膜吸收过程中吸收液膨胀的产生及抑制方法  

THE MECHANISM AND THE PREVENTION METHODS WITH ITS APPLICATION OF THE ABSORPTION SOLUTION SWELLING IN MEMBRANE ABSORPTION PROCESS

作　　者：郭宇杰[1] 贾智萍[2] 赵长伟[2] 王军[2] 栾兆坤[2] 范彬[2] 

机构地区：[1]华北水利水电学院环境与市政工程学院,郑州450011 [2]中国科学院生态环境研究中心,环境水质学国家重点实验室,北京100085

出　　处：《环境化学》2008年第6期782-785,共4页Environmental Chemistry

基　　金：国家自然科学基金(No.50708109)资助;华北水利水电学院高层次人才科研启动项目资助

摘　　要：讨论了吸收液膨胀的发生和抑制方法,并应用于分子筛废水的处理.结果表明,通过提高吸收液温度、料液中溶质或盐的浓度以及降低吸收液(硫酸)的浓度,均可有效抑制吸收液膨胀.以实际分子筛工艺废水为处理对象,采用1mol·l-1的硫酸作为吸收液,较大程度地抑制了吸收液膨胀.在料液温度为49.7℃,pH=12的条件下,废水中的氨氮可以在半小时内由8000mg·l-1降低到15mg·l-1以下.Membrane absorption （MA） is a good method for treating high ammonia wastewater, but the absorption solution swelling is a serious problem. The mechanism and prevention methods of absorption solution swelling,together with its application in treating molecule sieves wastewater, are discussed. The results indicate that absorption solution swelling can be effectively prevented by increasing temperature of absorption, increasingsalt concentration of feed solution, or lowering sulfate acid concentration in absorption solution. At 49. 7℃ and pH = 12, ammonia in the wastewater from molecule sieves production can be removed from 8000 mg ·l^-1to less than 15 mg ·l ^-1 in half an hour by MA process. The absorption solution swelling is not serious for using the lower concentration sulfate acid as absorption solution and the high concentration inorganic salts andammonia in such wastewater.

关 键 词：中空纤维充气膜 废水 吸收 

分 类 号：X703[环境科学与工程—环境工程]