Removal of COD in coking-plant wastewater by the moving-bed biofilm sequencing batch reactor process
Introduction:The coking wastewater contains wide range of hydroxybenzene, phenols, mono-cyclic nitrogen-containing compounds, and most of the contaminants are non-biodegradable, which make the biological treatment results unsatisfied. In spite of conventional activated sludge treatment with A-A-O process can offers an efficient removal of NH4*-N and COD from the coking wastewater, this system still has some limitations, such as the high operating expense, poor tolerance to shock loading, poor settle-ability problem at high loading rates1.A number of investigations2, 3 have reported that the moving bed biofilm reactor is more advantageous in dealing with industrial wastewater, due to accumulation of high concentration of active biomass via microorganism immobilization. Furthermore, the moving bed biofilm reactor with A-A-0 arrangement is more economic and the poor settle-ability problem was improved greatly at high loading rates of COD, but the poor tolerance to shock loading in this system still needs more studies to make results satisfied2, 4. As for the coking wastewater treatment, previous research has proved SBR arrangement was suitable to tackle the coking wastewater in activated sludge treatment. However, date is still scarce on using the moving bed biofilm reactor.
JieYing Jing Jie Feng WenYing Li Ying Xu
Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Taiyuan 030024, Chi Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Taiyuan 030024,Chin
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
149-150
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）