Regeneration method and system for emulsion containing heavy metal ions

Abstract

The invention provides a regeneration method and system for an emulsion containing heavy metal ions. The regeneration method for the emulsion containing the heavy metal ions comprises the following steps: (1) performing pretreatment on a waste emulsion: performing sedimentation treatment on the waste emulsion, and performing filtration on the supernatant obtained after the sedimentation to removesolid impurities; and (2) performing solid-phase extraction on the pre-treated waste emulsion by adopting an extraction agent to remove the heavy metal ions in the waste emulsion. The regeneration method for the emulsion containing the heavy metal ions provided by the invention can restore the emulsion which loses a lubricating effect to a stable and uniform emulsified state, and the emulsion canbe recycled.

Description

technical field [0001] The invention belongs to the field of waste emulsion treatment, in particular to a method and system for regenerating emulsion containing heavy metal ions. Background technique [0002] In industries such as machining and steel wire drawing, emulsions are often used as lubricants, and mechanical parts and steel wires contain a large amount of heavy metal ions such as copper and zinc. These ions will accumulate in the emulsion for a long time during metal drawing or cutting. The uniformity of the oil-water two-phase in the emulsion is destroyed, the stability and uniformity of the emulsion decrease, and finally the lubrication effect is lost. Therefore, the emulsion will lose its effect after being used for a period of time, and a new lubricant needs to be replaced. In the prior art, the lubricant is often discarded directly after it fails, which will cause waste of lubricant and environmental pollution. Therefore, , it is necessary to develop a regene...

AI Technical Summary

Problems solved by technology

[0002] In industries such as machining and steel wire drawing, emulsions are often used as lubricants, and mechanical parts and steel wires contain a large amount of heavy metal ions such as copper and zinc. These ions will accumulate in the emulsion for a long time during metal drawing or cutting. The uniformity of the oil-water two-phase in the emulsion is destroyed, the stability and uniformity of the emulsion decrease, and finally the lubrication effect is lost

Therefore, the emulsion will lose its effect after being used for a period of time, and a new lubricant needs to be replaced. In the prior art, the lubricant is often discarded directly after it fails, which will cause waste of lubricant and environmental pollution. Therefore, , it is necessary to develop a regeneration method for the emulsion lubricant, so that the invalid lubricant can return to the stable state of uniform emulsification after treatment, and can be used again as a new lubricant, so that the emulsion can be recycled and the emulsification can be improved. Improve the utilization rate of liquid, save raw materials and reduce environmental pollution

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