好氧颗粒污泥的培养及其性能

Cultivation and characteristic of aerobic granular sludge

为探讨好氧污泥颗粒化过程及其性能,在气升式间歇反应器中培养好氧颗粒污泥,并对模拟生活污水的处理效果进行连续监测。实验表明,成熟好氧颗粒污泥性能良好,沉降速度最高为33.85 m/h,SVI降到了32.24 L/g,颗粒强度达到82.63%,颗粒污泥的耗氧速率(OURW)为1.20 mg/(g.min)-1。这些理化指标均优于普通的活性污泥,所形成的好氧污泥颗粒长期稳定存在。好氧颗粒污泥对污染物的去除能力较强,COD去除率高达96.10%,氨氮和总磷的去除率也高达80%,且出水水质稳定。

The paper is an attempt to cultivate the aerobic granular sludge was cultivated in Sequencing Batch Airlift Reactor（SBAR） , study the formation of aerobic granular sludge and the granulation process, and continuously observe the treating effects of municipal wastewater. The results show that well-cultivated aerobic granular sludge offers the settling velocity of 33.85 m/h, SVI of 32.24 L/g and the strength up to 82.63% and specific oxygen-utilizing rate of sludge （OURw） of about 1.20 mg/（ g . min）^-1 The granular activated sludge exhibits better proper- ties than conventional activated sludge and so can last for a longer period. The granular activated sludge shows the COD removal rate up to 96. 10% and the removal rates of NH3 - N and TP up to 80% respectively, and yields more stable quality of effluent water.