粉煤灰制沸石负载氧化铜处理活性艳红X-3B废水

Treatment of Active Red X-3B Wastewater by Zeolite Loaded Copper Oxide Prepared with Coal Fly Ash

以粉煤灰作原材料制备沸石负载氧化铜处理活性艳红X-3B废水。采用正交试验法考察了灰/碱比、煅烧温度、晶化时间和灰/水比对出水COD和色度指标的影响,确定了沸石制备最佳工艺条件为灰/碱质量比1.2∶1、焙烧温度600℃、晶化时间6 h和灰/水质量比1∶11,制备的沸石负载氧化铜催化剂与过氧化氢联合催化氧化处理活性艳红X-3B废水,可使出水中COD和色度的指标由原水中的450 mg.L-1和10 240降至90 mg.L-1和3倍(稀释倍数),相应的去除率分别为80.02%和99.97%。

In this paper, coal fly ash was used as raw material to synthesize zeolite loaded with copper oxide for treatment of active red X-3B wastewater. The effects of ratio of ash to alkali,calcination temperature ,crystallization time and ratio of ash to water on the COD and color indexes at the outlet of the treated wastewater were investigated by orthogonal test method. The optimal technical conditions of zeolite preparation were determined to be：ratio of ash/alkali 1.2 ： 1, calcination temperature 600 ℃, crystallization time 6 h and ratio of ash/water 1 ： 11. The pre- pared zeolite loaded with copper oxide was used to treat the active red x-3B wastewater with hydrogen peroxide, as an oxidant,to make the COD and color values in the wastewater be dropped from 450 mg ：L-1 and 10 240 diluted times to 90 mg ： L-1and 3 diluted times with their corresponding COD and color removal rates of 80.02% and 99.97 %, respectively.