Application of high rate nitrifying trickling filters to remove low concentrations of ammonia from reclaimed municipal wastewater

Ben Van Den Akker; Mike Holmes; Michael Short; Nancy Cromar; Howard Fallowfield

doi:10.2166/wst.2010.708

Application of high rate nitrifying trickling filters to remove low concentrations of ammonia from reclaimed municipal wastewater

Ben Van Den Akker, Mike Holmes, Michael Short, Nancy Cromar, Howard Fallowfield

Research output: Contribution to conference › Paper › peer-review

8 Citations (Scopus)

Abstract

The interference of ammonia with the chlorination process is a problem for many reclaimed water treatment plant operators. This paper presents the findings from a series of pilot experiments that investigated the efficacy of high flow rate nitrifying trickling filters (NTFs) for the removal of low concentrations of ammonia (0.5-3.0mgNL^-1) from reclaimed wastewater. Results showed that nitrification was impeded by a combination of high organic carbon loads and aquatic snails, which consumed much of the active biomass. With adequate snail control, nitrification rates (0.3-1.1 gNH₄-Nm^-2 d ^-1) equivalent to that of traditional wastewater NTFs were achieved, despite operating under comparably low ammonia feed concentrations and high hydraulic flow rates.

Original language	English
Pages	2425-2432
Number of pages	8
DOIs	https://doi.org/10.2166/wst.2010.708
Publication status	Published - 16 Jul 2010
Event	7th IWA conference on water reclamation and reuse - Duration: 20 Sept 2009 → …

Conference

Conference	7th IWA conference on water reclamation and reuse
Period	20/09/09 → …

Keywords

Ammonia
Chlorine demand
Nitrification
Reclaimed wastewater
Snails
Trickling filters

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10.2166/wst.2010.708

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abstract = "The interference of ammonia with the chlorination process is a problem for many reclaimed water treatment plant operators. This paper presents the findings from a series of pilot experiments that investigated the efficacy of high flow rate nitrifying trickling filters (NTFs) for the removal of low concentrations of ammonia (0.5-3.0mgNL-1) from reclaimed wastewater. Results showed that nitrification was impeded by a combination of high organic carbon loads and aquatic snails, which consumed much of the active biomass. With adequate snail control, nitrification rates (0.3-1.1 gNH4-Nm-2 d -1) equivalent to that of traditional wastewater NTFs were achieved, despite operating under comparably low ammonia feed concentrations and high hydraulic flow rates.",

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AU - Van Den Akker, Ben

AU - Holmes, Mike

AU - Short, Michael

AU - Cromar, Nancy

AU - Fallowfield, Howard

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N2 - The interference of ammonia with the chlorination process is a problem for many reclaimed water treatment plant operators. This paper presents the findings from a series of pilot experiments that investigated the efficacy of high flow rate nitrifying trickling filters (NTFs) for the removal of low concentrations of ammonia (0.5-3.0mgNL-1) from reclaimed wastewater. Results showed that nitrification was impeded by a combination of high organic carbon loads and aquatic snails, which consumed much of the active biomass. With adequate snail control, nitrification rates (0.3-1.1 gNH4-Nm-2 d -1) equivalent to that of traditional wastewater NTFs were achieved, despite operating under comparably low ammonia feed concentrations and high hydraulic flow rates.

AB - The interference of ammonia with the chlorination process is a problem for many reclaimed water treatment plant operators. This paper presents the findings from a series of pilot experiments that investigated the efficacy of high flow rate nitrifying trickling filters (NTFs) for the removal of low concentrations of ammonia (0.5-3.0mgNL-1) from reclaimed wastewater. Results showed that nitrification was impeded by a combination of high organic carbon loads and aquatic snails, which consumed much of the active biomass. With adequate snail control, nitrification rates (0.3-1.1 gNH4-Nm-2 d -1) equivalent to that of traditional wastewater NTFs were achieved, despite operating under comparably low ammonia feed concentrations and high hydraulic flow rates.

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KW - Chlorine demand

KW - Nitrification

KW - Reclaimed wastewater

KW - Snails

KW - Trickling filters

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Application of high rate nitrifying trickling filters to remove low concentrations of ammonia from reclaimed municipal wastewater

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Keywords

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