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Nitrification performance of high rate nitrifying trickling filters at low ammonia concentrations: does the aspect ratio matter?

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dc.contributor.authorMai, L.
dc.contributor.authorLian, Y.
dc.contributor.authorvan den Akker, B.
dc.contributor.authorFallowfield, H.J.
dc.date.issued2019
dc.description.abstractNitrifying trickling filters (NTFs) are often introduced to pre-treat waters before chlorination process, to reduce the ammonia-driven chlorine consumption in wastewater treatment. As a passive aerated system, the only power needed is to transport the water to the top of the filter for distribution. Thus, understanding the role of filter aspect ratio on ammonia oxidation might save energy cost. In the present study, a pilot-scale comparison NTF system was conducted on two filters with different aspect ratios (height/diameter) and the same specific surface area. The nitrification efficiencies of these two filters under relatively low influent ammonia-nitrogen concentrations (1.0-4.0 mg NH<sub>4</sub>-N L<sup>-1</sup>) were investigated. Results obtained from the present study indicated that the constructional aspect ratio of NTF showed no significant effect on nitrification performance of NTFs. Additionally, the operational parameters showed similar effects on nitrification in NTFs with different aspect ratios. Our findings could provide important information for the construction design of future NTFs.
dc.identifier.citationEnvironmental Science and Pollution Research, 2019; 26(20):20520-20529
dc.identifier.doi10.1007/s11356-019-05256-1
dc.identifier.issn0944-1344
dc.identifier.issn1614-7499
dc.identifier.orcidvan den Akker, B. [0000-0002-1937-6097]
dc.identifier.urihttps://hdl.handle.net/11541.2/34487
dc.language.isoen
dc.publisherSPRINGER HEIDELBERG
dc.relation.fundingChina Scholarship Council
dc.rightsCopyright 2019 Springer-Verlag GmbH Germany, part of Springer Nature.
dc.source.urihttps://doi.org/10.1007/s11356-019-05256-1
dc.subjectAmmonia
dc.subjectWater Pollutants
dc.subjectFiltration
dc.subjectPilot Projects
dc.subjectBioreactors
dc.subjectWater Purification
dc.subjectOxidation-Reduction
dc.subjectNitrification
dc.titleNitrification performance of high rate nitrifying trickling filters at low ammonia concentrations: does the aspect ratio matter?
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916771726301831

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