光催化氧化联合MBR处理有机废水研究

Photocatalytic Oxidation and MBR Treatment of Organic Wastewater

摘要: 光催化联合膜生物反应器(MBR)技术对有机废水具有良好的处理效果，近年来得到广泛应用。本论实验研究了pH、TiO₂投加量、光照时间等反应条件对光废水中有机物降解效果的影响。结果表明，当pH 10.0，TiO₂投加量为350~450 mg∙L⁻¹时，混凝对有机废水的SS、色度以及COD的去除率分别为70.4%，73.9%，97.7%和37.9%。采用TiO₂-好氧膜生物反应器组合工艺处理有机废水，出水COD、NH₄-N、SS、等指标均可达到《浙江省地方标准水污染物排放限值》的一级标准。

Abstract: Photocatalytic oxidation combing membrane bioreactor (MBR) technology has a good treatment effect on organic wastewater, and can reach the reuse standard, which has been widely used in recent years. The effect of pH, TiO₂ dosage and light application time on the photocatalytic result was studied. The results indicated that the average removal rates of SS, color, and CODcr from or-ganic wastewater by coagulation were 70.4%, 73.9%, 97.7%, and 37.9%, respectively when the pH and TiO₂ dosage was 10 and 350 - 450 mg∙L⁻¹. The TiO₂-aerobic membrane bioreactor combination process is used to treat organic wastewater, and the effluent COD, NH₄-N, SS, and other indicators can meet the first-level standard of Zhejiang local standard water pollutant emission limit value.