基于表面预处理的生物陶粒污水处理性能的试验研究(英文)  

Experiment Research on Sewage Treatment Characteristics of Bio-ceramic Based on Surface Pre-treatment

作　　者：江帆[1] 陈维平[1] 吴纯德[2] 陈敏[3] 张弢[1] 

机构地区：[1]华南理工大学机械工程学院,广州510640 [2]华南理工大学环境科学与工程学院,广州510640 [3]广东省环境保护局,广州510630

出　　处：《科学技术与工程》2006年第16期2513-2517,共5页Science Technology and Engineering

基　　金：广东省科技攻关计划(2005A30402001)资助

摘　　要：生物陶粒是生物接触氧化污水处理技术的重要材料,为了进一步提高生物陶粒的挂膜效果,对直径15mm左右的生物陶粒进行两种表面预处理,即表面全磨光和表面磨环。电镜扫描显示,表面预处理后,全磨光的生物陶粒将原来隐藏的微孔显露出来,平均孔径增大5倍左右。进行浸润试验和生活污水处理试验结果显示,全磨光的生物陶粒由于表面更粗糙,表面积增大,其含水率增加16%;磨环的生物陶粒由于存在有磨光与未磨的交界部分,便于水储存,其含水率增加25%。与此同时,粗糙的表面也增加了对微生物的吸附,其污水处理的CODCr和NH3-N的去除率增加2%～3%,而磨环的生物陶粒具有一些抵抗水力剪切、避免表面摩擦的区域,使得处理效果更好,污水处理的CODCr和NH3-N的去除率增加7%～9%。The oxidation. In order bio-ceramic plays an important role in sewage treatment technology by biological contact to improve the effect of bio-film, the bio-ceramic which diameter is about 15 mm, and is pre-treated, that is, its surface is polished or grinded with ring. Through observation by electronic microscope, it shows that the micro-pore is exploded after the bio surface is fully polished; thus the average pore size of fully polished bio-ceramic will become five times than that of unpolished. Then the soakage and sewage treatment experiment are finished; the results show that the polish treatment makes the surface coarser, thus the water content ratio will increase by 16%. Also because the bio-ceramic grinded with ring has a mixed transition of polished and unpolished, which can store water, thus its water content ratio will increase by 25%. Simultaneously, the coarse surface will enhance the microbial adhesion. In sewage treatment, the removal ratio of CODcr and NH3-N will increase by 2%-3%. For the bio-ceramic that grinded with ring, the unique mixed area can resist hydraulic shear stress, and avoid surface friction, thus it has the best removal effect in the two pre-treated surface method, its removal ratio of CODcr and NH3-N can increase by 7%-9%.

关 键 词：生物陶粒 表面预处理 生物挂膜 污水处理 

分 类 号：X703.3[环境科学与工程—环境工程]