Waste sulfuric acid recovery treatment method

• Main Authors: LIU JIAN, YAO SHIMING
• Format: Patent
• Language: Chinese; English
• Published: 08.07.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to the field of waste sulfuric acid treatment processes, in particular to a waste sulfuric acid recovery treatment method, which comprises the following steps: diluting waste sulfuric acid, adding a catalyst, carrying out ultrasonic treatment and stirring treatment for 5-20 hours under an illumination condition, filtering, adding adsorption resin into filtrate, adsorbing for 20-25 hours, filtering, and adjusting the concentration to obtain recovered sulfuric acid, by utilizing the catalytic degradation and adsorption effects of the catalyst and the resin, anthraquinone dye and other organic impurities in the waste sulfuric acid can be purified, the chromaticity is reduced, the waste sulfuric acid can be used as a crude chemical raw material after being recycled, the treatment cost of the waste sulfuric acid is reduced, and sulfuric acid resources are fully utilized. 本发明涉及废硫酸处理工艺领域，具体为一种废硫酸回收处置方法，将废硫酸稀释后，加入催化剂，在光照条件下，超声并搅拌处理5-20h，过滤，向滤液中加入吸附树脂，吸附20-25h，过滤后进行浓度调整，得到回收硫酸，本发明利用催化剂和树脂的催化降解及吸附