摘要
针对处理钛表面蚀刻草酸废液难度大、工艺复杂等特点,提出了膜回用工艺。膜技术高效实现了草酸废液的资源化利用。工程采用特种纳滤膜,运行6个月。结果表明:系统性能稳定,达到企业回用草酸的要求,即草酸回用液中草酸质量浓度超过1.5%,总钛含量<300 mg/L,回用率在65%以上。纳滤浓缩液采用钙法沉降,板框压滤机过滤后排入市政管网。
At present,the membrane reuse process has been put forward in view of the difficulty and complexity of the treatment of oxalic acid waste solution etched on titanium surface.The membrane technology realized the resource utilization of waste oxalic acid efficiently.This project adopts special nanofiltration membrane,and the operation for 6 months shows that the system has stable performance and meets the requirements of enterprise recycling oxalic acid,that is,the mass concentration of oxalic acid in the recycling solution is more than 1.5%,the total titanium content is less than 300 mg/L,and the recycling rate is more than 65%.The concentrated solution of nanofiltration is settled by calcium method,filtered by plate and frame filter press and then sent to municipal pipe network.
作者
韦震
康轩齐
贾波
武佳
冯庆
Wei Zhen;Kang Xuanqi;Jia Bo;Wu Jia;Feng Qing(Xi′an Taijin Industrial Eletrochemical Technology Co.,Ltd,Xi’an 710016,China)
出处
《环境工程》
CAS
CSCD
北大核心
2023年第S02期195-197,共3页
Environmental Engineering
关键词
钛蚀刻
草酸
纳滤膜
资源化
titanium etching
oxalic acid
nanofiltration membrane
resource recovery
作者简介
第一作者:韦震(1991-),硕士,工程师,主要研究为电化学及水处理技术。826698343@qq.com;通信作者:冯庆(1981-),博士,教授级高工,主要研究为电催化氧化电极材料开发及水处理技术。wz18729483637@126.com
