UV/TiO2光催化氧化处理鲁奇废水生化出水的试验研究

摘要

采用UV/TiO2反应体系对鲁奇废水生化出水进行了光催化氧化试验,考察了pH、TiO2投加量、反应时间和外加H2O2对CODCr去除率的影响.结果表明:中性及酸性条件下更有利于UV/TiO2光催化降解鲁奇废水生化出水中的CODCr;在pH值=7和1.0 g/L TiO2投加量条件下,反应4h后,CODCr去除率为61.17％.UV/TiO2反应体系外加一定量H2O2是否会提高其CODCr去除率与具体的反应体系有关.%Photocatalytic removal of CODCr from the biochemical effluent of Lurgi coal gasification wastewater by UV/TiO2 was studied.The main factors affecting the removal rate of CODCr were analyzed,including pH value,TiO2 dosage,reaction time and addition of H2O2.Experimental results showed that the neutral or acidic conditions were favored for the photocatalytic removal of CODCr from the biochemical effluent of Lurgi wastewater by UV/TiO2.Under the conditions that pH value was 7 and TiO2 dosage was 1.0 g/L,the removal rate of CODCr was 61.17％ after 4 hours.The effect of the addition of H2O2 on the removal rate of CODCr depends on the composition of the reaction.