复合絮凝剂APAC的结构及性能研究  

Study on Structure and Character for a Compound Flocculant

作　　者：夏德强[1] 陈小龙[2] 甘黎明[1] 冷宝林[1] 张远欣[1] 王守伟[1] 

机构地区：[1]兰州石化职业技术学院石油化学工程系,甘肃兰州730060 [2]中国石油兰州石化公司炼油厂,甘肃兰州730060

出　　处：《非金属矿》2013年第6期74-76,共3页Non-Metallic Mines

基　　金：甘肃省高等学校研究生导师科研项目(1216-03);甘肃省高校基本科研业务费专项资金资助项目(甘财教[2012]129号)

摘　　要：采用慢速滴碱法在合成聚合氯化铝的过程中加入酸改性凹凸棒,制备出了新型复合絮凝剂APAC。采用FTIR、TEM、SEM、EDS等测试手段研究了APAC絮凝剂的组成、结构及表面形貌等,确定了APAC处理生活污水的最佳絮凝条件为:投加量16 mg/L,pH值为8,此条件下浊度、CODCr的处理效果最好,降低率分别在99%和80%以上;残余铝含量最低,为0.134mg/L。对含Ni2+、Cr6+废水的处理表明,APAC能有效去除水中的重金属离子,在相同的条件下,APAC净水效果远好于聚合氯化铝(PAC)。A novel composite flocculant is prepared adding acid-treating attapulgite in the process of accession to polyaluminum chloride using a low-speed alkaline titrimetry. The APAC is characterizated by FT-IR, TEM, SEM and EDS. The optimal flocculant conditions of APAC have been obtained by teating domestic sewage. The treating efficiency of turbidity, CODcr are the best when the dosage of APAC is 16 mg/L and pH value is 8, and the reduction rate is above 99%, 80%, respectively; the residual aluminum is only 0.134 mg/L. The purification performance of APAC in treating heavy metal containing wastewater is investigated by purifying the wastewater contained Cr6＋ .2＋ and N1 . The results show that the heavy metal ions m the water can be removed effectively by APAC flocculant under the same conditions, APAC is much better than PAC in the water purification effect.

关 键 词：凹凸棒 絮凝剂 水处理 残留铝 重金属 

分 类 号：X703.1[环境科学与工程—环境工程] TD985[矿业工程—选矿]