A device applied to the treatment of heavy metal ions in PTA wastewater

Abstract

The invention discloses a device applied to the treatment of heavy metal ions in PTA wastewater, belonging to the field of catalyst recovery carriers, and a device applied to the treatment of heavy metal ions in PTA wastewater. Cobalt ions and manganese ions form stable complexes, which are absorbed by the resin and enriched, which can be recycled and reused, while the wastewater containing cobalt and manganese is purified, thereby avoiding heavy metal pollution. It can complete the cycle of catalyst adsorption, individual enrichment and recovery of resin pieces, heating in water bath, resin regeneration, and dispersing into multiple individual resin pieces. The adsorption capacity can be improved by modifying the adsorption resin used for adsorption. , more cobalt and manganese ions in PTA wastewater can be recovered, and the service life is longer. Not only can reduce the discharge of heavy metal ions in wastewater, but also save operating costs.

Description

technical field [0001] The invention relates to the field of catalyst recovery carriers, and more particularly, to a device applied to the treatment of heavy metal ions in PTA wastewater. Background technique [0002] The production process of PTA will produce a large amount of wastewater containing high concentrations of heavy metal ions, especially manganese and cobalt. Once it is directly discharged into the natural environment, it will easily cause serious environmental pollution. Therefore, it is usually necessary to treat the above-mentioned wastewater. In the presence of PTA, the group can form stable complexes with cobalt ions and manganese ions, which can be adsorbed by the resin and enriched. After the following analysis steps, it can be recycled and reused, while the wastewater containing cobalt and manganese is purified, thereby Avoid heavy metal pollution. [0003] In the existing production technology, imported resin is usually used to complete the above-menti...

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Problems solved by technology

[0003] In the existing production technology, imported resins are usually selected to complete the above wastewater treatment work, which will greatly increase the production cost. At the same time, the effective adsorption rate of the above resins is low, and the adsorption effect is poor, and the above resins are prone to rapid adsorption during the adsorption process. Aging, extremely short service life, combined with the above shortcomings, although the resins in the prior art can play a certain role in the adsorption of heavy metal ions during use, but the adsorption efficiency is low, it is difficult to meet expectations, and at the same time, the single cost of the resin used for adsorption is relatively high , and cannot be reused many times, which greatly increases the treatment cost of PTA wastewater and restricts the development of PTA industry

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