摘要
目的改良A/O工艺的传统工艺,解决生物法处理炼化废水效能较差的问题.方法进行A/O工艺的小试驯化研究,在A/O工艺的好氧池内增加弹性填料,以期提高微生物活性,强化炼化废水的处理效果.结果填料的增加对工艺的启动效率,微生物的活性以及污染物的去除效果都有显著的提高.弹性填料的弹性结构,可以较稳定且持久地吸附炼化废水中的少量油份及微生物,这不但提高了被吸附截留的微生物的污泥龄,有助于其种群富集与特异性优化,而且减少了油份对悬浮污泥的影响,提高了悬浮污泥的微生物活性.填料对曝气气泡的切割,增加了溶解氧质量浓度,减少了厌氧池带来的质量浓度梯度对好氧池的影响,也提高了硝化细菌等好氧细菌的活性.改良后的A/O工艺COD去除率提高10%,氨氮去除率提高10%,总氮去除率提高15%.结论弹性填料的增加,有效地提高了生物法处理炼化废水的综合效能.
In order to improve the performance of biological treatment for the refinery wastewater by traditional process of A/O process,a small-scale domestication study of the A/O process was performed.In the aerobic tank of the A/O process,an elastic filler is added to increase the microbial activity and enhance the treatment effect of the refinery wastewater.The filler has a significant increase in the starting efficiency of the process,the activity of microorganisms,and the removal effect of pollutants.The small amount of oil and microorganisms can be stably and lastingly absorbed because of the elastic structure of the elastic filler.As a result of it,not only the sludge age of the microorganisms that have been adsorbed and trapped has been increased,which contributes to their population enrichment and specificity optimization,but also reduced the impact of oil on suspended sludge and improved the microbial activity of suspended sludge.The cutting of aeration bubbles by the filler increases the dissolved oxygen concentration,reduces the influence of the concentration gradient resulted from by the anaerobic tank on the aerobic tank,and increases the activity of aerobic bacteria such as nitrifying bacteria.The COD removal rate was increased 10%,ammonia nitrogen removal rate was increased by 10%,and total nitrogen removal rate was increased by 15%by modified A/O process.Above all,the comprehensive efficiency of refinery wastewater by biological treatment can be improved effectively by elastic filler added.
作者
晁雷
艾晨亮
王焕舒
刘晋
CHAO Lei;AI Chenliang;WANG Huanshu;LIU Jin(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang China,110168;Liaoning Academy of Environmental Sciences,Shenyang,China,110015)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第5期953-960,共8页
Journal of Shenyang Jianzhu University：Natural Science
基金
水体污染控制与治理国家科技重大专项(2012ZX07202-001)
沈阳建筑大学学科涵育项目(XKHY-36)
关键词
弹性填料
生物法
A/O工艺
炼化废水
吸附
elastic filler
biological treatment
A/O process
refining wastewater
absorption
