石油裂解废水泛红原因分析及防治方法研究

从废水水质常规分析、发射光谱分析、有机污染物分析等项目入手，找出了武汉石油化工厂废水泛红的原因是：在曝气条件下，水中溶解的亚铁离子氧化生成三价铁离子，并以稳定的棕红色铁氧化物溶胶形式存在于水中，结果引起座水泛红。研究了曝气速率、pH值、溶解氧浓度和污泥浓度对水中亚铁浓度和总铁浓度的影响。结果表明，维持溶解氧浓度在饱和浓度的50％左右，污泥浓度大于2g／L，可有效防治废水泛红。

Investigation on Mechanism and Preventing Measures of Waste Water Blushing in Wuhau Petroleum Refining Factory

The mechanism of blushing of petroleum refining waste water is investigated in this paper bymeans of analysis of normal waste water quality as well as emission spectrum,GC-MS-COM and IRfor organic compounds occurring in waste water. The waste water blushing is ascribed to production ofred ferric hydroxide colossal in waste water as Fe(2 ) ion is oxidized into Fe(3 ) ion under aeration condi-tion. Effect of aeration rate,concentration of dissolved oxygen and cycling amount of activated sludgeon changes of concentration of both Fe(2 ) and total ferrous ions (on basis of Fe(2 ) form) were studied.It has been shown that blushing can be prevented efficiently by keeping dissolved oxygen in waste wa-ter in A/O pools less than 50% of saturated concentration and by keeping the cycling amount of acti-vated sludge not less than 2g/L.