本文介绍了应用气浮法分离工业废水中的重金属的一种方法.在含重金属的废水中加入氢氧化钠水溶液,控制pH 值在7—10之间,使重金属离子成为非水溶性氢氧化物沉淀,在不另加任何化学药剂的情况下,通入压力溶气水,沉淀随同气泡一起浮于水面而被排除,处理后的废水中重金属离子的含量能达到或低于国家规定的排放标准. In this paper, a method for separating heavy metals in industrial wastewater by air flotation is introduced.Aqueous sodium hydroxide solution is added to the wastewater containing heavy metals to control the pH value between 7 and 10 to make the heavy metal ions into water-insoluble hydroxide Precipitation, in the absence of any additional chemical agents, the pressure of dissolved water access, precipitation along with the bubbles floating on the water and be excluded, the treated wastewater content of heavy metal ions can reach or fall below the national emission standards .