有机负荷对ABR系统运行特征及效能的影响

李建政, 倪佳, 郑国臣, 邰晓辉, 张岩

哈尔滨工业大学市政环境工程学院城市水资源与水环境国家重点实验室



摘要:

为提高厌氧折流板反应器(ABR)的处理效能,采用有效容积为28.75L的4格室ABR,通过进水COD质量浓度和水力停留时间(HRT)的调控,探讨有机负荷率(OLR)的改变对系统运行特征和效能的影响.结果表明,在OLR为4.0～5.4kg·m-3·d-1范围内,通过进水COD质量浓度和HRT的调控,可使参与厌氧消化过程的各功能菌群在ABR系统中的分布更加有序,可有效提高系统的处理效能和运行稳定性.在进水COD为8000mg·L-1、HRT为48h,即OLR为4kg·m-3·d-1的条件下,ABR对COD的去除率可稳定在90%以上.

关键词:  厌氧折流板反应器  运行效能  有机负荷  COD  水力停留时间

DOI：10.11918/j.issn.0367-6234.2011.08.011

分类号:X703

基金项目:国家高技术研究发展计划资助项目(2006AA05Z19);国家水体污染控制与治理科技重大专项(2008ZX07207-005-02);哈尔滨市科技创新人才研究专项资金项目(2009RFXXS004)



Impact of organic loading rate on the performance and pollutant removal efficiency in an ABR

LI Jian-zheng, NI Jia, ZHENG Guo-chen, TAI Xiao-hui, ZHANG Yan

State Key Laboratory of Urban Water Resource and Environment,School of Municipal and Environmental Engineering,Harbin Institute of Technology,150090 Harbin,China,

Abstract:

To improve the pollutant removal efficiency of anaerobic baffled reactor(ABR),the influence of or-ganic loading rate(OLR)on the treatment system was investigated based on adjustment of influent COD con-centration and hydraulic retention time(HRT).The available volume of the ABR was 28.75 L.The results indicated that the adjustment of influent COD and HRT with the OLR ranged from 4 to 5.4 kg·m-3 ·d-1 could make all kinds of function flora that participated the anaerobic digestion process distribute more orderly in the ABR system,and the pollutant removal efficiency and the stability of the reactor were improved effec-tively.A COD removal rate above 90%can be achieved in the ABR when OLR is 4 kg·m-3 ·d-1,the in-fluent COD is 8 000 mg·L-1 and HRT is 48 h.

Key words:  anaerobic baffled reactor(ABR)  removal efficiency  organic load rate(OLR)  COD concen-tration  hydraulic retention time(HRT)