A kind of copper ion modified water treatment method

A copper ion and water treatment technology, applied in the field of water treatment, can solve the problems of difficulty in forming floatable carriers, limited ion adsorption or precipitation control process, and poor adaptability of complexed metal organic pollutants, so as to facilitate flotation separation and extraction , increase the particle size, strengthen the effect of hydrophobicity

Active Publication Date: 2022-07-12
CHINA ENFI ENGINEERING CORPORATION
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Problems solved by technology

[0008] CN110369151A discloses a method for treating heavy metal wastewater by ion flotation of nano-collectors, and proposes to use graphene oxide as a nano-collector, and use graphene to absorb heavy metal ions as a floating carrier to separate 10-2000ppm of flotation by flotation. Cu, Pb, Zn, Hg, Co, Ni and other metal ion wastewater, but in this method, the stable adsorption of heavy ions in wastewater becomes a key influencing factor
[0009] To sum up, the ion flotation water treatment methods in related technologies that contain heavy metal ions and metal-complexed organic pollutants are mostly limited by the regulation process of ion adsorption or precipitation, and are suitable for complexing metal-organic pollutants in water bodies. Poor stability, it is difficult to form a relatively stable planktonic carrier

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  • A kind of copper ion modified water treatment method
  • A kind of copper ion modified water treatment method

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Experimental program
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Effect test

Embodiment 1

[0041] Cu in heavy metal ion wastewater from a smelter 2+ , Ni 2+ , Zn 2+ , Fe 3+ , Co 2+ The total ion concentration is 39.9mg / L, Cu 2+ The concentration is 3.02 mg / L, pH=8-9.

[0042] To the waste water containing metal ions, add 40 mg / L of copper ion modification regulator, wherein the copper ion modification regulator includes 10 parts by weight of copper sulfate and 2 parts by weight of ascorbic acid, stir, and carry out copper ion modification and adjustment for 10min; Add 80mg / L ammonium sulfide and stir evenly, carry out sulfide precipitation adjustment, react for 4 minutes to obtain a mixed slurry, continue to add 2mg / L sodium dodecyl sulfonate as a collector, and carry out flotation separation, the flotation separation time is 8min, flotation separation to obtain foam and purified water containing heavy metal components.

[0043] After being treated by the method of this embodiment, the concentration of each metal ion, the conversion rate of the precipitate and...

Embodiment 2

[0053] A mine processing plant produces backwater. After zinc sulfate is used to suppress zinc and lead separation, the floating lead tailings are activated by copper ions to recover zinc by flotation, and the backwater contains Cu. 2+ 0.5mg / L, Zn 2+ 2.0mg / L, when the return water is returned to the lead flotation process, it is difficult to obtain a better lead priority flotation index.

[0054] to contain Cu 2+ and Zn 2+ Add 2 mg / L copper ion modification regulator to the activated backwater of , react for 4min to obtain a mixed slurry, continue to add 20mg / L cetyltrimethylammonium bromide as a collector, carry out flotation separation, and the flotation separation time is 6min to obtain the treated backwater.

[0055] After treatment by the method of this embodiment, Cu in the backwater 2+ Concentration dropped to 0.01mg / L, Zn 2+ It is reduced to 0.4mg / L, which realizes the purification of the backwater of the concentrator with significant influence of metal ions.

[...

Embodiment 3

[0058] In a certain electroplating waste liquid, Cr 3+ , Cu 2+ , Fe 3+ , Ni 2+ , Zn 2+ , Co 2+ The content is shown in Table 2, and the pH is between 7.5-8.0.

[0059] To the wastewater containing metal ions, add 200 mg / L of copper ion modification regulator, wherein the copper ion modification regulator comprises 10 parts by weight of copper chloride, 50 parts by weight of ammonium chloride and 1 part by weight of hydroxylamine hydrochloride, stir, and carry out copper The ion modification was adjusted for 10min, then 60mg / L sodium sulfide was added to the solution modified by copper ions, stirred evenly, sulfide precipitation was adjusted, and the reaction was carried out for 4-6min to obtain a mixed slurry, and 3mg / L hexyl xanthogen was added continuously. Potassium acid was used as a collector for flotation separation, and the flotation separation time was 6 minutes, and the flotation separation obtained heavy metal component foam and purified water.

[0060] After b...

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Abstract

The invention discloses a copper ion-modified water treatment method, which is characterized by comprising the following steps: a. adding a copper ion modification adjusting agent to a solution to be treated containing metal ions and / or metal-complexed organic pollutants , carry out the modification and adjustment of copper ions to obtain a mixed solution containing modified metal ions; b. add a vulcanization regulator to the mixed solution obtained in the step a, and adjust the sulfide precipitation; c. Surfactant is added to the adjusted mixed solution to perform flotation separation for metal ion precipitation and capture. The method of the invention can realize the rapid and efficient removal of metal ions and their organic complexes in the solution to be treated, realize the effective enrichment of heavy metal ions, and the extraction rate of heavy metal ions can reach more than 95%.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a water treatment method modified by copper ions. Background technique [0002] Industrial production water such as mining, metallurgy, and petroleum can become various sources of pollution. Industrial production water often contains solid powder, metal ions, oil, organic matter, chemicals and other components. In addition to being recycled and reused as industrial water, due to the increase in the components contained in the water body, it is easy to cause water waste and valuable Material loss, and even become a source of pollution that endangers the environment. Water pollution problems in mine concentrators, tailings ponds, smelters, petrochemical plants, material processing plants, etc., have become one of the important factors for the steady development of enterprises. [0003] Water in mining, metallurgy and chemical industries is complex and bulky, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F101/30C02F101/20
CPCC02F9/00C02F1/00C02F1/5236C02F2101/20C02F2101/30
Inventor 康金星宋磊王鑫于传兵吕东郭素红刘志国王传龙王亚运
Owner CHINA ENFI ENGINEERING CORPORATION
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