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Water Sci Technol. 2012;65(9):1713-9. doi: 10.2166/wst.2012.929.
This work aims to compare the operation costs (energy, reagents, waste management) for the three layouts usually used in wastewater treatment plants incorporating biofilters, using technical and economical data acquired during 10 years of operation of a Parisian plant (Seine Centre, 240,000 m(3) d(-1) -800,000 equivalent inhabitants). The final objective is to establish general economical data and tendencies that can be translated from our study to any biofiltration plant. Our results evidenced the savings achieved through the treatment process combining upstream and downstream denitrification. To use this layout reduced the operating costs by some 10% as compared with conventional processing only comprising downstream denitrification. Operating costs were respectively estimated at 37 and 34 €/1,000 m(3) for downstream denitrification and combining upstream and downstream denitrification layouts.
本工作旨在比较三种通常用于结合生物滤池的污水处理厂的运行成本（能源、试剂、废物管理），使用在一个巴黎工厂（塞纳中心，240000 立方米/天-80 万当量居民）十年运行期间获得的技术和经济数据。最终目的是建立可从我们的研究推广到任何生物过滤厂的通用经济数据和趋势。我们的研究结果证明了在处理过程中结合上游和下游反硝化所实现的节约。与仅包含下游反硝化的常规处理相比，使用这种布局可降低约 10%的运行成本。下游反硝化和结合上游和下游反硝化布局的运行成本分别估计为 37 和 34 欧元/1000 立方米。
