Studies on seawater desalination by direct contact membrane distillation (DCMD)
To understand the process of product pure water from seawater desalination by direct contact membrane distillation (DCMD), there type of different depth membrane modules were set up to studied the heat transfer and mass transfer mechanism on membrane distillation process. Nine types of commercially available membranes were used for DCMD system to investigate the effect of membrane difference on the permeation flux and conductivity. The effect of different membranes was discussed under the different operation parameters including temperature difference change, feed and permeate flow rate change, NaCl concentration change. The limiting permeate flux value of PTFE pore size 0.22pm membrane was observed for 25.6L/m2hr at the conditions: hot side inlet temperature 60℃, cold side inlet temperature 20℃, flow rate 1.6L/min, NaCl concentration 3.5% for module 3. And the permeation conductivity values were constant under 8μS/cm for all the scale-up experimental conditions. A preliminary mathematical model was build to study the mass and heat transfer process, the model calculating results shown agreement to experimental results.
Direct contact membrane distillation seawater desalination mathematical model heat and mass transfer permeate fluz and conducitvity
Ke He Ho Jung Hwang Myung Wu Woo Il Shik Moon
Department of Chemical Engineering, Sunchon National University, #315 Maegok Dong, Suncheon 540-742, Chonnam, Republic of Korea
国际会议
2009 Beijing International Environmental Technology Conference(2009北京国际环境技术会议暨第五届“中、德、波环境技术研讨会)
北京
英文
746-756
2009-10-16（万方平台首次上网日期，不代表论文的发表时间）