应急平台改性砂对微污染物的去除效果与吸附特性研究  

REMOVAL MICRO-POLLUTANTS AND ADSORPTION CHARACTERISTICS USING IRON OXIDE COATED SANDS ON EMERGENCY PALTFORM

作　　者：梅胜[1] 李超[1] 李冬梅[1] 赵向阳 许逸韵 李绍秀[1] 

机构地区：[1]广东工业大学土木与交通学院,广东广州510006 [2]佛山水业集团高明供水有限公司,广东佛山528500

出　　处：《水处理技术》2014年第3期106-110,共5页Technology of Water Treatment

基　　金：国家自然科学基金(51108094;51378129);广东省科技计划项目(2012B030900003)

摘　　要：采用以应对微污染水质突发事件的移动式微型全自动高效应急实验台("应急平台",水力停留时间26 min)和自制的氧化铁改性石英砂滤料(改性砂),对典型微污染物的强化过滤性能进行实验研究。结果表明,应急平台联合改性砂强化过滤技术,对COD、浊度、氨氮、Zn2+、Cu2+、Cd2+、Cr6+的去除率分别为32%、99.5%、30%、86.61%、93.63%、93.5%、70.19%,相比传统石英砂,去除率分别提高22、25、26、36、54、46、36个百分点。改性砂具有多孔复杂的表面结构、较大的表面积、更多的表面吸附位数,能显著提高对微污染有机物及重金属离子的去除率,Langmuir曲线较好地拟合其对金属离子的吸附,去除机理主要以络合反应的化学吸附为主,同时伴有物理吸附。The mobile mini automatic efficient emergency platform （emergency platform, HRT is 26rain） responsing to micro-polluted water emergency and homemade iron oxide coated sands filters （IOCS） were used to study on enhanced filtration performance of typical micro-pollutants. The results were shown as followed： using emergency platform with IOCS the COD, turbidity, ammonia, Zn^2＋, Cu^2＋, Cd^2＋, Cr^6＋ removal efficiency can achieve 32%, 99.5%, 30%, 86.61%, 93.63%, 93.5%, 70.19%. Removal rate were increased by 22, 25, 26, 36, 54, 46, 36 percent instead of raw sands. IOCS with a porous surface structure, a larger surface area, more surface adsorption digits, can significantly improve the micro-polluted water and metals removal efficiency. Langmuir curve fit well the adsorption of metal ions. The removal mechanism is mainly chemical adsorption-based, with physical adsorption.

关 键 词：移动应急平台 '氧化铁改性石英砂 微污染物 金属离子 吸附特性 

分 类 号：TU991.2[建筑科学—市政工程]