【摘要】 平行运行2组构型相同的低高径比SBR反应器，分别以高扩散性的NaAc(1~#反应器)和低扩散性的可溶性淀粉（2~#反应器）为单一碳源模拟生活污水，研究不同扩散性的两种碳源对生物除磷污泥颗粒化早期聚集特性的影响。结果表明：在培养初期可溶性淀粉（2~#反应器）通过絮凝作用最先在系统中形成粒径较大但疏松的絮体污泥，在培养后期NaAc(1~#反应器)能够显著加快污泥的聚集和颗粒化速度。反应器运行90d后，1~#系统初步实现了颗粒化，污泥粒径在200μm左右，颗粒污泥轮廓清晰，结构密实；2#系统污泥以絮体为主，粒径为50μm左右。两个系统中COD去除率均达90%以上，2~#反应器除磷率低于1~#反应器。1~#系统内Defluviicoccus(88%)占据绝对优势，除磷由Dechloromonas(5.46%)完成；2#系统优势菌属为Ornithinibacter(33.19%)和反硝化聚磷菌Tessaracoccus(38.34%)。更多还原

【Abstract】 Two groups of sequential batch reactors with the same configuration were run in parallel. NaAc(1~#reactor) with high diffusivity and soluble starch(2~# reactor) with low diffusivity were used as a single carbon source to simulate domestic sewage, respectively. The effects of two carbon sources with different diffusivity on the early aggregation characteristics of biological phosphorus removal sludge granulations were studied. The results showed that in the early stage of culture, soluble starch(2~# reactor) firstly formed loose floc sludge with large particle size through flocculation, and in the late stage of culture, NaAc(1# reactor) could significantly accelerate the aggregation and granulation of sludge. After 90 days of operation of the reactor, 1# system was initially granulated, and the particle size of most of the sludge was about 200 μm, and the granular sludge had clear contour and compact structure. The sludge in 2~# system was mainly floc with a particle size of about 50 μm. The COD removal rate of the two systems was above 90%, and the phosphorus removal rate of 2~# reactor was slightly lower than that of 1~# reactor.Defluviicoccus(88%) dominated the 1~# system, and phosphorus removal was completed by Dechloromonas(5.46%). The dominant bacteria in 2~# system were Ornithinibacter(33.19%) and Tessaracoccus(38.34%).更多还原