抗菌吸附材料的制备及其在再生水处理的应用  

Preparation of antibacterial adsorption materials and application in reclaimed water treatment

作　　者：林海[1] 郭丽丽[1] 江乐勇[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《北京科技大学学报》2010年第5期644-649,共6页Journal of University of Science and Technology Beijing

基　　金："十一五"国家科技支撑计划重大资助项目(No.2006BAC19B01)

摘　　要：以具有良好脱氮效果的改性沸石为原材料,制备抗菌吸附材料.将其用于处理大肠菌群浓度和氨氮含量较高的市政污水厂二级出水结果表明,分别采用银、锌和铜三种金属离子制备抗菌吸附材料,其中银离子的抗菌性能最好,有助于氨氮的去除.最佳制备条件为:AgNO3用量85mg.g-1,pH6～7,制备时间120min,制备温度40℃,转速150r.min-1.优化后材料的载银量为49.79mg.g-1.将该材料应用于再生水处理,在混合投加抗菌吸附材料0.5g.L-1和沸石2g.L-1条件下,反应120min,该材料的杀菌率98.87%,氨氮去除率66.54%,剩余氨氮的质量浓度为8.36mg.L-1,出水达到城市杂用水水质指标.Modified zeolite with better nitrogen removal effect was used to prepare antibacterial adsorption materials for treating the secondary effluent of high-concentration coliform and ammonia nitrogen.Among Ag＋,Zn2＋ and Cu2＋ ions,silver-supported antibacterial adsorption materials have the best antibacterial properties and are beneficial to nitrogen removal.The optimal preparation conditions are the following：AgNO3 concentration of 85mg·g^-1,pH 6-7,preparation time of 120min,reaction temperature of 40℃,and reaction speed of 150r·min^-1.After the optimization,the silver content in the prepared materials is 49.79mg·g^-1.0.5g·L^-1 of silver-supported antibacterial adsorption materials and 2g·L^-1 of zeolite were applied to treat renewable water under the optimal conditions.The results show that the reaction time is 120min,the sterilizing rate is 98.87%,the removal rate of ammonia nitrogen is 66.54%,the mass concentration of residual nitrogen is 8.36mg·L^-1,which achieve the water-quality indexes of the urban miscellaneous water.

关 键 词：再生水 水处理 抗菌材料 杀菌 脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]