摘要
实验进水中COD、苯酚、氨氮的初始浓度分别为400、400、200 mg/l,当优势菌混合比(即高效酚降解菌:高效氨氮降解菌)为1:2,采用一次性投加的方式时,考察了生物强化A/O工艺运行参数对焦化废水处理效果的影响:水力停留时间为35 h,优势菌种固定化小球投加比1:10(V小球:V反应器体积),外回流比为300%,曝气量为35 ml/min,曝气方式采用微孔曝气的方法时焦化废水中各污染物的去除率最高,水力停留时间从常规A/O工艺的70 h缩短到35 h,出水达标。
With COD,phenol and Ammonia nitrogen as the model pollutant,the initial concentration of them are 400,400 and 200 mg/1 respectively. The Treating of Coking Wastewater by Biofortification of A/O process is systemically investigated, which under the following condition nitrogen degrading ： Superiority strains proportion （phenol-degrading bacterium：ammonia bacterium）of 1：2, and add to the system once and for all. The optimal treating conditions is obtained, namely HRT 35 h,The Adding quantity of immobilization strain 10% ,reflux ratio 300% ,aeration quantity 355 ml/min,the style of aeration was microporous aeration.On the optimal treating conditions, we can achieve the highest removal rate of pollutants, and the HRT reduce from 70h to 35 h, effluent can reach the standard.
出处
《能源环境保护》
2013年第5期14-17,共4页
Energy Environmental Protection
关键词
焦化废水
生物强化
A
O
苯酚
氨氮
Coking Wastewater
Immobilization
A/O
Phenol
Ammonia nitrogen
