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Method for recovery treatment of waste-and-old lithium battery electrolyte and treatment of electrolyte wastewater

A waste lithium battery, recycling and processing technology, applied in separation methods, natural water treatment, multi-stage water treatment, etc., can solve the problems of incomplete treatment and incomplete recycling technology, so as to increase biodegradability and overcome incompleteness. Effect

Inactive Publication Date: 2015-05-20
天津卡特化工技术有限公司
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Problems solved by technology

[0004] The technical purpose of the present invention is to overcome the deficiencies of the prior art, overcome the incompleteness and incomplete treatment of the existing recycling technology, and provide a treatment method for reclaiming and treating waste lithium battery electrolyte and electrolyte wastewater

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  • Method for recovery treatment of waste-and-old lithium battery electrolyte and treatment of electrolyte wastewater

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Embodiment Construction

[0027] The technical solutions of the present invention will be further described below in conjunction with specific embodiments. The treated waste electrolyte is the electrolyte in the waste lithium battery. The treated electrolyte wastewater mainly refers to the waste water generated during the process of cleaning electrodes and other components and recycling metals in the process of dismantling the lithium battery, and the waste lithium battery electrolyte is passed through The exhaust gas generated after the treatment in step 1 is passed into the electrolyte wastewater for absorption, so as to be removed during the wastewater treatment process, and at the same time, after the remaining part of the electrolyte treated in step 1 is mixed with the electrolyte wastewater, the second unit is used together for electrolyte Wastewater treatment, waste water often contains high COD, metal ions and refractory organic matter.

[0028] as attached figure 1 As shown in the process flow ...

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Abstract

The invention discloses a method for recovery treatment of a waste-and-old lithium battery electrolyte and treatment of electrolyte wastewater. Three treatment units are employed for treatment. Firstly, the waste-and-old electrolyte is treated. Then, waste gas resulting from the reaction of the electrolyte is pumped into the waste water for absorption, so that the waste gas can be removed during a waste water treatment process; the lithium battery waste water is treated by a Fenton agent through oxidation to obtain improved biodegradability of the waste water; and reaction precipitates are removed through flocculent sedimentation and the obtained water is treated through combination of A2 / O and MBR membrane separation. Finally, the outlet water goes through a RO reverse osmosis unit to ensure the quality of the outlet water. Combination technology of active carbon powder adsorption and ultra-filtration is employed to remove organic pollutants of the concentrated water resulting from the RO unit, so that the water after treatment can meet the requirements of RO high-quality reuse water. According to the invention, imperfection of an existing technical method of waste-and-old lithium battery recovery and treatment is overcome, and quantitative reduction, harmlessness, and reutilization of waste water treatment of the waste-and-old electrolyte are realized.

Description

technical field [0001] The invention relates to various processes of recycling and harmless treatment of lithium battery electrolyte and electrolyte wastewater, and more specifically relates to a treatment method for recycling and treating waste lithium battery electrolyte and electrolyte wastewater. Background technique [0002] Since the commercialization of lithium batteries around 1990, due to the advantages of small size, light weight, fast charging speed, wide temperature range and long cycle life, they are widely used in cameras, mobile phones, notebook computers, portable measuring instruments, etc. , it is also the preferred high-energy power source for future electric vehicles. At present, the positive electrode material of lithium battery is composed of pure aluminum foil (thickness 0.01mm) as current collector and black positive electrode active material coating (thickness about 0.08mm). The black coating contains about 88% of the positive electrode material lit...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C22B7/00B01D53/18
CPCC02F1/444C02F1/5245C02F1/722C02F3/1268C02F3/30C02F9/00C02F2103/34C02F2301/08
Inventor 毛国柱侯长胜霍爱群于涛胡文丽
Owner 天津卡特化工技术有限公司
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