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浙江大学开发出一种从涤纶碱减量废水中回收对苯二甲酸的新方法及装置。碱减量工艺废水经预处理后从中和反应器的顶部以射流进料方式送入;同时将含有对苯二甲酸固相颗粒的循环浆料从中和反应器的上部以旋流进料方式送入;循环酸水同时从中和反应器下部的不同高度处送入,调节中和反应器中部的pH值为7~9、底部的pH值为2~4;对中和反应器的底
Zhejiang University has developed a new method and apparatus for the recovery of terephthalic acid from the reduction of polyester base wastewater. The alkali reduction process wastewater is fed as a jet stream from the top of the neutralization reactor after the pretreatment; meanwhile, the circulating slurry containing the terephthalic acid solid phase particles is sent as a swirling feed from the upper part of the neutralization reactor Into the circulating acid water at the same time from the bottom of the neutralization reactor at different levels into the middle of the reactor and adjust the pH of 7 to 9, the bottom of the pH value of 2 to 4; and the bottom of the reactor