加压溶气气浮空气组成的理论研究

Research on Model of Air Composition in Pressure Saturators

多年来通过对加压溶气气浮装置的检测和性能研究可知 ,气浮技术在给排水处理中应用越来越广泛 ,发挥的作用越来越大 ,但对于它的理论研究尚显不足 ,为此重点就其溶气系统理论性问题 ,按照亨利定律的原则 ,对压力溶气罐的溶解空气的组成进行研究 .研究的重点是两种数学模型 :第一是压力罐从运转开始 ,直到最终罐内气水平衡 ,罐内空气随时间变化而变化的理论模型 ;第二是空气分子的摩尔平衡 ,研究压力罐内空气中氮和氧的组成比例 。

This paper deals with the model of the air composition in pressure saturators used for dissolved air flotation.Two mathematical models are represented:a kinetic model describing air composition in staurator with time from satrt-up to eventual equilibrium;a model for only predicting the saturator air composition once equilibrium is reached.Both derivations are based on mole balances for the two major components of atmospheric air ,nitrogen and oxygen,and the equilibrium between saturator air and outflowing water by Henry's law.