The use of bottle caps as submerged aerated filter medium

In this study, a submerged aerated filter (SAF) using bottle caps as a support medium was evaluated. The system was fed with effluent from an upflow anaerobic sludge blanket system at ETE 2-South wastewater treatment plant, under different volumetric organic load rates (VOLRs). The population of a p...

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Bibliographic Details
Published in:Water science and technology 2014-01, Vol.69 (7), p.1518-1525
Main Authors: DE OLIVEIRA, Laurence Damasceno, AMIR MOHAGHEGH MOTLAGH, GOEL, Ramesh, DE SOUZA MISSAGIA, Beatriz, DE ABREU, Benício Alves, LAUTENSCHLAGER, Sandro Rogério
Format: Article
Language:English
Subjects:
Aeration
Anaerobic treatment
Applied sciences
Bacteria
Chemical oxygen demand
Conversion
Exact sciences and technology
Filtration - instrumentation
Fluorescence
Fluorescence in situ hybridization
Food Packaging
Load distribution
Microorganisms
Nitrification
Nitrifying bacteria
Organic Chemicals - isolation & purification
Organic loading
Organic matter
Pilot Projects
Pollution
Removal
Sludge
Wastewater
Wastewater treatment
Wastewater treatment plants
Water Purification - instrumentation
Water treatment and pollution
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Summary:In this study, a submerged aerated filter (SAF) using bottle caps as a support medium was evaluated. The system was fed with effluent from an upflow anaerobic sludge blanket system at ETE 2-South wastewater treatment plant, under different volumetric organic load rates (VOLRs). The population of a particular nitrifying microbial community was assessed by fluorescent in situ hybridization with specific oligonucleotide probes. The system showed an average removal of chemical oxygen demand (COD) equal to 76% for VOLRs between 2.6 and 13.6 kg COD m(-3)_media.day(-1). The process of nitrification in conjunction with the removal of organic matter was observed from applying VOLRs lower than 5.5 kg COD m(-3)_media.day(-1) resulting in 78% conversion of NH4(+)-N. As the applied organic load was reduced, an increase in the nitrifying bacteria population was observed compared with total 4'-6-diamidino-2-phenylindole (DAPI) stained cells. Generally, SAF using bottle caps as a biological aerated filter medium treating wastewater from an anaerobic system showed promising removal of chemical oxygen demand (COD) and conversion of NH4(+)-N.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2014.008