Research on the enhancement of biological nitrogen removal at low temperatures from ammonium-rich wastewater by the bio-electrocoagulation technology in lab-scale systems, pilot-scale systems and a full-scale industrial wastewater treatment plant

2018 ◽  
Vol 140 ◽  
pp. 77-89 ◽  
Author(s):  
Liang Li ◽  
Guangsheng Qian ◽  
Linlin Ye ◽  
Xiaomin Hu ◽  
Xin Yu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plant ◽  
Low Temperatures ◽  
Industrial Wastewater ◽  
Treatment Plant ◽  
Pilot Scale ◽  
Biological Nitrogen Removal ◽  
Industrial Wastewater Treatment ◽  
Biological Nitrogen

scholarly journals Thermophilic biological nitrogen removal in industrial wastewater treatment

2013 ◽  
Vol 98 (2) ◽  
pp. 945-956 ◽  
Author(s):  
C. M. Lopez-Vazquez ◽  
M. Kubare ◽  
D. P. Saroj ◽  
C. Chikamba ◽  
J. Schwarz ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Industrial Wastewater ◽  
Biological Nitrogen Removal ◽  
Industrial Wastewater Treatment ◽  
Biological Nitrogen

Enhancing biological nitrogen removal in a small wastewater treatment plant by regulating the air supply

2004 ◽  
Vol 48 (11-12) ◽  
pp. 445-452 ◽  
Author(s):  
M. Fiter ◽  
J. Colprim ◽  
M. Poch ◽  
I. Rodríguez-Roda
Keyword(s):  
Wastewater Treatment ◽  
Dissolved Oxygen ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plant ◽  
Low Cost ◽  
Treatment Plant ◽  
Biological Nitrogen Removal ◽  
Air Supply ◽  
Safety Margins ◽  
Biological Nitrogen

Most of the small wastewater treatment plants in Catalonia were not designed to remove nutrients. However, the large safety margins built into their original engineering design has meant that, in many cases, it has been possible to remove part of the nitrogen without being controlled. This paper focuses on the practical experience carried out in one of these facilities, the Bisbal wastewater treatment plant, aimed at enhancing the biological nitrogen removal using simple, low-cost, easy-to-operate measurement and control. The control strategy, which is based on air supply regulation, was previously designed using simulation studies. A dissolved oxygen monitoring system was installed into the facility, while nitrogen concentrations were analysed every day. Optimal dissolved oxygen profiles in the oxidation ditch were identified, while the air supply strategy was modified according to the variations in the influent.

Factors Affecting Biological Nitrogen Removal Efficiency in a Large Wastewater Treatment Plant

1991 ◽  
Vol 24 (7) ◽  
pp. 121-131 ◽  
Author(s):  
Elzbieta Plaza ◽  
Jan Bosander ◽  
Jozef Trela
Keyword(s):  
Wastewater Treatment ◽  
Chemical Oxygen Demand ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Biological Nitrogen Removal ◽  
Careful Study ◽  
Anoxic Zone ◽  
Biological Nitrogen

The pre-denitrification method, with internal carbon source for biological nitrogen removal, has been studied in full-scale experiments at a large wastewater treatment plant (flow 130,000 m3/d). Factors controlling nitrogen removal, such as fraction of anoxic zone and organic material content in wastewater are discussed. A flexible system with fine bubble membrane disc diffusers made it possible to change the ratio between the volumes for nitrification and denitrification. The denitrification process was limited by lack of organic carbon in the wastewater and increasing the fraction of anoxic zone did not improve the efficiency of the system. With the help of on-line analysers for total nitrogen and chemical oxygen demand, the relationship between the denitrification efficiency and the carbon/nitrogen ratio has been given careful study. The average value for chemical oxygen demand after primary sedimentation was only 130 mg/l and the value for the COD/N ratio was found to be 6.3. The denitrification rate was usually in the range of 1.0 and 2.0 mg NO3-N/g MLVSS h.

scholarly journals ASSESMENT OF NITRIFICATION AND DENITRIFICATION RATE IN BIOLOGICAL NITROGEN REMOVAL FROM WASTEWATER

2007 ◽  
Vol 15 (2) ◽  
pp. 77-84 ◽  
Author(s):  
Giedrė Vabolienė ◽  
Algirdas Bronislovas Matuzevičius
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plant ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Denitrification Rate ◽  
Biological Nitrogen Removal ◽  
Nitrification And Denitrification ◽  
Removal Technologies ◽  
Biological Nitrogen

Biological nitrogen removal from wastewater is based on nitrification and denitrification processes in biological treatment plants with activated sludge. Slowed growth of nitrification bacteria is one of basic problems in biological nitrogen removal from wasterwater. Using biological nitrogen removal technologies at changing nitrification and denitrification rate, it is very important to evaluate properly aeration and reduced aeration duration and to estimate nitrification and denitrification rate. To this purpose an investigation was carried out at Utena Wastewater Treatment Plant. Nitrification and denitrification rate was estimated during five experiments in aeration tanks when the duration of aeration and reduced aeration was from 120 to 180 min. Nitrification and denitrification rate at a different aeration regime and impact of aeration regime on biological nitrogen removal was estimated in the work.

Characteristics of nitrogen removal and microbial distribution by application of spent sulfidic caustic in pilot scale wastewater treatment plant

2010 ◽  
Vol 62 (8) ◽  
pp. 1965-1965
Author(s):  
S. Park ◽  
J. Lee ◽  
J. Park ◽  
I. Byun ◽  
T. Park ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Pilot Scale ◽  
Microbial Distribution ◽  
Spent Sulfidic Caustic ◽  
Sulfidic Caustic

Publisher‘s note. We regret that the published version of this article erroneously denoted the first author as corresponding author; in fact the formal corresponding author of this paper is Professor Taeho Lee, whose address is repeated below.

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