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臭氧微气泡深度处理染料废水生化出水

Keywords: 臭氧,气泡,传质,比表面积,停留时间

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Abstract:

采用臭氧氧化法对某厂染料废水生化出水进行深度处理,考察了废水初始pH值和臭氧气泡大小对废水处理效果的影响,研究了臭氧微气泡对气液传质的影响。结果表明,在pH2.5~11范围内,废水初始pH值越大,处理效果越好;加载微孔膜片后,臭氧气泡粒径变小,增大了臭氧的传质比表面积,延长了臭氧气泡在反应柱内的停留时间,强化了传质效果,处理废水的臭氧利用率可增大10%~30%,强化了臭氧氧化作用。加载5μm孔径的膜片相比无膜片的情况,COD去除率提高了近30%,TOC去除率提高了16%。

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