CAJ | 학술논문

采用化学氧化-铁离子覆盖和化学氧化-表面接枝2种方法对聚乙烯生物填料进行表面改性,并使用接触角、扫描电镜及x射线光电子能谱等手段对改性前后的填料表面进行表征,同时还考察其在废水处理中的挂膜速度和处理效果.结果表明,2 种改性方法都能使填料表面形成腐蚀坑而增加了表面粗糙度,并引入基团使填料表面呈正电性,使得填料的亲水性与生物亲和性增强,有利于微生物的粘附.2种改性方法可将挂膜时间分别缩短37.5%和60%,挂膜量分别提高54.8%和76.1%,COD的去除率也分别提高10.63%和8.64%.
채용화학양화-철리자복개화화학양화-표면접지2충방법대취을희생물전료진행표면개성,병사용접촉각、소묘전경급x사선광전자능보등수단대개성전후적전료표면진행표정,동시환고찰기재폐수처리중적괘막속도화처리효과.결과표명,2 충개성방법도능사전료표면형성부식갱이증가료표면조조도,병인입기단사전료표면정정전성,사득전료적친수성여생물친화성증강,유리우미생물적점부.2충개성방법가장괘막시간분별축단37.5%화60%,괘막량분별제고54.8%화76.1%,COD적거제솔야분별제고10.63%화8.64%.
Two kinds of methods,chemical oxidation-surface covered with iron ion and chemical oxidation-surface grafting of gelatin,were used to modify the surface perporty of polyethylene bio-carrier,and the improve-ment of Surface properties of bio-carrier was characterized by contact angle,scanning electron microscope and X-ray photoelectron spectroscopy,the speed of biofilm formation and performance were also investigated for treating wastewater.The results showed that two kinds of surface modified methods could increase the surface roughness because of formation of corrosion pits,and make the surface electricity of bio-carrier positive due to the introduc-tion of groups,which made the hydrophilicity and biological affinity greatly improved,and facilitate for micro-or-ganisms adhesion.The speed of biofilm formation of the two methods was enhanced 37.5%and 60%,respectively,the biomass attached on bio-carrier were increased 54.8%and 76.1%,respectively,and the COD removal rates were also increased 10.63%and 8.64%,respectively.