Performance comparison of a pilot-scale UASB and DHS system and activated sludge process for the treatment of municipal wastewater.
Performance comparison of a pilot-scale UASB and DHS system and activated sludge process for the treatment of municipal wastewater.
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DOI：
10.1016/j.watres.2007.02.027
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发表时间：
2007-06
期刊：
影响因子：
12.8
通讯作者：
M. Tandukar;A. Ohashi;H. Harada
中科院分区：
文献类型：
--
作者：
M. Tandukar;A. Ohashi;H. Harada
比较了UASB + DHS系统与活性污泥法（ASP）处理城市污水的中试效果。两个系统并行运行，相同的污水作为进水。连续运行300多天的试验结果表明，UASB+DHS系统对有机物的去除效果与ASP相当。两个系统的未过滤BOD去除率均超过90%。而UASB+DHS系统对病原菌的去除效果优于ASP系统。UASB+DHS工艺的剩余污泥产量是ASP工艺的1/15。而且，与ASP不同，UASB+DHS系统的运行不需要曝气，这使其成为一种经济的处理系统。考虑到上述观察结果，得出的结论是，UASB+DHS系统可以是一个具有成本效益和可行的选择，特别是对低收入国家的城市污水处理ASP。
This study compares the performance of a pilot-scale combination of UASB and DHS system to that of activated sludge process (ASP) for the treatment of municipal sewage. Both systems were operated in parallel with the same sewage as influent. The study was conducted for more than 300 days, which revealed that organic removal efficiency of UASB+DHS system was comparable to that of ASP. Unfiltered BOD removal by both systems was more than 90%. However, UASB+DHS system outperformed ASP for pathogen removal. In addition, volume of excess sludge production from UASB+DHS was 15 times smaller than that from ASP. Moreover, unlike ASP, there is no requirement of aeration for the operation of UASB+DHS system, which makes it an economical treatment system. Considering the above observations, it was concluded that UASB+DHS system can be a cost-effective and viable option for the treatment of municipal sewage over ASP, especially for low-income countries.