Treatment process and treatment system of lithium battery waste liquid

A treatment process, lithium battery technology, applied in precipitation treatment, multi-stage water treatment, water/sewage treatment, etc., can solve problems such as easy blockage of filter membranes, collapse of biochemical systems, excessive pollutants, etc., to improve biodegradability, Reduce the content of pollutants and reduce the effect of COD
CN106673369AActive Publication Date: 2017-05-17GUANGREEN ENVIRONMENTAL PROTECTION ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGREEN ENVIRONMENTAL PROTECTION ENG
Publication Date
2017-05-17

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Abstract

The invention relates to the technical field of sewage treatment, and in particular to a treatment process and a treatment system of lithium battery waste liquid. The treatment process comprises the following steps: (1) electrochemical treatment: introducing the lithium battery waste liquid into an electrochemical treatment unit for electric flocculation reaction; (2) A2 / O treatment: introducing the electrochemically treated lithium battery waste liquid into an anaerobic tank, an anoxic tank and an aerobic filter device in sequence, wherein the aerobic filter device is an MBR (Membrane Biological Reactor) or consists of an aerobic tank and a secondary settling tank which are communicated with each other; (3) denitrification and nitration: introducing the lithium battery waste liquid subjected to the A2 / O treatment into a denitrification tank for denitrification reaction and a nitration aeration biological filter tank for nitration reaction, and then discharging the lithium battery waste liquid. By the adoption of electrolytic flocculation treatment, A2 / O and nitration and denitrification combination process for treatment, the contents of various pollutants in the lithium battery waste liquid are substantially reduced, so that the final discharge standard meets the requirements of GB30484-2013.
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Description

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a treatment process for lithium battery waste liquid and a treatment system thereof. Background technique

[0002] Lithium batteries are one of the most popular batteries in the 21st century, widely used in video cameras, mobile phones, notebook computers, portable measuring instruments, electric vehicles, etc. In the production process of lithium batteries, a large amount of cleaning wastewater will be generated. The cleaning wastewater contains a large amount of organic pollutants and cannot be discharged directly. It needs to be treated before it can be discharged. Therefore, the treatment process of lithium battery waste liquid has also emerged as the times require. As for the treatment process of lithium battery waste liquid, the prior art still uses Fenton's reagent as an important link.

[0003] The invention patent with the patent application number 201610057373...

Claims

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