PTA (Purified Terephthalic Acid) mother liquor wastewater deep treatment and cobalt-manganese recovery system

Abstract

The invention relates to a PTA (Purified Terephthalic Acid) mother liquor wastewater deep treatment and cobalt-manganese recovery system. The PTA mother liquor wastewater deep treatment and cobalt-manganese recovery system comprises a mother liquor filter, a first-stage filtration and feeding tank, an iron removal filter, a second-stage filtration and feeding tank and a cobalt-manganese filter which are sequentially connected, wherein an lye tank is arranged between the first-stage filtration and feeding tank and the second-stage filtration and feeding tank. According to the PTA mother liquor wastewater deep treatment and cobalt-manganese recovery system, a staged treatment is adopted, good solid removal effect, the cobalt removal effect and the manganese removal effect are achieved, the resources are reasonably utilized and the sewage from the final stage is in line with discharge standards.

Description

technical field [0001] The invention relates to a waste water treatment system, in particular to a waste water recycling and treatment system. Background technique [0002] In the prior art, for the treatment of PTA mother liquor, some are simply filtered to remove impurities and then directly discharged, which does not make reasonable use of resources, but also pollutes the nature and brings irreversible damage to the ecological environment. Most of the recovery processes are used to treat the PTA mother liquor, but these recovery processes are relatively simple, and cannot precipitate PA and PT solids well, and in the subsequent treatment process, the treatment of metal ions is not in place, and the treatment effect is not obvious. The recovery rate is very low, and the treated wastewater has not yet met the discharge standard. SUMMARY OF THE INVENTION [0003] Purpose of the invention: the purpose of the present invention is to overcome the deficiencies in the prior ar...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, for the treatment of PTA mother liquor, some are directly discharged after simple filtration to remove impurities, which has neither rational utilization of resources nor pollution Harsh nature and bring irreversible damage to the ecological environment

Most of them adopt recovery process to process PTA mother liquor, but these recovery processes are relatively simple and cannot precipitate PA and PT solids well, and in the subsequent process, the treatment of metal ions is not in place, and the treatment effect is not obvious. Cobalt manganese The recovery rate is very low, and the treated wastewater has not yet reached the discharge standard

Images