作　　者： ; ; ; ;

机构地区： 华南理工大学化学与化工学院

出　　处： 《中国造纸》 2007年第7期19-22,共4页

摘　　要： 添加糖类、淀粉、羟基磷灰石(HAP)、磁粉等对普通聚乙烯填料(PPE)进行改性,充磁后形成新型磁性聚乙烯填料(MPPE),研究了MPPE特性及其对含苯酚废水在好氧生物降解中的影响。SEM、EDAX和IR图谱分析证实了MPPE结构产生了变化。质量浓度为120mg/L的含苯酚废水在好氧生物填料柱中处理14h后,PPE和MPPE对苯酚去除率分别为82%和93%,TOC去除率分别为78%和89%;质量浓度为350mg/L的含苯酚废水处理35h后苯酚去除率分别为85%和90%,TOC去除率分别为80%和86%;两种不同质量浓度的含苯酚废水降解后MPPE上微生物挂膜量比PPE分别提高约64%和34%。MPPE还能增加水中DO浓度,承受更高浓度的初始苯酚浓度。 The ordinary polyethylene packing/biofilm carrier （ PPE ） was modified by adding glucide, amylum, hydroxyapatite （ HAP ） , magnetic powders and other additives, the modified packing was magnetized in a magnetizer then a kind of new magnetic packing （MPPE） was prepared. The performance of MPPE and its influence on biological degradation of phenol wastewater in aerated process were studied. The observation of SEM, EDAX and IR analysis showed that the conformation of MPPE was changed, the surface and section of MPPE were rough and accidented, the specific surface area of MPPE was increased, and magnetic powders, HAP and other additives were separated in polyethylene polymer. The removal rates of phenol by using PPE and MPPE were 82 %, 93 %, the removal rates of TOC could reach 78%, 89% respectively, when the phenol wastewater at 120mg/L concentration was treated with aerated process for 14 hours. The removal rates of phenol were 85 %, 90%, the removal rates of TOC reached 80 %, 86 % respectively when the phenol wastewater at 350mg/L was treated for 35 hours. The weight of biofilm formation on MPPE was 64 % and 34% higher than that on PPE at this two wastewaters. MPPE could also increase DO concentration and endure the higher initial phenol concentration. The MPPE has application potential in phenolic wastewater treatment.

关 键 词： 磁性填料 注射成形 生物膜 降解 苯酚

领　　域： [环境科学与工程]