Electrolytic treatment system for ternary precursor waste water and treatment method thereof

A technology of electrolytic treatment and precursor, applied in water/sewage treatment, water/sewage treatment equipment, water/sludge/sewage treatment, etc., can solve high operation and maintenance costs, enterprises cannot recover costs, oversupply of crystalline salt, etc. problems, to achieve the effect of reducing operation and maintenance costs, reducing operating costs, and realizing recycling

Inactive Publication Date: 2019-01-18
昆山三一环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] With the continuous expansion of the market capacity of ternary lithium batteries, the treatment volume of industrial wastewater is also gradually increasing, resulting in an oversupply of crystalline salt and a reduction in treatment benefits.
In addition, the initial investment cost of the existing treatment process is high, and the subsequent operation and maintenance costs are relatively high, which leads to the problem that the enterprise cannot recover the cost

Method used

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  • Electrolytic treatment system for ternary precursor waste water and treatment method thereof
  • Electrolytic treatment system for ternary precursor waste water and treatment method thereof
  • Electrolytic treatment system for ternary precursor waste water and treatment method thereof

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Embodiment 1

[0055]An exemplary embodiment of the present invention, such as figure 1 As shown, a ternary precursor wastewater electrolytic treatment system is used for electrolytic treatment of industrial wastewater containing sodium sulfate or lithium sulfate, including: electrolysis unit 1, power supply unit 2, acid temporary storage unit 3, lye temporary storage unit 4. Acid liquid circulation unit 5, alkali liquid circulation unit 6, waste water unit, anode liquid unit 12 and heat exchange unit 13; electrolysis unit 1 is connected with power supply unit 2, acid liquid temporary storage unit 3, alkali liquid temporary storage unit 4, The waste water unit, the polar liquid unit 12 and the heat exchange unit 13 are connected through pipelines, the acid circulation unit 5 is connected with the electrolysis unit 1 and the acid temporary storage unit 3 respectively through pipelines, and the lye circulation unit 6 is connected with the electrolysis unit 1 and the lye respectively Temporary ...

Embodiment 2

[0099] This embodiment is a preferred embodiment of the present invention, and the difference between this embodiment and Embodiment 1 is that it also includes a washing water treatment unit and a mother liquid treatment unit.

[0100] Such as image 3 As shown, a ternary precursor wastewater electrolytic treatment system is used for electrolytic treatment of industrial wastewater containing sodium sulfate or lithium sulfate, including: electrolysis unit 1, power supply unit 2, acid temporary storage unit 3, lye temporary storage unit 4. Acid liquid circulation unit 5, alkali liquid circulation unit 6, waste water unit, polar liquid unit 12, heat exchange unit 13, washing water unit and mother liquor unit; electrolysis unit 1 is connected with power supply unit 2, acid liquid temporary storage unit 3, The lye temporary storage unit 4, the waste water unit, the polar liquid unit 12 and the heat exchange unit 13 are connected through pipelines, the acid circulation unit 5 is con...

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Abstract

The invention relates to an electrolytic treatment system for ternary precursor waste water, which is used for electrolytic treatment of waste water containing sodium sulfate or lithium sulfate. The electrolytic treatment system comprises a waste water unit, an electrolytic unit, a power supply unit, an acid-liquid temporary storage unit, an alkaline-liquid temporary storage unit, an acid-liquid circulation unit and an alkaline-liquid circulation unit, wherein the electrolytic unit is connected with the waste water unit and is a bipolar-membrane electrolytic unit; the power supply unit is connected with the electrolytic unit and is used for supplying direct-current power; the acid-liquid temporary storage unit is connected with the electrolytic unit; the alkaline-liquid temporary storage unit is connected with the electrolytic unit; the acid-liquid circulation unit is respectively connected with the acid-liquid temporary storage unit and the electrolytic unit; the alkaline-liquid circulation unit is respectively connected with the alkaline-liquid temporary storage unit and the electrolytic unit. The invention also relates to an electrolytic treatment method for the ternary precursor waste water. The electrolytic treatment system and the electrolytic treatment method have the advantages that high-concentration waste water is electrolyzed to generate diluted acid liquid and diluted alkaline liquid by the bipolar-membrane electrolytic unit so as to be recovered for use and realize recycling.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a ternary precursor wastewater electrolytic treatment system and a treatment method thereof. Background technique [0002] Ternary lithium battery is the most widely used polymer battery, and its positive electrode material is nickel cobalt lithium manganese oxide. In the production process of ternary lithium battery cathode materials, a large amount of NH 4 + Ions, SO 4 2- Ion, Na + Ion and heavy metal nickel and cobalt industrial wastewater, and industrial wastewater is alkaline, direct discharge of industrial wastewater will seriously pollute the environment. [0003] At present, for this kind of industrial wastewater, the commonly used treatment process is multiphase critical membrane removal of ammonia nitrogen-swirl electrolysis of heavy metals-mechanical vapor recompression (Mechanical Vapor Recompression, MVR) evaporation and crystallization i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/10
CPCC02F1/461C02F1/46104C02F2101/101C02F2201/46115
Inventor 赵利娜黄岐汕王卓
Owner 昆山三一环保科技有限公司
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