Holt P K, Barton G W, Mitchell C A
Department of Chemical Engineering, University of Sydney, NSW 2006, Australia.
Water Sci Technol. 2004;50(12):177-84.
Electrocoagulation removes pollutant material from water by a combination of coagulant delivered from a sacrificial aluminium anode and hydrogen bubbles evolved at an inert cathode. Rates of clay particle flotation and settling were experimentally determined in a 7 L batch reactor over a range of currents (0.25-2.0 A) and pollutant loadings (0.1-1.7 g/L). Sedimentation and flotation are the dominant removal mechanism at low and high currents, respectively. This shift in separation mode can be explained by analysing the reactor in terms of a published dissolved air flotation model.
电凝法通过牺牲铝阳极提供的凝结剂和在惰性阴极产生的氢气泡的组合来去除水中的污染物。在7升间歇式反应器中,通过实验测定了一系列电流(0.25 - 2.0 A)和污染物负荷(0.1 - 1.7 g/L)下粘土颗粒的浮选和沉降速率。在低电流和高电流下,沉降和浮选分别是主要的去除机制。通过根据已发表的溶解空气浮选模型分析反应器,可以解释这种分离模式的转变。