摘要
以实验室规模的厌氧膨胀污泥床反应器(简称EGSB)内的活性污泥为研究对象,主要讨论影响活性污泥迅速颗粒化的因素,以加快絮状污泥的颗粒化进程。采用对比的实验方法,分别在反应器内加入小球藻和活性炭为载体进行对照实验。结果表明,小球藻和活性炭的加入在迅速提高COD去除率,污泥粒径增大和增强颗粒污泥沉降性方面有明显优势,胞外多聚物的含量均比接种时和对照实验中的相关数据有明显增加,颗粒污泥表面以产甲烷丝状菌和杆状菌为主。小球藻和活性炭的加入有助于加快活性污泥的颗粒化进程。
Anaerobic sludge in bench EGSB reactors treating the synthesized wastewater was studied. Experiments were carried out to investigate the main factors on anaerobic sludge granulation, in order to accelerate the process of granulation of flocculent sludge. The method of contrast was adopted in the experiment. Chlorella and activated carbon as carrier was put into reactors. The results showed that:anaerobic sludge with chlorella or activated carbon has the remarkable superigrity in improving the removal rates of COD, the granular size, granular sedimentationrate and extracellular polymer(ECP)content comparing to flocculent sludge. The methanogenic filamentous bacteria and bacilliform bacteria predominate on the surface of granular sludge produced in all reactors. Flocculent sludge withchlorella and activated carbon was benefited to its process of granulation.
出处
《内蒙古环境保护》
2004年第4期39-43,共5页
Inner Mongolia Environmental Protection
关键词
厌氧污泥
颗粒化
小球藻
活性炭
anaerobic sludge
granulation
chlorella
activated carbon
