【摘要】 采用微波辐射技术,建立了麦草浆蒸煮黑液的处理工艺。以颗粒活性炭和钢渣为混合催化剂,考察了钢渣与活性炭总量、比例、微波辐射功率、辐射时间等对黑液处理效果的影响。结果表明,在微波辐射功率800W,照射时间10min,活性炭与钢渣总量13g、比例1∶23的工艺条件下,50mL黑液的色度去除率能达95%以上,并且发现混合催化剂在重复使用4次后,黑液的色度去除率仍达80%以上。进一步研究发现,黑液的氧化过程基本符合一级反应动力学规律。更多还原

【Abstract】 A microwave treatments has been developed for decoloration of wheat straw pulp wastewater. Granular activated carbon (GAC) and steel slag are used as catalyst. Effective factors on chrominance removal, such as quantity and ratio of the mixed catalyst, microwave power, and reaction time, were studied. Over 95% of chrominance removal from 50 mL wastewater could be achieved by putting in it 10 gram of GAC and steel slag at a ratio of 1:23 and operating the microwave oven at 800 W for 10 minutes. It was find that when the catalyst was used for the fourth time, the chrominance removal could still be more than 80%. A kinetics study on the treatment suggested that the decoloration process accorded to a fist-order reaction.更多还原