间歇曝气水平潜流人工湿地中氮和有机物的去除

Q3 Social Sciences

Journal of Urban and Environmental Engineering Pub Date : 2020-12-15 DOI:10.4090/juee.2020.v14n2.175-181

J. G. T. Queluz, M. Garcia

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引用次数: 0

摘要

本工作的目的是评估间歇曝气对水平潜流人工湿地（HFCW）中铵（NH4+）、总氮（TN）和化学需氧量（COD）的去除效果。研究了两种HFCW，一种是不充气的，另一种是间歇充气的，都用宽叶香蒲栽培。每个系统接收8.6L天-1的合成废水，产生3天的水力停留时间。两个系统对COD的去除率均较高（>90%）；间歇充气HFCW对COD的去除率较高。此外，非曝气系统对TN（48.8%）和NH4+（57.7%）的去除率有限，而在曝气系统中，TN（81.2%）和NH4+98.6%）的去除效率令人满意。因此，结果表明，通过间歇曝气，硝化和反硝化同时发生，提高了HFCW对TN和NH4+的去除性能。

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REMOVAL OF NITROGEN AND ORGANIC MATTER IN AN INTERMITTENTLY AERATED HORIZONTAL SUBSURFACE FLOW CONSTRUCTED WETLAND

The objective of this work was to evaluate the effect of intermittent aeration on the removal of ammonium (NH4+), total nitrogen (TN) and chemical oxygen demand (COD) in a horizontal subsurface flow constructed wetland (HFCW). Two HFCWs were studied, one non-aerated and another aerated intermittently, and both cultivated with Typha latifolia. Each system received 8.6 L day-1 of synthetic wastewater, resulting in 3 days of hydraulic retention time. The two systems displayed high efficiencies in the removal of COD (>90%); however, the intermittently aerated HFCW showed a higher rate of COD removal. Additionally, the removal of TN (48.8%) and NH4+ (57.7%) in the non-aerated system was limited, while in the aerated system, the efficiencies of TN (81.2%) and NH4+ (98.6%) removal were satisfactory. Thus, the results indicate that via intermittent aeration, nitrification and denitrification occur simultaneously, improving the performance of HFCW in the removal of TN and NH4+.

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来源期刊

Journal of Urban and Environmental Engineering Social Sciences-Urban Studies

CiteScore

0.90

自引率

0.00%

发文量

审稿时长

24 weeks

期刊介绍： Journal of Urban and Environmental Engineering (JUEE) provides a forum for original papers and for the exchange of information and views on significant developments in urban and environmental engineering worldwide. The scope of the journal includes: (a) Water Resources and Waste Management [...] (b) Constructions and Environment[...] (c) Urban Design[...] (d) Transportation Engineering[...] The Editors welcome original papers, scientific notes and discussions, in English, in those and related topics. All papers submitted to the Journal are peer reviewed by an international panel of Associate Editors and other experts. Authors are encouraged to suggest potential referees with their submission. Authors will have to confirm that the work, or any part of it, has not been published before and is not presently being considered for publication elsewhere.