Maximization of treatment capacity of a full-scale biological nitrogen removal plant through model simulation and full-scale stress test

2005 ◽  
Author(s):  
Yip Hang Lau
Keyword(s):  
Nitrogen Removal ◽  
Model Simulation ◽  
Stress Test ◽  
Full Scale ◽  
Biological Nitrogen Removal ◽  
Biological Nitrogen

Upgrading for Biological Nitrogen Removal – Some Full-Scale Experiences from Sweden

1990 ◽  
Vol 22 (7-8) ◽  
pp. 93-104 ◽  
Author(s):  
Bengt Andersson ◽  
Björn Rosén
Keyword(s):  
Nitrogen Removal ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Development Program ◽  
Organic Content ◽  
Full Scale ◽  
Municipal Sewage ◽  
Biological Nitrogen Removal ◽  
Sewage Treatment Plants ◽  
Biological Nitrogen

Nitrogen removal is now required by the Swedish parliament. The new requirements will be valid before 1995 and in some cases before 1992. A comprehensive development program, mostly in full scale at about 35 municipal sewage treatment plants, has been started to meet the new demands. In order to co-ordinate all activities, a National Nitrogen Project with representatives from authorities and municipalities has been formed. The general ambition is to meet the demand by process development, using existing volumes rather than to invest in civil works. A Swedish concept has appeared, which in most cases has served as a guideline for the development program. The basic principles are to decrease the load on the biological process by pre-precipitation, to utilize the remaining organic content in the wastewater in a pre-denitrification system, to increase the active biomass in the biological system and to use a two-sludge system with post-denitrification. In this paper, some experiences from the activities in Sweden are discussed and exemplified with results mainly from Falkenberg, Malmö and Norrköping. The treatment plant in Falkenberg was the first to introduce biological nitrogen removal in Sweden. A pre-denitrification system has been in operation since May 1983 with good results. Comprehensive full-scale and pilot tests are in operation at the Sjölunda and Klagshamn sewage treatment plants in Malmö. Special interests have been paid to studies on different applications of fixed film technology. The plant in Norrköping is operated with pre-precipitation followed by combined pre- and post-denitrification.

scholarly journals Effect of COD:N ratio on biological nitrogen removal using full-scale step-feed in municipal wastewater treatment plants

2020 ◽  
Vol 30 (1) ◽  
Author(s):  
Supaporn Phanwilai ◽  
Pongsak Noophan ◽  
Chi-Wang Li ◽  
Kwang-Ho Choo
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Full Scale ◽  
Biological Nitrogen Removal ◽  
Municipal Wastewater Treatment ◽  
Municipal Wastewater Treatment Plants ◽  
Scale Step ◽  
Biological Nitrogen

Abstract This study investigated the effect of low and high chemical oxygen demand (COD):N ratios on biological nitrogen removal and microbial distributions in full-scale step-feed (SF) municipal wastewater treatment plants (WWTPs) in Thailand (SF1) and Taiwan (SF2). The SF1 WWTP had a low COD:N (4:1) ratio, a long solids retention time (SRT) (> 60 d), and low dissolved oxygen (DO) conditions (0.2 mg L− 1 in anoxic tank and 0.9 mg L− 1 in aerobic tank). The total nitrogen (TN) removal efficiency was 48%. The SF2 WWTP had a high COD:N (10:1) ratio, a short SRT (7 d), and high DO (0.6 mg L− 1 in anoxic tank and 1.8 mg L− 1 in aerobic tank). The TN removal efficiency was 61%. The nitrification and denitrification rates from these two plants were inadequate. Using a quantitative polymerase chain reaction (qPCR) technique, the populations of ammonium oxidizing bacteria (AOB) and ammonium oxidizing archaea were quantified. Measurement of ammonia monooxygenase (amoA) gene abundances identified these AOB: Nitrosomonas sp., Nitrosospira sp., Nitrosoccus sp. and Zoogloea sp. Higher amounts of the archaeal-amoA gene were found with long SRT, lower DO and COD:N ratios. Abundance of Nitrobacter sp. was slightly higher than Nitrospira sp. at the SF1, while abundance of Nitrobacter sp. was two orders of magnitude greater than Nitrospira sp. at the SF2. More denitrifying bacteria were of the nirS-type than the nirK-type, especially at higher COD:N ratio. Most bacteria belong to the phyla Acidobacteria, Actinobacteria Bacteroidetes, Chloroflexi, Proteobacteria. The results from this work showed that insufficient carbon sources at the SF1 and high DO concentration in anoxic tank of SF2 adversely affected nitrogen removal efficiencies. In further research work, advanced techniques on the next generation sequencing with different variable regions should be recommended in full-scale WWTPs.

Using modeling to optimize a full-scale WWTP for energy reduction and increased biological nitrogen removal

2009 ◽  
Vol 2009 (4) ◽  
pp. 1282-1285 ◽  
Author(s):  
Lluís Corominas ◽  
Joan Subiranas ◽  
Joaquim Comas ◽  
Peter A. Vanrolleghem ◽  
Leiv Rieger ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Full Scale ◽  
Energy Reduction ◽  
Biological Nitrogen Removal ◽  
Biological Nitrogen

Identification of primary effecters of N2O emissions from full-scale biological nitrogen removal systems using random forest approach

2020 ◽  
Vol 184 ◽  
pp. 116144
Author(s):  
Min Joon Song ◽  
Sangki Choi ◽  
Wo Bin Bae ◽  
Jaejin Lee ◽  
Heejoo Han ◽  
...  
Keyword(s):  
Random Forest ◽  
Nitrogen Removal ◽  
Full Scale ◽  
Biological Nitrogen Removal ◽  
N2o Emissions ◽  
Biological Nitrogen
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