Abstract: New functional materials crosslinking β-cyclodextrin（MDI-β-CD) can be used for better treatment of wastewater containing phenol because of the special structure. Modified crosslinking β-cyclodextrins has the ability to absorb phenol pollutants because of the porous structure. In order to improve treatment effects，the treatment abilities of MDI-β-CD and the suitable working conditions of the phenol wastewater were studied using ultrasonic. The dosage of MDI-β-CD，the pH and concentration of wastewater，ultra sound intensity and frequency were investigated. The suitable technological conditions of adsorption were determined as the following：pH 6.0，initial concentration 100 mg/L，wastewater volume 100 mL，new type crosslinking β-cyclodextrins 40 g/L，absorption temperature 40 ℃，absorption time 120 min. The ultrasound parameters were 0.2 W/cm2 of ultrasonic intensities and 20 kHz ultrasonic frequency. The absorption efficiency was up to 94.1%.

Key words: crosslinking β-cyclodextrin, ultrasound, phenol wastewater, absorption

摘要： 环糊精因其特殊的结构特点，尤其是经过交联剂改性的交联β-环糊精（MDI-β-CD），可以处理与其空腔尺寸匹配的苯酚污染物，具有更好的处理苯酚废水的能力。为进一步提高MDI-β-CD处理苯酚废水的效果，研究其在超声协同条件下的废水处理能力和适合工况。通过对MDI-β-CD用量、废水pH值、废水浓度、超声声强和频率的研究，找到处理苯酚废水的适合工艺条件：超声频率20 kHz，超声声强0.2 W/cm2，苯酚初始浓度100 mg/L，pH值6.0，溶液体积100 mL，反应温度40 ℃，吸附时间120 min，MDI-β-CD用量40 g/L；在此条件下，MDI-β-CD与超声协同处理苯酚废水吸附效率可以达到94.1%。

关键词: 交联β-环糊精, 超声, 苯酚废水, 吸附