Membrane distillation desalination method and apparatus thereof

• Main Authors: LAN QINGQUAN, FAN YIQUN, XIONG FENG, QIU MINGHUI
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2016
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a membrane distillation desalination separating technology by employing a multichannel ceramic membrane. By using an organic matter surface grafted modification method, the hydrophilic-hydrophobic property on the surface of the multichannel ceramic membrane is regulated and controlled, and the ceramic membrane with good hydrophobicity is prepared. The modified ceramic membrane is used for a desalination process of the membrane distillation, water molecules in the raw material liquid permeate the membrane holes as a steam form, wherein, substances such as inorganic salt and macro-molecules are intercepted, so that the separating and purifying effects are achieved, the treating capacity of the multichannel ceramic membrane is obviously higher than that in the membrane distillation process of the common organic membrane material, and the desalination rate is more than 99.9%. During the membrane distillation desalination process, the usage of the multichannel ceramic membrane material pro