Abstract:

The dynamic model and process of bubble particle collision in the contact zone of dissolved air flotation (DAF) has been analyzed. The effects of the parameters, such as the sizes of particles and bubbles,water temperature, particle density, etc. on the collision efficiency are discussed emphatically. It shows that deeper understanding about the mechanism of air flotation water purification is obtained. It is beneficial to the design and operation of the DAF technology.

Key words: air flotation, contact zone, air bubble, particle, collision efficiency

摘要：

对气浮接触区气泡-颗粒碰撞过程及其动力学模型进行了深入分析，并重点讨论了颗粒尺寸、气泡尺寸、水温、颗粒密度等参数对碰撞效率的影响。通过此项研究，可进一步加深对气浮净水机理的认识，对实际气浮净水工艺的设计、运行有较强的指导意义。

关键词: 气浮, 接触区, 气泡, 颗粒, 碰撞效率

CLC Number: 

• TG174.2