Metal chemical polishing waste liquid renewable resource utilization treatment process

Abstract

The invention provides a metal chemical polishing waste liquid renewable resource utilization treatment process. Operation is completed through cooperation of an outer frame, a cover body, a filteringunit, a sedimentation unit, a discharging opening and a sealing block. The problems that after waste residues are precipitated at the bottom, when waste liquid is discharged, part of precipitates canbe discharged along with the surging waste liquid, a small amount of waste residues still exist in the discharged polishing waste liquid, a small amount of waste residues are still difficult to separate from the waste liquid even if the waste residues are precipitated and discharged multiple times, and the overall working efficiency is reduced due to multiple times of precipitation can be solved.

Description

technical field [0001] The invention relates to the technical field of utilization of waste liquid regeneration resources, in particular to a metal chemical polishing waste liquid regeneration resource utilization treatment process. Background technique [0002] The source process of waste acid for chemical polishing of aluminum surface: chemical polishing working fluid, temperature 95 to 105 degrees, chemical polishing time ranging from 30 seconds to 10 minutes, the proportion of working fluid is phosphoric acid 15% to 85%, sulfuric acid 15% to 85%, environmental brightener 2% to 8%, nitric acid 0.3% to 0.8%, which are the main components of environmental polishing liquid. [0003] These polishing waste liquids can be recycled after being produced. During the recycling process, waste slag impurities will be generated during polishing, and these impurities will be discharged synchronously with the polishing waste liquid. Therefore, the waste slag impurities need to be filter...

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Problems solved by technology

[0005] In order to solve the above problems, the present invention provides a metal chemical polishing waste liquid recycling resource utilization process, which can solve the problem that when the waste liquid is discharged after the waste residue is deposited at the bottom, part of the sediment will be discharged along with the surging waste liquid. There is still a small amount of waste residue in the discharged polishing waste liquid. Even if it is discharged through multiple precipitations, there is still a small amount of waste residue that is difficult to separate from the waste liquid. Multiple precipitations will also lead to problems such as a decrease in overall work efficiency.

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