低温对螺旋升流式反应器系统营养物去除效果的影响及其流态释因  

LOW TEMPERATURE EFFECTS ON BIOLOGICAL NUTRIENT REMOVAL IN SPIRAL UP-FLOW REACTOR SYSTEM AND FLOW PATTERN INTERPRETATION OF THE EFFECTS

作　　者：季铁军[1] 罗固源[1] 杜娴[1] 甘琳[1] 许晓毅[1] 汤琪[2] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]重庆交通大学,重庆400040

出　　处：《水处理技术》2008年第3期19-23,共5页Technology of Water Treatment

基　　金：国家自然科学基金(50378095);重庆市科学技术项目(CQ-PPEPAS)

摘　　要：结合螺旋升流式反应器(Spiral up-flow reactor,SUFR)的流态特点,分析低温(8～20℃)对SUFR系统处理效果的影响。结果表明,该系统COD和TN处理效果虽然随着温度的降低有所下降,但是COD及TN去除率仍分别达到86%、70%以上,TP的去除率一直在92%以上。流态模拟结果表明,SUFR系统中单元反应器的推流流态容积利用率为59%。这说明SUFR系统反应器内螺旋流形成的以活塞流为主要特征的复合流态有助于减轻低温对污水处理的负影响。该系统具有更宽的温度适宜范围。Based on the characteristics of flow pattern, effect of low temperatures between 8 and 20℃ on the Spiral up-flow reactor （SUFR） system was analyzed. The results of the operation under psychrophilic condition showed that the removal efficiency of COD and TN was over 86% and 70%, although the removal efficiencies decreased with temperature decreasing, TP-removal efficiency was always up to 92% at low temperature. The results of simulation showed that the plug flow pattern occupation rate of the reactor volume was about 63%. It indicated that negative effect of low temperature was compensated by the characteristic of the SUFR system, which is similar to plug-flow-reactor. The range of optimal temperature in the SUFR system is wide.

关 键 词：螺旋升流式反应器 温度 营养物去除 流态 推流 

分 类 号：X703.1[环境科学与工程—环境工程]