摘要
以某化工工艺废水的超滤出水为原水,采用耐高温反渗透膜进行处理,考察了操作压力、废水pH、膜面流速及废水总铁质量浓度对耐高温反渗透膜产水通量及脱盐率(以电导率减小率计,下同)和TOC去除率的影响。实验结果表明,在操作压力为0.24 MPa、废水pH为7.60、膜面流速为2.0 m/s的最佳条件下运行4 200 min后,产水通量衰减约73%,反渗透系统的脱盐率为95%～97%,TOC去除率为83%～95%,出水电导率在50μs/cm左右,出水TOC为21～23 mg/L。
The ultrafiltration effluent from a chemical plant was treated by high temperature-resistant reverse osmosis membrane process.The factors affecting permeation flux,desalination rate(calculated as the decrease rate of conductivity) and the TOC removal rate,such as operation pressure,wastewater pH,velocity on the membrane surface and mass concentration of total iron in wastewater,were studied.The experimental results show that:Under the optimum conditions of operation pressure 0.24 MPa,wastewater pH 7.60,velocity on the membrane surface 2.0 m/s and running time 4 200 min,the permeation flux is decreased by 73%,the desalination rate is 95%-97%,the TOC removal rate is 83%-95%,the conductivity and TOC of the effluent are about 50μs/cm and 21- 23 mg/L respectively.
出处
《化工环保》
CAS
CSCD
北大核心
2010年第2期125-129,共5页
Environmental Protection of Chemical Industry
关键词
反渗透膜
高温
操作条件
废水处理
reverse osmosis membrane
high temperature
operation condition
wastewater treatment
