固定化生物流化床处理尿素厂废水的中试研究  

Pilot-plant research on urea plant wastewater treatment by biological fluidized bed with immobilized microorganisms

作　　者：万琼[1] 叶正芳[2] 魏东洋[3] 周旭辉 

机构地区：[1]西安科技大学建筑与土木工程学院,西安710054 [2]北京大学环境学院,北京100085 [3]中山大学环境科学与工程学院,广州510275 [4]中国建筑西北设计研究院,西安710003

出　　处：《给水排水》2006年第8期44-47,共4页Water & Wastewater Engineering

摘　　要：采用O／A／O／A（好氧／缺氧／好氧／缺氧）工艺的固定化生物流化床处理技术，对尿素厂的氨氮废水（NH3-N50～500mg／L）进行了现场中试试验研究。试验结果表明：该技术处理尿素厂废水效率高，效果好，费用低；当水力停留时间平均为21h时，出水TN平均浓度为26．63mg／L，去除率为90%，出水NH3-N平均浓度为6．51mg／L，去除率可达96%。Pilot-plant of O/A/O/A process in biological fluidized bed reactor with immobilized microorganisms was conducted to investigate the treatment of urea plant wastewater （with ammonia-nitrogen concentration of 50 to 500 mg/L）. The results show that the O/A/O/A process is effective and the cost is low. Removals of 90% and 96% were obtained for TN and ammonia-nitrogen respectively at condition when the hydraulic residence time in the immobilized fluidized bed is 21 hours. The final mean residual TN and ammonia-nitrogen in the effluent were 26. 63 and 6. 51 mg/L respectively.

关 键 词：固定化微生物 生物流化床 氨氢废水 

分 类 号：X703[环境科学与工程—环境工程] TQ051.62[化学工程]