好氧颗粒污泥快速培养的方法研究

以普通絮状活性污泥为接种污泥,采用人工配制模拟生活污水,利用SBR反应器,研究了系统内分别投加细土和厌氧颗粒对好氧颗粒污泥快速培养的影响。结果表明:2种方法均能促进好氧颗粒的形成,投加细土的反应器运行3周后得到粒径0.4~0.5 mm的颗粒,投加厌氧颗粒的反应器15 d后即获得平均粒径0.8 mm的颗粒,而空白试验运行1个月后颗粒化启动成功,平均粒径仅为0.3 mm。扫描电镜结果显示,培养出的好氧颗粒结构致密,孔隙率高,颗粒外表面存在大量杆菌和丝状菌。

EXPERIMENTAL RESEARCH ON THE RAPID FORMATION OF AEROBIC GRANULAR SLUDGE

The influence of the rapid formation of aerobic granular sludge was investigated in sequencing batch reactors ( SBR) inoculated conventional activated sludge with synthetic domestic wastewater， adding fine soil and anaerobic granules respectively． The results showed that both methods could promote the formation of aerobic granules，the average particle size of the granules in the reactor dosing fine soil was between 0. 4 ～ 0. 5 mm three weeks later，and particle size of the granules in the reactor adding anaerobic granules was 0. 8 mm in 15 days，as the blank experiment was 0. 3 mm after running a month． SEM shows that the cultured aerobic granular has dense structure，high porosity，and a large number of bacillus and filamentous on the surface of the particles．