催化氧化法处理焦化废水的研究

Studies of Catalytic Oxidation in Treatment of Coking Plant Wastweater

用混凝沉降－催化氧化法对生化处理后的焦化废水进行脱色处理，探讨了混凝条件、催化氧化体系对脱色效果以及氟离子、氰离子、ＣＯＤＣｒ、氨氮等去除效果的影响，确定了合适的用于焦化废水脱色处理的新工艺。以聚三氯化铁为絮凝剂、ＰＡＭ为助凝剂，新型复合氯氧化剂ＳＤ１０１为催化氧化剂，在ｐＨ值为６．５－７．０、水温为３０℃条件下处理３小时，废水的色度从１４０倍降至５０倍以下，其他污染指标的去除效果明显。

We used the method of Flocculation Sedimentation - Catalytic Oxidation to decolor the coking plant wastewater after biochemical treatment. We discussed the flocculant and Catalytic Oxidation's effects of decoloring, as well as the reduction of F-, CN-, CODCr, and NH3 - N. We the also find a proper new technology to decolor the coking plant wastewater. It takes poly- FeCl3 as the flocculant, PAM as the auxiliary and SD101 as the catalytic oxidant. When the pH of wastewater is 6.5 - 7.0. the temperature of wastewater is 30℃, this treatment technology can effciently decolor the wastewater from 140 times to 50 times or even lower, while many other pollutants' concentration decreased greatly.