摘要
PTA废水是由对二甲苯(PX)生产PTA过程中产生的排水。废水成分复杂,含大量芳香烃有机物,包括难降解有机物TA和甲基苯甲酸。分析了PTA废水中的芳香烃有机物好氧降解、厌氧降解机理以及TA降解机理。分析结果表明:芳香烃有机物好氧降解速率明显高于厌氧降解速。目前,对于PTA废水处理研究集中在好氧处理和厌氧处理工艺上,重点介绍了PTA废水厌氧、好氧及厌氧-好氧处理的几种工艺及其处理效果。综合投资、能耗、污泥量、操作、处理效率等多种因素,总结出PTA废水处理的最优工艺为厌氧-好氧处理工艺,常用工艺组合包括上旋流厌氧反应器+两级好氧、水解+A/O、两级A/O等。并讨论分析了重金属钴、锰,营养物质N,P,Mg,Fe等以及温度、p H对PTA废水处理效率的影响。同时,展望了PTA废水的研究发展趋势。
Purified Terephthalic Acid （PTA） wastewater contains a large number of aromatic hydrocarbon organic compounds, including refractory organic compounds of TA and methyl benzoic acid. In this article, the mechanisms of aerobic degradation and anaerobic degradation of aromatic hydrocarbons as well as TA degradation in PTA wastewater are analyzed. The rate of aerobic degradation is significantly higher than that of anaerobic degradation. At present, research on PTA wastewater treatment is focused on aerobic treatment and anaerobic treatment proces- ses. Some technologies of aerobic, anaerobic and aerobic-anaerobic treatments as well as their effects are intro- duced. Aerobic-anaerobic treatment is summarized to be the optimal treatment process in comprehensive considera- tion of investment, energy consumption, sludge volume, operation, and processing efficiency. Vortex flow anaerobic reactor plus two-stage aerobic treatment, hydrolysis plus A/O, and two-stage A/O are common combinations. Furthermore, the influences of Co, Mn, nutrients, temperature and pH on the biological treatment of PTA wastewater are discussed. In addition, the development prospect of research trends in PTA wastewater treatment technology is also presented.
作者
乔旭
杜易
郭磊
QIAO Xu DU Yi GUO Lei(Jiangsu Fangyang Water Affairs Co., Ltd., Lianyungang 222000, Chin)
出处
《长江科学院院报》
CSCD
北大核心
2017年第3期20-24,共5页
Journal of Changjiang River Scientific Research Institute
关键词
PTA废水
好氧降解
厌氧降解
生物处理
TA降解
PTA wastewater
aerobic degradation
anaerobic degradation
biological treatment
TA degradation
