作　　者： ; ; ;

机构地区： 浙江万里学院生物与环境学院

出　　处： 《中国给水排水》 2008年第9期33-37,共5页

摘　　要： 以普通絮状活性污泥为种泥,采用人工配制的模拟生活污水,在序批式反应器(SBR)中成功地培养出了具有同步脱氮除磷功能的好氧颗粒污泥。研究表明,通过提高COD负荷和逐步减少污泥沉降时间以造成选择压,可促进颗粒污泥的形成。成熟的颗粒污泥形态完整、结构致密、表面光滑、外观呈橙黄色,为近似球形或椭球形,粒径大多在0.5～1.0mm之间,污泥体积指数为27.0mL/g,MLSS为6800mg/L。该颗粒污泥对NH4+-N的去除率接近100%,对COD和PO34--P的平均去除率均在80%以上,而且颗粒污泥中的微生物种群具有多样性,所形成的微生态系统更稳定,抗外界干扰及自身恢复调节能力较强。 The successful cultivation of aerobic granular sludge used for simultaneous nitrogen and phosphorus removal in sequencing batch reactor （SBR） was performed using a synthetic domestic wastewater and conventional flocculent activated sludge as seeding sludge. The results show that aerobic granular sludge can be cultured by decreasing the sludge sedimentation time and increasing COD loading rate resulting in the selective pressure. The matured aerobic granular sludge has a very compact and regular structure, a smooth surface, an orange yellow appearance and approximately spherical or spheroidal shape with a size of 0.5 to 1.0 mm, MLSS of 6 800 mg/L and SVI of 27.0 mL/g. The average removal rate of ammonia nitrogen is nearly 100% and that of COD and PO4^3- -P is both above 80%. The microorganism population in the granular sludge has a diversification, the formed microecosystem is more stable and the ability to withstand shock loading and the self-regulation ability are stronger.

关 键 词： 序批式反应器 好氧颗粒污泥 同步脱氮除磷

领　　域： [环境科学与工程]