Research Progress and Enhancement of MDC Process

Yu Qin Xiong; Ting Peng; Zai Feng Shi

doi:10.4028/www.scientific.net/AMR.955-959.2530

Paper Titles

Removal Effect of Ditch Pond Wetlands on Non-Point Source Pollutants from Agricultural Drainage
p.2513

Emergency Response Technology Using Powdered Activated Carbon for Sudden Water Pollution Accidents with Petroleum Pollutants
p.2517

Study on the Influencing Factors of V-Doped TiO₂ Photocatalysis
p.2521

Integrated Processes of Anoxic/Oxic Bioreactor and Artificial Wetland for Rural Domestic Wastewater Treatment
p.2526

Research Progress and Enhancement of MDC Process
p.2530

Acetylation of Pomelo Peel for the Production of Oil Materials
p.2534

Effect of Paper Mill Sludge on Adsorption and Desorption of Cd(II) and Pb(II) in Paddy Soils
p.2539

Study of Adsorption of Pb(II) from Aqueous Solution onto Na-Bentonite/Poly AMPS/AA/AM Composite
p.2546

Study on Removing Ammonium Nitrogen from Wastewater Using Magnesium Hydroxide
p.2550

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 955-959Research Progress and Enhancement of MDC Process

Research Progress and Enhancement of MDC Process

Abstract:

Membrane distillation-crystallization (MDC) is an appropriate process which can completely recover solutes and solvents from high concentration brine under modest operation conditions, and no emissions from system into the environment. In present article, factors restricting the development of membrane distillation-crystallization such as the performance of membrane material and the mass transfer/transfer efficiency were introduced, the process enhancement and sediment control measures of crystallization were reviewed. To reinforce mass and heat transfer efficiency in the process of hollow fiber membrane distillation-crystallization, bubbles were suggested to be added into feed side to format gas-liquid two-phase flow. The secondary flow generated by the bubble would not only substantially increase the maximum shear stress on membrane surfaces, prevent deposition of pollutants, but also could effectively reduce the boundary layer polarization phenomena at the same time. And most importantly, bubbles would not become nucleus for crystal generation of supersaturated solution, and bubbles are easily detached from the solution.