摘要
采用光催化膜分离耦合工艺处理混凝废水。首先通过相转化法自制二氧化钛(TiO_2)改性聚偏氟乙烯(PVDF)光催化超滤膜;然后通过傅里叶红外光谱(FTIR)、扫描电子显微镜(SEM)、接触角测试仪、自制光催化膜分离工艺装置对膜结构、膜表面亲疏水性以及膜光催化和过滤性能进行测试分析;并通过改变进水流速、溶液pH,分析光催化膜分离工艺处理混凝废水的特点。研究结果表明,TiO_2成功嵌入到PVDF膜中,改性后膜接触角减小,具有一定的的光催化性能和更好的过滤性能。在混凝废水的处理过程中,进水流速主要影响膜通量,pH主要影响截留率,但光催化对膜分离过程的改进效果并不受工艺参数的影响。
Photocatalytie membrane separation process was used to treat coagulation wastewater. At first, the TiO2 modified poly （vinyl fluoride） （PVDF） photocatalytle ultrafiltration membrane was prepared by phase inversion method. The structure, surface hydrophilic and hydrophobic, photocatalytic and filtration performance were by fourier infrared spectroscopy （FTIR）, scanning electron microscopy （SEM）, contact angle meter and photocatalysis-membrane separation coupling devices. And the characteristics of the photocatalytic membrane separation process were analyzed by changing the influent rate and pH. Results indicated that： TiO2 was embed in the PVDF membranes successfully, the modified membrane had smaller contact angle, and the membrane had catalytic performance and better filtration performance. In the treatment of coagulation wastewater, the influent flow rate mainly affected the membrane flux, and the pH value mainly affected the rejection rate, but the photocatalytic improvement of the membrane separation process was not affected by the process parameters.
出处
《水处理技术》
CAS
CSCD
北大核心
2017年第1期72-76,共5页
Technology of Water Treatment
基金
国家自然科学基金项(21307146)
广东省产学研合作项目(2015B090901018)
广州市珠江科技新星专项(201506010024)
关键词
甲基橙
混凝
光催化
膜分离
methyl orange
coagulation
photocatalysis
membrane separation
