Abstract:

The technical situations of PTA wastewater treatment in China and overseas are described. The influential factors, such as pH, reaction time and the dosage of oxidizing agent, on the removal rates of chroma and COD have been investigated systematically. The operation conditions of the wastewater treatment are optimized through experiments. The COD_Cr of the PTA water has finally been reduced to 420 mg/L with lower cost and convenient operation. Then, the water goes to the biodegradation system, being treated for lowering its COD to less than 150 mg/L. This method has some merits, including convenient operation, reasonable technical process, ideal treatment effect, operable conditions and friendly environment.

Key words: terephthalic acid, catalysis, oxidation, wastewater treatment

摘要：

叙述了PTA废水国内外处理技术的现状。试验研究了复合催化氧化法处理PTA废水的效果，系统地考察了pH、反应时间和氧化剂投加量对COD、色度去除率的影响，优化了废水处理的操作条件，最终以较低的成本和方便的操作将PTA混合污水的COD降至420mg／L左右，进一步用生物降解系统进行处理可使其COD降至150mg／L以下。本方法操作简单，工艺流程合理，处理效果好，可操作性强，环境友好。

关键词: 对苯二甲酸, 催化, 氧化, 废水处理

CLC Number: 

• X703.1