期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 172, 期 -, 页码 285-295出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2016.08.024
关键词
Fouling; Reverse osmosis concentrate; Transfer mechanism; Vacuum enhanced direct contact membrane distillation
资金
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE) [4.1.12.11/12]
The application of vacuum to direct contact membrane distillation (vacuum enhanced direct contact membrane distillation, V-DCMD) removed condensable gasses and reduced partial pressure in the membrane pores, achieving 37.6% higher flux than DCMD at the same feed temperature. Transfer mechanism and temperature distribution profile in V-DCMD were studied. The empirical flux decline (EFD) model represented fouling profiles of V-DCMD. In a continuous V-DCMD operation with moderate temperature (55 degrees C) and permeate pressure (300 mbar) for treating wastewater ROC, a flux of 16.0 +/- 0.3 L/m(2) h and high quality distillate were achieved with water flushing, showing the suitability of V-DCMD for ROC treatment. (C) 2016 Elsevier B.V. All rights reserved.
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