低温等离子体技术改善生物膜反应器载体表面性能的研究  

Improvement of Support Surface Property for Biofilm Reactor with Low-temperature Plasma Technique

作　　者：刘雨[1] 刘健[2] 

机构地区：[1]北京轻工业学院化工系,北京100037 [2]浙江省环境保护科学设计研究院,杭州310007

出　　处：《环境污染与防治》1997年第4期1-3,共3页Environmental Pollution & Control

摘　　要：通常，微生物及广为应用的多聚体型生物载体表面均带有负电荷，两者间产生的静电斥力严重阻碍了载体表面生物膜的形成。为强化微生物在载体上附着，提出了载体表面电荷改性新技术；低温等离子体氧化－Fe离子沉积技术（PlasmaOxidation－FeIonsCoatingTechnique）。研究了4种等离子体（CO2、O2、NH3和Ar气）对4种聚合载体（PE、PP、PS和PVC）的氧化强度及Fe3+在处理后载体上的沉积。实验表明，处理后的载体表面生物膜形成速度加快，生物量显著增加。这项新技术为开发生物膜反应器新型膜载体奠定了基础。Both surfaces of microorganism and widely used polymer－type biocarrier possess an overallnegative charge, thus creating an electrostatic repulsion barrier which seriously inhibits biofilmformation. In order to enhance bacterial adhesion on support surface, a novel technique was developed to mask the positive charge conferred to the support surface, thanks to low－temperatureplasma oxidation, arid followed by ferric ions coating, so－called plasma－oxidation－Fe ions coatingtechnique. The oxidation strength of various plasma, such as CO2, O2, NH3 and Ar, were studiedfor four kinds of thermoplastic supporters (PE, PP, PS and PVC). Tests of Fe ions coating onthe plasma－oxidized support surface were followed' Experimental results clearly showed that bacterial adhesionrate and capacity on the modified surface were greatly increased. This novel technique provides a basis for further development of new type biofilm support.

关 键 词：低温等离子体 载体表面 废水处理 生物膜反应器 

分 类 号：X703[环境科学与工程—环境工程]