锰矿石氧化-磷酸铵镁沉淀-A/O联合处理焦化废水  

Coking Wastewater Treatment by Manganese Ore Oxidation-Magnesium Ammonium Phosphate(MAP) Precipitation-A/O Combined Process

作　　者：黄晓鸣[1,2] 朱木兰[1,2] 潘敏[3] 

机构地区：[1]厦门理工学院水资源环境研究所,福建厦门361024 [2]厦门市水资源利用与保护重点实验室,福建厦门361024 [3]厦门理工学院环境科学与工程学院,福建厦门361024

出　　处：《厦门理工学院学报》2015年第1期102-106,共5页Journal of Xiamen University of Technology

基　　金：福建省教育厅科技项目(JB11177);厦门市科技计划项目(3502Z20130039);厦门理工学院高层次人才项目(YKJ14037R)

摘　　要：以锰矿石氧化-磷酸铵镁沉淀-A/O组合工艺联合处理焦化废水.利用锰矿石氧化去除水中挥发酚等有机物,进水p H=2.0,水力停留时间22 min,挥发酚去除率达98.8%,COD去除率64.8%.出水经磷酸铵镁(MAP)沉淀处理,去除和回收大部分氨氮,在最佳p H=10.5时氨氮去除率达81.4%.以A/O工艺生物处理,混合液回流比200%,COD和氨氮去除率为93.8%和97.3%.焦化废水经组合处理后,挥发酚、COD和氨氮去除率分别达98.8%、97.8%、99.6%.The aim of this study was to treat coking wastewater by using a joint strategy of manganese ore oxidation-magnesium ammonium phosphate （MAP） precipitation-A/O process. In the process of manganese ore oxidizing organic matters from coking wastewater, the removal effieiencies of volatile phenol and COD were respectively up to 98.8% and 64.8% at influent pH of 2.0 and hydraulic retention time （HRT） of 22 min. The effluent from manganese ore column was then treated by MAP process, and most of ammonium could be removed and recovered. The results showed that 81.4% of ammonium was removed at the optimum pH （ 10. 5） in the MAP process. In the last process of A/O system, the removal efficiencies of COD and N were respectively 93.8% and 97.3% at the reflux ratio of 200%. The coking wastewater was efficiently treated by the joint strategy of manganese ore oxidation-MAP preeipitation-A/O process, and the removal efficiencies of volatile phenol, COD and ammonium were 98.8%, 97.8% and 99. 6%, respectively.

关 键 词：锰矿物 磷酸铵镁 A/O工艺 焦化废水 

分 类 号：X784[环境科学与工程—环境工程]