Maximizing trickling filter nitrification rates through biofilm control: Research review and full scale application

1997 ◽  
Vol 36 (1) ◽  
Keyword(s):  
Full Scale ◽  
Research Review ◽  
Trickling Filter ◽  
Biofilm Control ◽  
Control Research

Maximizing trickling filter nitrification rates through biofilm control: research review and full scale application

1997 ◽  
Vol 36 (1) ◽  
pp. 255-262 ◽  
Author(s):  
Denny S. Parker ◽  
Tom Jacobs ◽  
Erich Bower ◽  
Dennis W. Stowe ◽  
Greg Farmer
Keyword(s):  
Control Strategies ◽  
Treatment Plant ◽  
Ammonia Nitrogen ◽  
Full Scale ◽  
Research Review ◽  
Trickling Filter ◽  
Trickling Filters ◽  
The Past ◽  
Biofilm Control ◽  
Control Research

Tertiary nitrifying trickling filters (NTFs) at the Littleton/Englewood wastewater treatment plant provide for nitrification to meet seasonally varying effluent requirements for ammonia nitrogen. Operation of the full-scale facilities during the past two years demonstrates highly efficient oxidation of ammonia and the effectiveness of biofilm control strategies. A decline in nitrification performance caused by predators was successfully corrected by the use of a special alkaline backwash feature which controlled the level of larval development within the NTFs.

Dynamic simulation of a low loaded trickling filter for nitrification

1999 ◽  
Vol 39 (4) ◽  
pp. 163-168 ◽  
Author(s):  
K. Seggelke ◽  
F. Obenaus ◽  
K.-H. Rosenwinkel
Keyword(s):  
Dynamic Simulation ◽  
Weather Conditions ◽  
Full Scale ◽  
Trickling Filter ◽  
Examination Period ◽  
Trickling Filters ◽  
Biofilm Model ◽  
Measuring Campaign

For this report, an existing biofilm model was examined in regard to its suitability for the simulation of full scale trickling filter for nitrification. The system was calibrated using the results ascertained in a measuring campaign under dry weather conditions. The verification was done using the results of a second examination period which included spells of stormwater input. It was possible for all periods to satisfactorily illustrate the degradation performance of the simulated trickling filters in regard to dynamics and quantity.

Tentative Nitrogen Removal with Fixed Bed Processes in Malmö Sewage Treatment Plant

1990 ◽  
Vol 22 (1-2) ◽  
pp. 239-250 ◽  
Author(s):  
B. Andersson
Keyword(s):  
Activated Sludge ◽  
Nitrogen Removal ◽  
Sewage Treatment ◽  
Fixed Bed ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Full Scale ◽  
Trickling Filter ◽  
Test Program ◽  
Made In

A test program for the use of fixed bed processes in systems for nitrogen removal at an advanced sewage treatment plant is described. Results from studies on nitrification in a full scale trickling filter plant with different filter depths and at different wastewater temperatures are presented. Results from full scale experiments with denitrification/nitrification in a retrofitted activated sludge plant are also presented. The effect of an aerated submerged fixed bed in the aeration basin on nitrification was investigated. Observations of the biofilm formed on the fixed bed were made in microscope.

scholarly journals Complete Genome Sequence of Biofilm-Forming Strain Staphylococcus haemolyticus S167

2016 ◽  
Vol 4 (3) ◽  
Author(s):  
Jisoo Hong ◽  
Jonguk Kim ◽  
Byung-Yong Kim ◽  
Jin-Woo Park ◽  
Jae-Gee Ryu ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Biofilm Formation ◽  
Complete Genome ◽  
Molecular Level ◽  
Biofilm Control ◽  
Staphylococcus Haemolyticus ◽  
Genomic Analyses ◽  
Control Research

Staphylococcus haemolyticus S167 has the ability to produce biofilms in large quantities. Genomic analyses revealed information on the biofilm-related genes of S. haemolyticus S167. Detailed studies of biofilm formation at the molecular level could provide a foundation for biofilm control research.

Vertical distribution of nitrifying populations in bacterial biofilms from a full-scale nitrifying trickling filter

2006 ◽  
Vol 8 (11) ◽  
pp. 2036-2049 ◽  
Author(s):  
Pär Lydmark ◽  
Magnus Lind ◽  
Fred Sörensson ◽  
Malte Hermansson
Keyword(s):  
Vertical Distribution ◽  
Full Scale ◽  
Bacterial Biofilms ◽  
Trickling Filter

Distribution and activity of ammonia oxidizing bacteria in a large full-scale trickling filter

2002 ◽  
Vol 36 (6) ◽  
pp. 1439-1448 ◽  
Author(s):  
Frank Persson ◽  
Torsten Wik ◽  
Fred Sörensson ◽  
Malte Hermansson
Keyword(s):  
Full Scale ◽  
Ammonia Oxidizing Bacteria ◽  
Trickling Filter

Bilingualism and Aging

2010 ◽  
Vol 17 (3) ◽  
pp. 74-81 ◽  
Author(s):  
Alfredo Ardila ◽  
Eliane Ramos
Keyword(s):  
Protective Effect ◽  
Cognitive Processes ◽  
Executive Control ◽  
Social Relationship ◽  
Research Review ◽  
Primary Language ◽  
Attention Tasks ◽  
The Social ◽  
Relationship Systems ◽  
Control Research

Language mediates not only the social relationship systems, but also the control of cognitive processes. Potential differences between bilinguals and monolinguals in age-associated cognitive decline during normal and abnormal aging have been suggested. A research review of the area suggests that normal aging is associated with increased interference between the two languages. Regression to the primary language can be considered as a predictor of dementia. Recent research has reported that bilingualism can have a protective effect during aging. Bilinguals are usually faster in performing different attention tasks, and more efficient in tests of executive control. Research has supported the assumption that using two or more different languages frequently can provide not only some social, but also cognitive, advantages during normal and abnormal aging.

Effect of environmental and operating conditions on a full-scale trickling filter for well water treatment

2012 ◽  
Vol 39 ◽  
pp. 228-234
Author(s):  
Athanasia G. Tekerlekopoulou ◽  
Panagiotis G. Papazafiris ◽  
Dimitris V. Vayenas
Keyword(s):  
Water Treatment ◽  
Full Scale ◽  
Operating Conditions ◽  
Well Water ◽  
Trickling Filter
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