Recovery and treatment method of waste gas and wastewater in the production of lithium-ion battery materials
A lithium-ion battery, recycling and processing technology, applied in separation methods, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of waste of raw materials, environmental pollution, etc., and achieve the effect of reducing treatment costs
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Embodiment 1
[0036] Pass the exhaust gas containing ammonia, carbon dioxide, organic molecules and other components generated during the preparation of lithium iron phosphate materials into the reactor, and use 0.1M Na 2 CO 3 The hydrochloric acid solution calibrated by the aqueous solution is used as the titrant, and the methyl red solution is used as the indicator to measure the ammonia content of the 1# wastewater after absorbing the exhaust gas. The measured ammonia content is 1.82M; The two sides are passed into the reactor, and the organic molecules in the wastewater are floated to the water surface through the action of bubble jacking, bubble wrapping and air particle adsorption; at the same time, 78.4g H 2 C 2 o 4 2H 2 O is slowly added to the reaction kettle, and after the reaction is completed, continue air flotation for 2 hours, remove the suspended matter on the water surface, and then take out the sediment from the lower corner of the side of the reaction kettle, wash and h...
Embodiment 2
[0040] The exhaust gas containing ammonia, carbon dioxide, organic molecules and other components generated during the preparation of lithium manganese iron phosphate materials is simultaneously passed into the reactor, and the ammonia gas and carbon dioxide undergo a chemical reaction to form ammonium bicarbonate or ammonium carbonate precipitation. The air pump passes air into the reaction kettle from both sides of the bottom of the reaction kettle, and floats the organic molecules in the wastewater to the water surface through the action of air bubble jacking, air bubble entrainment and air particle adsorption; after the reaction is completed, continue air flotation for 3 hours, and the Take out the suspended matter on the water surface, then take out the sediment from the lower corner of the side of the reaction kettle, wash and heat and dry to obtain high-purity ammonium carbonate or ammonium bicarbonate by-products, and the obtained graded and purified water is used for th...
Embodiment 3
[0042] Put the wastewater containing sulfate ions, hydroxide ions, ammonium ions, and sodium ions generated during the preparation of nickel hydroxide, cobalt, and manganese into the reactor, and then add barium hydroxide to it, and the precipitate will be formed after the reaction is completed. The material is taken out from the lower corner of the side of the reaction kettle, and the barium sulfate by-product with high purity is obtained after washing and drying; then the waste gas containing carbon dioxide and organic molecules generated during the sintering and preparation of nickel cobalt lithium manganese oxide material is passed into the reaction kettle, and at the same time, it is used The air pump passes air into the reaction kettle from both sides of the bottom of the reaction kettle, and floats the organic molecules in the wastewater to the water surface through the action of air bubble jacking, air bubble entrainment and air particle adsorption; after the reaction is...
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