两种厌氧反应器培养颗粒污泥的对比试验

Comparative experiment of anaerobic granular sludge cultivation in two kinds of anaerobic reactors

摘要: 以养猪场废水作为试验用水，对在IC和UASB反应器内培养厌氧颗粒污泥的过程进行了对比试验，并对培养出的颗粒污泥的特性进行了对比分析。结果表明：经过54d培养，通过不同孔径的筛网进行测试，发现IC反应器内形成的颗粒污泥的直径多数在1～4 mm之间，其中2～3 mm的污泥质量占污泥总质量的比例最大，为28.5％，并且有大于5 mm的颗粒污泥产生；而UASB内形成的颗粒污泥直径多数在1～3 mm之间，其中1～2 mm的污泥质量占污泥总质量的比例最大，为38.7％，且没有发现大于5 mm的颗粒污泥。

Abstract: Comparative experiments of anaerobic granular sludge cultivation in Internal Circulation(IC) and Upflow Anaerobic Sludge Bed(UASB) reactors were conducted on treating wastewater from pig farm. It is found that after 54 days cultivation large quantity of granular sludge formed in both reactors, but the diameter of granular sludge in IC reactor is generally larger than that in UASB, most granular sludge diameters vary from 1 to 4 mm in IC comparing 1 to 3 mm in UASB, 2～3 mm granular sludge in IC and 1～2 mm ones in UASB account for the most proportion, separately reaches 28.5% and 38.7%, at the same time granulars sludge with diameter larger than 5 mm were formed only in IC.