颗粒活性炭对AnDMBR污水处理性能与动态膜性质的影响  

EFFECT OF GRANULAR ACTIVATED CARBON ON WASTEWATER TREATMENT PERFORMANCE AND DYNAMIC MEMBRANE PROPERTIES IN AN AnDMBR

作　　者：屈艺 胡以松[1,2] 刘乐[1,2] 程东兴 杨媛 陈荣[1,2] 王晓昌[1,2] QU Yi;HU Yisong;LIU Le;CHENG Dongxing;YANG Yuan;CHEN Rong;WANG Xiaochang(Shanxi Key Laboratory of Environmental Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;Key Laboratory of Northwest Water Resource,Environment and Ecology,Ministry of Education,Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]西安建筑科技大学陕西省环境工程重点实验室,西安710055 [2]西安建筑科技大学西北水资源与环境生态教育部重点实验室,西安710055

出　　处：《环境工程》2024年第2期104-112,共9页Environmental Engineering

基　　金：陕西省自然科学基础研究计划项目(2022JM-237);中国博士后科学基金(2021MD703870);陕西省科技创新团队项目(2019TD-025)。

摘　　要：构建了颗粒活性炭(GAC)强化型厌氧动态膜生物反应器(AnDMBR),考察了GAC投加量(3,6,10,20 g/L)对工艺的过滤性能、污染物去除、产甲烷性能以及动态膜性质的影响,探究了GAC的物化和生物强化作用。研究结果表明,与未投加GAC相比,随着投加GAC浓度的增大,浊度去除率分别提高了3.1~12.3百分点,COD去除率分别提高了5.7~12.1百分点,GAC投加量越大对污染物去除的贡献越大。与未投加GAC相比,随着投加GAC浓度的增大,甲烷总产率分别提高了23.7%、34.6%、24.2%、8.3%,最佳GAC投加量为6 g/L。投加GAC改善了AnDMBR的污染物去除性能和产甲烷性能。GAC的投加有利于降低厌氧污泥和动态膜中EPS的含量,削减出水中荧光性溶解性有机物的含量,减小跨膜压差(TMP)的增长率。同时GAC的吸附与生物富集效应可形成生物活性炭,增大污泥粒径,改善污泥性质和动态膜的多孔结构,对AnDMBR的长期运行起到了积极作用。In this paper,a granular activated carbon(GAC)enhanced anaerobic dynamic membrane bioreactor(AnDMBR)was constructed.To explore the physicochemical and biological effects of GAC addition on the AnDMBR,the impact of different GAC dosages(3,6,10,20 g/L)on the filtration performance,pollutants removal,methane production and the characteristics of anaerobic sludge and dynamic membrane was investigated.The results showed that,compared to the control reactor without GAC addition,the turbidity removal increased by 3.1 to 12.3 percentage points,and the COD removal increased by 5.7 to 12.1 percentage points.The higher the GAC dosage,the greater the contribution to pollutant removal.Compared to the control reactor without GAC addition,the total methane yield increased by 23.7%,34.6%,24.2%,and 8.3%,respectively,with the optimal GAC dosage of 6 g/L for enhanced methane production.Adding GAC can improve the pollutant removal performance and the methanogenesis of the AnDMBR.The supplementation of GAC can reduce the content of extracellular polymeric substances(EPS)in the anaerobic sludge and dynamic membrane as well as the content of all fluorescent dissolved organic matter in the effluent,leading to a decreased growth rate of transmembrane pressure(TMP).GAC could adsorb and enrich biomass to form biological activated carbon,which increased the particle size of anaerobic sludge,modified sludge characteristics,and enhanced the porous structure of the cake layer.These features played a positive role in the long-term stable operation of the AnDMBR.

关 键 词：厌氧动态膜生物反应器 颗粒活性炭 生活污水 过滤性能 污泥性质 

分 类 号：X703[环境科学与工程—环境工程]