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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Anaerobic-Aerobic Sewage Treatment Using the Combination UASB-SBR Activated Sludge
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Anaerobic-Aerobic Sewage Treatment Using the Combination UASB-SBR Activated Sludge

机译：UASB-SBR活性污泥联合处理厌氧-好氧污水

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摘要

The performance of a pilot scale sewage treatment system composed of an upflow anaerobic sludge blanket (UASB) digester and a sequencing batch activated sludge reactor (SBR) is described. The system constitutes a simple, economic, and compact treatment option and is able to produce consistently a final effluent quality that is equal or better than that of a conventional activated sludge plant. The entire treatment system had a retention time of only 9 h and an average operational temperature of 25℃. Due to the efficient anaerobic pre treatment the aerobic sludge production was low and could easily be accommodated for stabilisation in the UASB reactor. The system exhibited excellent operational stability with full nitrification for aerobic sludge ages longer than 9 days. At shorter sludge ages there was excessive wash out of sludge particles and the sludge mass could not be maintained in the SBR reactor. Sludge settleability was good throughout the experimental investigation period of one year. The reduction of the reactor volume and oxygen consumption was more than 50% compared to conventional activated sludge. The anaerobic excess sludge had a high concentration and good stability so that its dewatering and final disposal was a relatively minor problem.
机译：描述了一个中试规模的污水处理系统的性能，该系统由上流厌氧污泥层（UASB）消化器和一个顺序批处理活性污泥反应器（SBR）组成。该系统构成了一种简单，经济和紧凑的处理方案，能够始终如一地产生与传统活性污泥厂相同或更高的最终废水质量。整个处理系统的保留时间仅为9小时，平均操作温度为25℃。由于高效的厌氧预处理，好氧污泥的产生量低，可以很容易地在UASB反应器中进行稳定化处理。该系统表现出出色的运行稳定性，对于需氧污泥的老化时间超过9天，完全硝化。在较短的污泥年龄下，污泥颗粒被过度冲洗掉，SBR反应器无法保持污泥质量。在一年的实验研究期间，污泥沉降性良好。与传统的活性污泥相比，反应器体积和氧气消耗的减少量超过50％。厌氧剩余污泥具有高浓度和良好的稳定性，因此其脱水和最终处置是一个相对较小的问题。

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