非均相CWO法对难降解印染废水色度的去除

Removing Nondegradable Color from Dyeing Wastewater Using a Nonhomogeneous CWO Method

通过单因素实验和正交实验,研究了采用Cu-Fe-La/FSC催化剂的CWO法处理印染废水影响因素,以及优化操作条件下的水样可生化性.结果表明:水样脱色率随催化剂用量、反应温度、反应总压的增加和反应时间的延长而提高,随进水浓度的升高而降低;各因素对水样处理的影响为:反应温度>反应时间>催化剂用量>反应总压>进水浓度;CWO法处理后,印染废水可生化性明显提高,水样的B/C值提高了30.5%.

Using single factor and orthogonal test designs,the factors affecting dyeing wastewater treatment were studied using CWO technology and a Cu-Fe-La/FSC catalyst.Biodegradability of water samples was investigated under optimal operating conditions.The decolorization rates of water samples increased with increases in catalyst amount,reaction temperature,reaction pressure and reaction time,while water sample decolorization rates decreased with increasing solution dilution.Water sample treatment was affected,from most to least,by the following factors： reaction temperature,reaction time,catalyst amount,reaction pressure,and concentration of incoming wastewater.Use of the CWO method significantly increased biodegradability of printing and dyeing wastewater,and B/C of the water samples increased by 30.5%.