Submerged Structured Sheet Media (SSM) IFAS and SSM Fixed-Film Only Systems for Simultaneous Carbon Oxidation, Nitrification and Denitrification and Implications

Li, Hua; Zhu, Jinying; Kulick, Frank M.; Bertschman, Dan; Koch, K.; Rothermel, Bryan

doi:10.2175/193864713813685304

proc water environ fed

2013

DOI: 10.2175/193864713813685304

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Submerged Structured Sheet Media (SSM) IFAS and SSM Fixed-Film Only Systems for Simultaneous Carbon Oxidation, Nitrification and Denitrification and Implications

Hua Li¹,

Jinying Zhu²,

Frank M. Kulick³

et al.

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Practical experience with full-scale structured sheet media (SSM) integrated fixed-film activated sludge (IFAS) systems for nitrification

Li¹,

Zhu²,

Flamming

et al. 2014

Water Science and Technology

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Many wastewater treatment plants in the USA, which were originally designed as secondary treatment systems with no or partial nitrification requirements, are facing increased flows, loads, and more stringent ammonia discharge limits. Plant expansion is often not cost-effective due to either high construction costs or lack of land. Under these circumstances, integrated fixed-film activated sludge (IFAS) systems using both suspended growth and biofilms that grow attached to a fixed plastic structured sheet media are found to be a viable solution for solving the challenges. Multiple plants have been retrofitted with such IFAS systems in the past few years. The system has proven to be efficient and reliable in achieving not only consistent nitrification, but also enhanced bio-chemical oxygen demand removal and sludge settling characteristics. This paper presents long-term practical experiences with the IFAS system design, operation and maintenance, and performance for three full-scale plants with distinct processes; that is, a trickling filter/solids contact process, a conventional plug flow activated sludge process and an extended aeration process.

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Practical experience with full-scale structured sheet media (SSM) integrated fixed-film activated sludge (IFAS) systems for nitrification

Li¹,

Zhu²,

Flamming

et al. 2014

Water Science and Technology

View full text Add to dashboard Cite

show abstract

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Submerged Structured Sheet Media (SSM) IFAS and SSM Fixed-Film Only Systems for Simultaneous Carbon Oxidation, Nitrification and Denitrification and Implications

Cited by 1 publication

References 0 publications

Practical experience with full-scale structured sheet media (SSM) integrated fixed-film activated sludge (IFAS) systems for nitrification

Practical experience with full-scale structured sheet media (SSM) integrated fixed-film activated sludge (IFAS) systems for nitrification

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