate of 200 r / min for 20 h Afterwards, heat and concentrate at 60°C, then dry and grind at 120°C to obtain cured product M2;

[0058] C) Under the condition that the temperature is 100°C, place the zeolite in a 0.8mol / L ammonium nitrate solution and soak it once for 2 hours, then take it out, then place it in a 1.2mol / L ammonium nitrate solution and soak it for a second time for 4 hours, Then take it out and soak it three times in 0.8mol / L ammonium nitrate solution for 2 hours, take it out, wash it with clean water and dry it, and put it in 0.5mol / L sodium chloride aqueous solution under the condition...

Embodiment 2

[0061] A) Add 0.4mol of ferric chloride and 1.5mol of aluminum chloride into 1L of water and mix to prepare mixed solution M1;

[0062] B) Under magnetic stirring conditions, add 300mL of sodium hydroxide aqueous solution with a concentration of 1.2mol / L dropwise to 1L of mixed solution M1 at a rate of 100 drops / min, and then place it for 0h at a stirring rate of 300r / min. After that, heat and concentrate at 80°C, then dry and grind at 140°C to obtain cured product M2;

[0063] C) Under the condition that the temperature is 100° C., place the zeolite in a 1.2 mol / L ammonium nitrate solution and soak for 2 hours once, take it out, and place it in a 1.2 mol / L ammonium nitrate solution for a second immersion for 4 hours. Then take it out and soak it three times in 1.2mol / L ammonium nitrate solution for 2 hours, take it out, wash it with clean water and dry it, and put it in 0.8mol / L sodium chloride aqueous solution under the condition of stirring speed of 200r / min. 6h, obtained ...

Embodiment 3

[0066] A) Add 0.3mol of ferric chloride and 1.2mol of aluminum chloride into 1L of water and mix to prepare mixed solution M1;

[0067] B) Under magnetic stirring conditions, add 240mL of sodium hydroxide aqueous solution with a concentration of 1mol / L dropwise to 1L of mixed solution M1 at a rate of 80 drops / min, and then place it under the condition of a stirring rate of 240r / min for 24h , then heated and concentrated at 70°C, and then dried and ground at 130°C to obtain a cured product M2;

[0068] C) Under the condition that the temperature is 90°C, place the zeolite in the ammonium nitrate solution with a concentration of 1 mol / L for 3 hours, take it out, then place it in the 1 mol / L ammonium nitrate solution for a second time for 3 hours, and then take it out After three immersions in 1 mol / L ammonium nitrate solution for 3 hours, take it out, wash it with clean water and dry it, and then soak it in 0.6 mol / L sodium chloride aqueous solution for 5 hours under the conditi...

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Abstract

The invention provides a mining sewage treatment method. The method comprises the following steps: 1) carrying out grid filtration on mining sewage to obtain sewage subjected to particle removal; and2) adding a flocculant into the sewage subjected to particle removal for flocculating precipitation, and removing precipitations. The flocculating agent is prepared from the following steps: A) mixingferric chloride and aluminum chloride in the presence of a solvent to prepare a mixed solution M1; B) dropwise adding alkali liquor into the mixed liquor M1 under a magnetic stirring condition, thencarrying out standing for 20-30 hours, carrying out concentrating at a temperature of 60-80 DEG C, and carrying out drying and grinding to prepare a cured product M2; C) soaking zeolite into an ammonium nitrate solution for 8-10 hours at a temperature of 90-100 DEG C, and then soaking the zeolite into a sodium chloride solution for 5-6 hours to prepare modified zeolite; and D) mixing the modifiedzeolite, the cured product M2 and polyacrylamide to prepare the flocculant. The method has the advantages of small water pollution and good treatment effect.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a treatment method for mining sewage. Background technique [0002] Mining sewage is a type of wastewater containing a large amount of metal ions. The mining sewage produced in the mining area has a huge content, and it can penetrate the soil and directly enter the groundwater. Therefore, once it is discharged arbitrarily, it will cause great and irreparable damage to the environment. influences. [0003] In the prior art, methods such as coagulation and sedimentation are often used for its treatment, while conventional flocculants often have positive and negative typical groups to make particles or particles close together, so that they can be concentrated and separated by precipitation come out. However, conventional organic or inorganic flocculants are often harmful to the human body. Once the amount is slightly larger, it will cause secondary pollution to the water body and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56C02F1/28C02F103/10
Inventor 不公告发明人
Owner 长沙如洋环保科技有限公司
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