摘要
对ABR反应器和生物滴滤池进行改良,将二者结合在一起,开发出一套一体化装置用于处理农村生活污水。研究了ABR水力停留时间分别为24、18、12 h,对应生物滴滤池水力负荷为1.75、2.35、3.50 m3/(m2·d)条件下,ABR-生物滴滤池系统对生活污水中COD、NH4+-N、TN和TP的去除效果及其沿程变化规律。研究结果表明,ABR-生物滴滤池系统在3种不同水力负荷条件下运行时,对污水中的COD、氮、磷均有一定的去除效果,但随着水力负荷增大,系统对污染物的去除率均有所下降。在水力负荷为1.75 m^3/(m^2·d)条件下运行时,系统处理效果最佳,对COD、NH4^+-N、TP和TN的平均去除率可达88.93%、84.75%、50.44%和48.47%。系统在3种水力负荷条件下稳定运行期间,污水COD、NH4+-N、TP和TN浓度均沿程降低,ABR反应器有效地降低了生物滴滤池运行负荷,顶层滤池对污染物去除效果优于中层滤池和下层滤池。
An integrated device of ABR and biotrickling filter were modified and combined was proposed for treating rural domestic sewage.The removal effect of integrated system of ABR-biotrickling filter on COD,NH4+-N,TN and TP in domestic sewage and the variation of pollutants along the path were studied under the conditions of the ABR hydraulic retention time was 24 h,18 h and 12 h,corresponding to the biotrickling filter hydraulic load was 1.75 m3/(m2·d),2.35 m^3/(m^2·d)and 3.50 m3/(m2·d).The results showed that the system of ABR-biotrickling filter had a certain removal effect on COD,nitrogen and phosphorus in the sewage under three different hydraulic load conditions,however,as the hydraulic load increased,the removal effect was reduced.The system had the best treatment effect under the condition of hydraulic load of 1.75 m3/(m2·d),the average removal rates of COD,NH4^+-N,TP and TN were 88.93%,84.75%,50.44%and 48.47%,respectively.The concentrations of COD,NH4+-N,TP and TN in sewage decreased along the process under the different hydraulic loading conditions.The biotrickling filter operating load was effectively reduced by the ABR.The top filter had better effect on pollutant removal than the middle filter and the lower filter.
作者
张国珍
亢瑜
武福平
闵芮
ZHANG Guozhen;KANG Yu;WU Fuping;MIN Rui(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,730070;Gansu Institute of Architectural Design and Research Co.,Ltd,lanzhou 730000,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2020年第11期108-112,共5页
Technology of Water Treatment
基金
甘肃省重点研发计划(17YF1NA056)。
关键词
ABR-生物滴滤池
水力负荷
沿程变化
ABR-bio-trickling filter
hydraulic loading rates
variation along the flow
