摘要
对聚偏氟乙烯(PVDF)中空纤维膜进行共混改性,制备出纳米二氧化锆(ZrO_2)改性的中空纤维膜。通过对改性膜和未改性膜的纯水通量、机械性能、微观结构、接触角、含水率、孔隙率等参数进行表征,并使改性膜和未改性膜组件应用于膜生物反应器处理生活污水,对比了两者的出水水质,并对其膜过滤过程中的阻力进行分析。结果表明:两个膜组件应用于膜生物反应器污水处理效果良好,对COD和BOD5的去除达到90%以上,对氨氮的去除达到80%以上,对TN和TP的去除达到70%以上。与未改性膜相比,改性膜的膜通量更大,阻力更小,表明纳米ZrO_2可明显改善PVDF中空纤维膜的亲水性,提高其抗污染能力。
Polyvinylidene fluoride （PVDF） microfiltration membrane was modified using nano-ZrOz in order to prepare nano-ZrOz hollow fiber membrane. The membranes characteristics such as water flux,mechanical strength, microstructure, contact angle, moisture content, porosity, etc. were investigated. The modified membrane and the original membrane both were applied for domestic sewage treatment,the effluent quality and the membrane filtration resistance were compared. The results showed that both membrane bioreactors had good effect on the domestic sewage treatment. Moreover,the modified membrane has showed removal rates more than 90%, 90%, 80%, 70% and 70% for the COD,BODs ,ammonia nitrogen,TN and TP,respectively. The modified membrane compared to the original PVDF membrane had a bigger flux and smaller resistance which may indicate that the nano-ZrO2 could improve the hydrophilicity and the anti-pollution capacity of PVDF hollow membrane.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2016年第10期67-71,78,共6页
Environmental Pollution & Control
基金
国家自然科学基金资助项目(No.41373083)
深圳市战略新兴产业发展专项资金资助项目(No.JCYJ20130401154122777)
中国地质大学(武汉)巨正环保基金资助项目(No.201203905)
作者简介
冯群，男，1987年生，硕士研究生，研究方向为水处理。
通讯作者
