Schwarzenbeck N, Erley R, Wilderer P A
Institute of Water Quality Control and Waste Management, Technical University of Munich, Am Coulombwall, Garching, Germany.
Water Sci Technol. 2004;49(11-12):41-6.
Aerobic granular sludge was successfully cultivated in a lab-scale SBR-system treating malting wastewater with a high content of particulate organic matter (0.9 gTSS/L). At an organic loading rate (CODtotal) of 3.4 kg/(m3 x d) an average removal efficiency of 50% in CODtotal and 80% in CODdissolved was achieved. Fractionation of the COD by means of particle size showed that particles with a diameter less than 25-50 microm could be removed at 80% efficiency, whereas particles bigger than 50 microm were only removed at 40% efficiency. Tracer experiments revealed a dense sessile protozoa population covering the granules. The protozoa appeared to be responsible for primary particle uptake from the wastewater.
在实验室规模的SBR系统中成功培养了好氧颗粒污泥，该系统用于处理含有高含量颗粒有机物（0.9 gTSS/L）的麦芽废水。在有机负荷率（总化学需氧量）为3.4 kg/(m³·d)时，总化学需氧量的平均去除效率达到50%，溶解性化学需氧量的去除效率达到80%。通过粒径对化学需氧量进行分级显示，直径小于25 - 50微米的颗粒去除效率可达80%，而直径大于50微米的颗粒去除效率仅为40%。示踪实验表明，颗粒表面存在密集的固着原生动物群落。原生动物似乎负责从废水中摄取初级颗粒。
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