Modified bentonite granules(MBG1, MBG2, MBG3) were prepared by mixing with polyvinyl alcohol(PVA) as binder and pore-former(sodium bicarbonate, carrageenan, starch) and microwave Al-bentonite. The effects of MBG1, MBG2 and MBG3 on UV254 and NH4-N in micro-polluted water were investigated. The results showed that the removal efifciency of MBG1 on UV254 and NH4-N was better than MBG2 and MBG3. The best prepared conditions of MBG1 were PVA concentration 10%, sodium bicarbonate concentration 5%and embedding quantity(mmodiifed bentonite:mPVA) of 10. Under the following conditions:pH value 7, MBG1 dosage of 3 g/L, adsorption time of 20 min, the removal rate of MBG1 on UV254 and NH4-N will be up to 98%and 20%, respectively at humic acid concentration of 20 mg/L and NH4-N concentration of 5 mg/L in micro-polluted water.%采用聚乙烯醇（PVA）为粘结剂和不同造孔剂（碳酸氢钠、卡拉胶、淀粉）对微波铝改性膨润土进行造粒，制备改性膨润土颗粒MBG1、MBG2、MBG3。考察了不同制备条件下MBG1、MBG2、MBG3对微污染水中UV254和NH4-N的降低效果。结果表明，MBG1对UV254和NH4-N降低效果优于MBG2和MBG3，MBG1的最佳制备条件为：PVA用量10 g/100mL水，碳酸氢钠用量5 g/100mL水，包埋量（m改性土∶mPVA）=10。在pH值为7、投加量3 g/L、吸附时间20 min的条件下，MBG1对20 mg/L腐殖酸、5 mg/L氨氮的微污染水降低率分别可达98%和20%以上。
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