中低温下IC反应器的启动及污泥颗粒化研究  

Start-up of Internal Circulation Anaerobic Reactor at Medium-low Temperature and Sludge Granulation

作　　者：唐源[1,2] 马邕文[1,2] 

机构地区：[1]华南理工大学环境科学与工程学院,广东广州510006 [2]工业聚集区污染控制与生态修复教育部重点实验室,广东广州510006

出　　处：《中国给水排水》2010年第21期30-33,共4页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2007AA03Z433);广东省节能减排重大专项(2008A080800003)

摘　　要：在中低温下用葡萄糖废水作基质来启动IC反应器，研究了反应器的启动特性，同时考察了颗粒污泥的形成过程。结果表明，在运行温度为9～28℃的条件下，反应器经67d完成启动，在第22天反应器内出现了颗粒污泥，随着运行时间和容积负荷的增加，颗粒污泥的粒径不断增大。为确保稳定运行，应控制出水pH值为6．1～6．8、HRT为6～8h、容积负荷为3．58～7．95kg．COD／（m^3·d）、出水VFA〈200mg／L，最终的产气量稳定在约35L／d，在进水COD为2000mg／L时，对COD的去除率能一直保持在80％以上。启动完成后，反应器内粒径〉0．3mm的颗粒污泥所占比例为41．2％，粒径〉0．9mm的中型颗粒污泥也从零增加到11．44％。Glucose was used as substrate to start up internal circulation （IC） reactor at mediumlow temperature. The start-up characteristics of IC reactor were studied, and the formation of granular sludge was investigated. The results show that at 9 to 28 ℃, the start-up of the reactor is completed with- in 67 days, and granular sludge occurs in the reactor on the 22nd day. The size of granular sludge is con- tinuously increased with the increase of operation time and volume load. To ensure a stable operation, the pH, HRT, volume load and effluent VFA should be controlled at 6.1 to 6.8, 6 to 8 h, 3.58 to 7.95 kg· COD/（ m^3 · d） and less than 200 mg/L respectively. The final biogas production is stabilized at about 35 L/d. The removal rate of COl） can be maintained at above 80% when the influent COD concentration is 2 000 mg/L. After the start-up is completed, the granular sludge of greater than 0.3 mm accounts for 41.2% , and that of greater than 0.9 mm is increased to 11.44% in the reactor.

关 键 词：IC反应器 启动 容积负荷 挥发酸 厌氧颗粒污泥 颗粒粒径 

分 类 号：X703[环境科学与工程—环境工程]