好氧颗粒污泥.pptVIP

好氧颗粒污泥 Yao Chen(2008)—四川大学 二、颗粒污泥照片 好氧颗粒污泥 Yao Chen(2008)—四川大学 二、颗粒污泥照片 好氧颗粒污泥 DGGE： 变性梯度凝胶电泳 ----一种DNA检测技术 Yao Chen(2008)—四川大学 二、颗粒污泥照片 好氧颗粒污泥 去除COD，N Shu-Fang Yang, Joo-Hwa Tay(2007)—新加坡Nanyang Technological University 二、颗粒污泥照片 Yong-Qiang Liu , Joo-Hwa Tay(2007)—新加坡Nanyang Technological University 二、颗粒污泥照片 Yong-Qiang Liu , Joo-Hwa Tay(2007)—新加坡Nanyang Technological University 二、颗粒污泥照片 好氧颗粒污泥颗径分布 二、颗粒污泥照片 三、好氧颗粒污泥特征 好氧颗粒污泥外观一般为橙黄色,圆形或椭圆形. 成熟的好氧颗粒污泥有光滑的表面。 与普通的絮状污泥相比，好氧颗粒污泥的理化特征 如下： 类别 比重 (g/cm3) 颗粒 (mm) 含水率 (%) SVI (mL/g) 耗氧速率 (mg/g min) 沉降时间 (min) 颗粒污泥 1.0068~1.0072 1~5 (9) 97~98 20~45 1.27 1 絮状污泥 1.002~1.006 ─ 99 100~150 0.8 30 三、好氧颗粒污泥特征 好氧颗粒污泥的沉降性能 四、获得好氧颗粒污泥的反应器 日前，可获得好氧颗粒污泥的反应器有四种（或三种）：SBR、SBAR、AUFB、BASR SBR ── Sequencing Batch Reactor(塔式) SBAR── Sequencing Batch Airlift Reactor AUFB── aerobic up fluidized bed (日本) BASR── Biofilm Airlift Suspension Reactor 四、获得好氧颗粒污泥的反应器 三种反应器中颗粒污泥的特性 理化特征 污泥干重 (gSS/L) 生物量浓度 (gSS/L污泥) 颗粒平均直径 (mm) 颗粒比表面积 (m2/m3) SBAR 4 48 1.0 758 SBR 3 12 2.0 340 BASR 0.7 15 0.35 1700 五、影响好氧颗粒化因素 Substrate composition Organic loading rate 2.5 to 15 kgCOD/m3 .d Hydrodynamic shear force Settling time Hydraulic retention time Aerobic starvation Presence of calcium ion in feed Intermittent feeding strategy Dissolved oxygen, pH and temperature Seed sludge Reactor configuration Inhibition to aerobic granulation 五、影响好氧颗粒化因素 六、颗粒污泥微生物结构与种群 Microbial structure Confocal laser-scanning microscopy (CLSM) Microbial diversity─ molecular biotechnology Microbial diversity of aerobic granules has been studied by molecular biotechnology Techniques. Heterotrophic, nitrifying, denitrifying, P-accumulating bacteria, and glycogen- accumulating bacteria have been identified in aerobic granules developed under different conditions. The microbial diversity of aerobic granules is closely related to the composition of culture media, in which they are developed and structure of aerobic granules. 六、颗粒污泥