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Lithium battery production waste water treatment system

A technology for producing wastewater and treatment system, which is applied in biological water/sewage treatment, water/sewage treatment, flotation water/sewage treatment, etc. It can solve problems such as high operator requirements, difficulty in ensuring effluent quality, and complex wastewater composition. , to achieve good treatment effect, reduce operation difficulty and operating costs, and small footprint

Inactive Publication Date: 2017-06-20
SUZHOU ENV TECH ENVIRONMENTAL PROTECTION ENG
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Problems solved by technology

Wastewater has complex components, poor biodegradability, and certain toxicity
At present, physical and chemical methods are mainly used to treat this kind of waste liquid, such as chemical oxidation decomposition, chemical electrolysis, activated carbon adsorption and reverse osmosis. ensure

Method used

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  • Lithium battery production waste water treatment system
  • Lithium battery production waste water treatment system
  • Lithium battery production waste water treatment system

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, the present invention will be further described

[0013] The cathode and anode wastewater produced by lithium battery production are pretreated by cathode and anode, and other sewage (domestic sewage, workshop flushing wastewater, etc.) are reconciled in the comprehensive adjustment tank at a ratio of 1:1:1.5. After pretreatment, anaerobic treatment, Discharge up to standard after aerobic treatment and advanced treatment,

[0014] Pretreatment is to add 1mg / L of PAM, 100mg / L of PAC for flocculation, adding H 2 SO 4 , NaO makes the pH of the pretreated sewage 6-9;

[0015] Anaerobic treatment adopts IC reactor for deep anaerobic treatment. Under the premise that the water temperature of deep anaerobic wastewater is 37±2℃, the volume load of influent COD is controlled at 6kgCODm 3 / d, the COD removal rate can reach more than 90%;

[0016] The aerobic treatment is a combination of activated sludge method and MBR membrane ...

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Abstract

The invention discloses a lithium battery production waste water treatment system. According to the lithium battery production waste water treatment system, cathode and anode waste water generated in lithium battery production is subjected to cathode and anode pretreatment, and then is mixed with other waste water such as domestic wastewater and workshop washing wastewater at a ratio of 1:1:1-2 in a comprehensive regulating reservoir; an obtained mixed waste water is subjected to pretreatment, anaerobic treatment, aerobic treatment, and deep treatment so as to realize up-to-standard discharge. The water quality and biodegradability of the cathode and anode waste water are adjusted with other waste water; comprehensive building and integrated planning of the lithium battery production waste water treatment system are realized, and investment is reduced; toxic substances are removed, toxicity on microorganisms in subsequent biological treatment is reduced; and treatment effect is improved; recycling of a part of recoverable raw materials is realized, and production cost is reduced; anaerobic treatment are aerobic treatment are combined, occupied area is reduced, and excellent treatment effect is achieved; a subsequent deep treatment system is added flexibly, discharge requirements are satisfied, operation difficulty and operation cost are reduced, and the water quality of discharged water is stable.

Description

technical field [0001] The invention relates to a waste water treatment system, in particular to a lithium battery production waste water treatment system. [0002] technical background [0003] Lithium batteries are more and more widely used in daily life. As a relatively clean energy source, it has become an important product in the development of the battery industry. During the production of lithium batteries, some cleaning wastewater will be generated, the main components are lithium cobaltate, NMP (methylpyrrolidone), carbon powder and esters with small molecular organic substances. Wastewater has complex components, poor biodegradability, and certain toxicity. At present, physical and chemical methods are mainly used to treat this kind of waste liquid, such as chemical oxidation decomposition, chemical electrolysis, activated carbon adsorption and reverse osmosis. ensure. Contents of the invention [0004] In order to solve the above technical problems, the prese...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/20
CPCC02F1/24C02F1/461C02F1/56C02F1/66C02F3/12C02F3/28C02F9/00C02F2101/20
Inventor 郭德华廖军沈建花鲍兵兵吴民黄龙宝朱云芳卫婷婷
Owner SUZHOU ENV TECH ENVIRONMENTAL PROTECTION ENG
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