温度两级厌氧反应系统对精对苯二甲酸废水的处理  

Treatment of purified terephthalic acid wastewater using temperature staged anaerobic digestion system

作　　者：马凯丽[1] 李相昆[1] 张杰[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090

出　　处：《环境工程学报》2018年第2期482-487,共6页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51478138);国家高技术研究发展计划(863)项目(2012AA063503)

摘　　要：通过分别提高精对苯二甲酸(PTA)生产废水中不同组分的含量,考察了高温-中温两级厌氧系统对4种PTA废水水质的适应情况。研究结果表明,当苯甲酸、乙酸以及对苯二甲酸含量增加时,废水经过温度两级厌氧系统处理,有机物依然能得到高效稳定的去除,且处理后的出水COD含量低于100 mg·L^(-1),COD去除率则稳定在95%以上。而对甲基苯甲酸含量的提升则对系统的运行效果影响显著,经过两级厌氧处理,依然有约25%的对甲基苯甲酸未被降解。说明在PTA废水的厌氧处理中,对甲基苯甲酸的降解是提升系统总有机物去除效率的关键,也是我们今后研究工作的重点。In this study,we investigated the operation effects of thermophilic-mesophilic staged anaerobic system in treating four different purified terephthalic acid wastewater by changing the organic composition content.The results revealed that all the organics could still be high-efficiently removed when the concentration of benzoate,acetate and terephthalic acid increased.The COD in effluent was as low as 100 mg·L^-1,while the COD removal efficiency was stabled at over 95%.However,the increase of p-toluic acid concentration made an obvious influence on the overall operation,there was still 25% p-toluic acid left in the effluent after system treatment.Therefore,the degradation of p-toluic acid was believed one of the most critical factor for the promotion of overall organics removal efficiency,which will also be our emphasis to solve in the following research.

关 键 词：精对苯二甲酸废水 高温-中温 两级厌氧 水质变化 对甲基苯甲酸 

分 类 号：X703.1[环境科学与工程—环境工程]