导　　师： 佘宗莲

学科专业： H3002

授予学位： 硕士

作　　者： ;

机构地区： 中国海洋大学

摘　　要： 在常温(21℃～25℃)条件下，用实验室规模的2个abr反应器进行颗粒污泥培养实验。其中一个反应器(称为b反应器)在接种厌氧污泥的同时加入聚丙烯酰胺和膨润土的混合液，另一个反应器(称为a反应器)作为对照只接种厌氧污泥，研究了聚丙烯酰胺和膨润土对abr反应器中颗粒污泥的形成和反应器运行效果的影响。研究结果表明： (1)聚丙烯酰胺和膨润土的加入，促进了abr反应器中颗粒污泥的形成。 反应器运行162天后， b反应器每个隔室中均出现大量颗粒污泥，4隔室中粒径>0.5mm的颗粒含量达到57.6％～72.7％；而a反应器仅第1隔室中形成大量颗粒污泥，粒径大于0.5mm的颗粒含量达到67.3％，略低于同期b反应器中的颗粒含量，其它3个隔室中粒径大于0.5mm的颗粒含量仅占31.3％～34.7％，约为同期b反应器对应隔室的一半。 (2)聚丙烯酰胺和膨润土的加入，提高了abr反应器的运行效果。 ①a和b反应器以相同的容积负荷同时启动，根据运行过程中容积负荷提高程度的不同，将2个反应器整个运行过程分为不同的阶段。b反应器运行效果较好，容积负荷提高较快，经过162天，共运行了7个阶段，最终容积负荷(olr)达到4.15 kgcod/m3·d，水力停留时间(hrt)缩短为12小时；而a反应器历时162天，只运行了5个阶段，容积负荷最大值仅为2.23 kgcod/m3·d，水力停留时间最短为24小时。 ②容积负荷由初始的0.5 kgcod/m3·d提高到2.23 kgcod/m3·d所需运行时间，a反应器为162天，而b反应器仅为130天。b反应器运行50天后，cod去除率就可以保持在85％以上，而a反应器运行101天后，cod去除率才稳定在85％以上。 ③2个反应器各隔室中污泥的vss/ss值均随着培养时间的增加呈增加趋势，而且都以第1隔室中污泥的有机物含量增加最为明显。反应器运行到第128天时，b反应器各隔室中污泥的vss/ss值均大于a反应器对应的隔室；试验结束时，a和b反应器中污泥vss/ss值的平均值分别为0.787和0.862。 Two lab-scale Anaerobic Baffled Reactors are used in this study to culture granular sludge under room temperature/(21℃～25℃/). One of the two reactors /(called reactor B/) is put in inert carriers at the same time with anaerobic sludge, as the other one /(called reactor A /)is put in anaerobic sludge only acting as a control reactor. This study assesses the influence of the Polyacrylamide and Bentonite addition on granule formation and disposing effect of ABR reactor. The result indicates that: /(1/) Polyacrylamide and Bentonite addition accelerates the formation of granule of the ABR reactor. After 162 days, abundant granular sludge are obtained in each compartment of reactor B, but only in the initial compartment of reactor A. Granules bigger than 0.5 millimeter reach 57.6/% to 72.7/% in the four compartments of reactor B and only reach 67.3/% in the first compartment of reactor A, this value is slightly lower than the first compartment of reactor B at the same period. Granules bigger than 0.5 millimeter reach 31.3/% to 34.7/% in the other three compartments of reactor A, which is almost half value to the corresponding compartments of reactor B. /(2/) Polyacrylamide and Bentonite addition improves the disposing efficiency of ABR reactor. ①Reactor A and reactor B start-up at the same time with same volume load. According to the different increasing extent of volume load, the entire process of the two reactors is divide into different stages. Reactor B functions better than reactor A and the volume load increases faster. After 162 days, reactor B operates 7 stages, the final volume load /(OLR/) reach 4.15 kgCOD//m~3·d and the shortest hydraulic retention time /(HRT/) reach 12 hours. For reactor A, it just operates 5 stages after runing 162 days, the maximum load capacity is only 2.23 kgCOD//m~3·d and the shortest HRT is 24 hours. ②The required runing time to increace the volume load from the initial 0.5 kgCOD//m3·d to 2.23 kgCOD//m~3·d is 162 days for reactor A, but only 130 days for reactor B. After the reactor B operates 50 days, the COD removal efficiency can be maintained at more than 85/%. The reactor A has to run 110 days to reach this level. ③The VSS//SS value of the two reactors increase with the operate time, and the increase of organic contents are most significant in the first compartment of the two reactors. When the reactor B operates to 128 days, the VSS//SS value in every compartment is bigger than the corresponding compartments of reactor A. At the end of the experiment, the average value of VSS//SS is 0.787 and 0.862 respectively.

关 键 词： 反应器 惰性载体 颗粒污泥 常温

分 类 号： [X703]

领　　域： [环境科学与工程]