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MITIGATING THE COST OF DENITRIFICATION IN FIXED FILM PLANT WITH NITRATE RECYCLE

机译:硝酸盐循环减少固定化膜厂的反硝化成本

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This paper describes the extensive modeling carried out to determine the design expansionrequirements for each unit process of the Littleton/Englewood wastewater treatment plant. TheMass Balance Model allows an accurate determination of the number and size of each unitprocess in the plant.Studies of alternative post-denitrification processes are presented, together with details of thefinal options selected for implementation at the plant. Various full-scale operating plants werevisited which included MBBR, BAF and denitrification filter technologies for denitrificationwith methanol. The results of pilot plant trials using BAF technology at the Littleton/Englewoodwastewater treatment plant are described.Implementation of an intra-plant denitrification recycle is described. The results of full-scaletests are presented. By incorporating the intra-plant recycle, redundant post-denitrification unitsare avoided. Other ancillary benefits include the attenuation of odors in preliminary and primarytreatment processes.
机译:本文介绍了为确定Littleton / Englewood废水处理厂的每个单元过程的设计扩展要求而进行的广泛建模。质量平衡模型可以准确确定工厂中每个单元过程的数量和大小。本文介绍了替代后脱硝过程的研究,以及为工厂实施选择的最终方案的详细信息。考察了各种规模的运营工厂,包括MBBR,BAF和用于甲醇反硝化的反硝化过滤技术。描述了在Littleton / Englewood废水处理厂使用BAF技术进行的中试工厂试验的结果,并描述了厂内反硝化循环的实施。给出了全面测试的结果。通过合并工厂内的回收利用,避免了多余的后脱硝装置。其他辅助好处包括在初步和初步处理过程中减少气味。

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