聚丙烯填料的生物亲和亲水磁化改性对其润湿及挂膜性能的影响  

INFLUENCE OF MODIFICATION OF POLYPROPYLENE PACKING BY BIOCOMPATIBLE, HYDROPHILIC AND MAGNETIC ADDITIVES ON ITS WET ABILITY AND BIOFILM FORMATION PERFORMANCE

作　　者：程江[1] 张凡[1] 海景[1,2] 杨卓如[1] 

机构地区：[1]华南理工大学化工学院 [2]华南环境科学研究所,广东广州510655

出　　处：《化工学报》2004年第9期1564-1567,共4页CIESC Journal

基　　金：广东省自然科学基金 (No 0 115 63 );广东省科技计划项目 (No 2 0 0 2C3 163 1);国家环保局华南环境科学研究所青年基金资助项目~~

摘　　要：The polypropylene for preparing packing(biofilm carrier) used in biodegradation of wastewater was modified by adding some biocompatible, hydrophilic and magnetic additives such as stearic acid, polyvinyl alcohol, activated carbon and magnetic powders.The prepared packing was then magnetized in a magnetizer to be charged with a 2.5×10 -3 —5.0×10 -3 tesla permanent magnet.The wettablity and biofilm formation performance of the modified and magnetized packing were tested.The result showed that the adsorbed water content of the polypropylene packing increased more than 300% and the period of biofilm formation reduced from 7—9 days to within 2 days after modification and magnetization.The removal rate of COD Cr by the modified and magnetized packing was also proved to be 30% higher than that by the original polypropylene packing.The polypropylene for preparing packing (biofilm carrier) used in biodegradation of wastewater was modified by adding some biocompatible, hydrophilic and magnetic additives such as stearic acid, polyvinyl alcohol, activated carbon and magnetic powders. The prepared packing was then magnetized in a magnetizer to be charged with a 2.5×10-3-5.0×10-3 tesla permanent magnet. The wettablity and biofilm formation performance of the modified and magnetized packing were tested. The result showed that the adsorbed water content of the polypropylene packing increased more than 300% and the period of biofilm formation reduced from 7-9 days to within 2 days after modification and magnetization. The removal rate of CODCr by the modified and magnetized packing was also proved to be 30% higher than that by the original polypropylene packing.

关 键 词：生物亲和 亲水性 磁效应 填料 废水生物降解 

分 类 号：TQ028.1[化学工程] X703.1[环境科学与工程—环境工程]