连续流态下好氧颗粒污泥的培养及处理制药废水的性能

Cultivation and Characters of Aerobic Granule Sludge on Pharmaceutical Wastewater in Continuous Flow Condition

在上流式好氧颗粒污泥床反应器中,以厌氧颗粒污泥和好氧絮状活性污泥为接种泥,采用人工配制的模拟废水,成功培养出性能优异的好氧颗粒污泥.反应器内污泥浓度稳定在5g/L左右,颗粒污泥粒径为0.5～2.0mm,当进水COD为2000mg/L,容积负荷为4.8kg/(m3·d)时,系统对COD的去除率稳定在96%以上.通过扫描电镜观察,好氧颗粒污泥是层状结构,表面有大量丝状菌缠绕,内部有短杆菌和空穴存在.逐步提高制药废水在进水中的比例,经过47d的培养,生物制药废水完全取代模拟废水,系统对COD、NH3-N、TP的去除率分别稳定在90%、90%和70%以上.

The successful cultivation of aerobic granular sludge with outstanding performance in airlift aerobic granular sludge bed reactor （AGSB） which was inoculated anaerobic granular sludge and aerobic flocculent sludge was performed using a syn- thetic wastewater mainly consisted of glucose as carbon source. The diameters of the granules ware 0. 5- 2. 0 mm and the sludge concentration in the reactor was in 5 g/L or so. As the influent COD of 2 000 mg/L and the COD loading of 4. 8 kg/ （m3 ~ d） were employed, COD removal synthetic maintained more than 96%. Through the scanning electron microscopy ob- servation, aerobic granular sludge was layered structure with a large number of filamentous bacteria winding on the surface, and some short bacillus and holes existing inside. After 47 days of cultivation, when the pharmaceutical wastewater completely replaced the synthetic water with gradually the increased pharmaceutical wastewate in the ratio of water, the COD, NH3-N, TP removal synthetic were more than 90%, 90%, and 70% respectively.