scholarly journals Effect of temperature and NH4+-N influent concentration on the nitrogen removal effect of luffa cylindrical sponge carrier sequencing batch biofilm reactor

2020 ◽  
Vol 218 ◽  
pp. 03033
Author(s):  
Yafeng Li ◽  
Jianbo Wu ◽  
Yuemeng Bai ◽  
Ning Feng
Keyword(s):  
Nitrogen Removal ◽  
Removal Rate ◽  
Domestic Sewage ◽  
Biofilm Reactor ◽  
Effect Of Temperature ◽  
Biological Nitrogen Removal ◽  
Treatment Rate ◽  
Influent Concentration ◽  
Sequencing Batch Biofilm Reactor ◽  
Biological Nitrogen

In order to improve the efficiency of biological nitrogen removal, the experiment used the luffa cylindrical sponge carrier sequencing batch biofilm reactor to treat domestic sewage, and it studied the temperature on the removal effect of TN in the sewage in the reactor and the changes of various types of nitrogen. The results showed that the TN treatment rate of the luffa cylindrical sponge carrier SBBR reached the peak at 30 °C, the removal rate was 82.25%, indicating that the luffa cylindrical sponge carrier SBBR is very suitable for the removal of nitrogen from domestic sewage.

Nitrogen removal from livestock and poultry breeding wastewaters using a novel sequencing batch biofilm reactor

2010 ◽  
Vol 62 (11) ◽  
pp. 2599-2606 ◽  
Author(s):  
Hong Xiao ◽  
Ping Yang ◽  
Hong Peng ◽  
Yanzong Zhang ◽  
Shihuai Deng ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Heterotrophic Bacteria ◽  
Biofilm Reactor ◽  
N Accumulation ◽  
Sequencing Batch Biofilm Reactor ◽  
Poultry Breeding ◽  
Mode 2 ◽  
Do Concentration ◽  
Nitrification And Denitrification ◽  
Biological Nitrogen

A study was conducted regarding the biological nitrogen removal from the livestock and poultry breeding wastewater (LPBWs) using a novel sequencing batch biofilm reactor (SBBR). Nitrogen removal process was studied under three aeration strategies/modes, referred to as MODE 1, 2, and 3. The results showed that MODE 2 (one operation period: instant fill of LPBWs, 3.0 h aeration, 1.5 h non-aeration, 1.5 h aeration, 1.0 h non-aeration and rapid drain of treated LPBWs) performed the best in nitrogen removal. Under MODE 2, the removal efficiencies were as high as 96.1 and 92.1% for NH3-N and TN, respectively. Simultaneous nitrification and denitrification (SND), as well as shortcut nitrification and denitrification are likely to be the two main mechanisms for the nitrogen removal in this study. Nitrifying bateria were not inhibited by heterotrophic bacteria with C/N ratios ranging from 18.1 to 21.4 and DO concentration of 2.0 mg/l. Alternation between aeration and non-aeration played an important role in NO2−-N accumulation.

Partial Nitrification in Microaerobic Tank of “Anoxic-Anaerobic- Microaerobic-Aerobic (A2O2)” Biological Nitrogen Removal Process

2013 ◽  
Vol 295-298 ◽  
pp. 1039-1044 ◽  
Author(s):  
Jian Lei Gao ◽  
Bing Nan Lv ◽  
Yi Xin Yan ◽  
Jian Ping Wu
Keyword(s):  
Nitrogen Removal ◽  
Removal Rate ◽  
Pilot Scale ◽  
Partial Nitrification ◽  
Biological Nitrogen Removal ◽  
Nitrogenous Fertilizer ◽  
Removal Process ◽  
Batch Tests ◽  
N Removal ◽  
Biological Nitrogen

The pilot-scale Anoxic-Anaerobic-Microaerobic-Aerobic (A2O2) biological nitrogen removal process was used to treat the wastewater from nitrogenous fertilizer production with C/N ratio of 1~2. Batch tests were conducted to investigate the patial nitrification using the activated sludge from the microaerobic tank rich in nitrite bacteria as the experimental object. Results showed that 95% removal efficiency of NH3-N could be obtained with the HRT of 30 h. The SVI affected the NH3-N removal rate and the optimal SVI was 106 mL/g. The ORP was well correlated with the logarithm of NH3-N concentration with the linear regression equation of y=-57.233x+3.308. Moreover, the kinetic model for partial nitrification was determined as v=4.762s/(9.86+s).

Multistage wastewater treatment using separated storage driven denitrification and nitrification biofilms

2006 ◽  
Vol 53 (6) ◽  
pp. 51-58 ◽  
Author(s):  
L. J. Hughes ◽  
J. Lancaster ◽  
R. Cord-Ruwisch
Keyword(s):  
Nitrogen Removal ◽  
Filter Design ◽  
Removal Rate ◽  
Biological Nitrogen Removal ◽  
Trickling Filter ◽  
Waste Streams ◽  
N Removal ◽  
Beta Hydroxybutyrate ◽  
Biological Nitrogen ◽  
Further Development

The feasibility of combining a previously reported storage driven denitrification biofilm, where 80% of influent acetate can be converted to poly-beta-hydroxybutyrate (PHB), with a suitable nitrification reactor, either submerged or trickling filter design, to achieve complete biological nitrogen removal was tested. The reactor system showed the potential of complete biological nitrogen removal of waste streams with a C/N ratio as low as 3.93 kg COD/kg N-NH3 at an overall nitrogen removal rate of 1.1 mmole NH3/L/h. While the efficiency and the rates of nitrogen removal were higher than what is observed in traditional or simultaneous nitrification and denitrification (SND) systems, there were two problems that require further development: (a) the incomplete draining of the reactor caused ammonia retention and release in the effluent, limiting the overall N-removal and (b) pH drifts in the nitrification step slowed down the rate of nitrification if not corrected by appropriate pH adjustment or buffering.

The Performance Impact of Hair Dyeing Sewage on Biological Treatment

2014 ◽  
Vol 522-524 ◽  
pp. 672-677
Author(s):  
Jun Yin ◽  
Yan Kai ◽  
Wei Liu ◽  
Ying Hu ◽  
Fan Xin Meng
Keyword(s):  
Total Phosphorus ◽  
Nitrogen Removal ◽  
Heterotrophic Bacteria ◽  
Removal Rate ◽  
Ammonia Nitrogen ◽  
Domestic Sewage ◽  
Nitrogen Efficiency ◽  
Performance Impact ◽  
Biological Methods ◽  
Biological Nitrogen

To domestic sewage, mixed sewage with hair dyeing sewage and low concentrations of hair dyeing sewage as objects, studied by experiments SBR remove its COD, total phosphorus, ammonia, nitrogen efficiency, the results show that the hair dyeing sewage on SBR to remove COD, total phosphorus, ammonia has little effect, the low concentration hair dyeing sewage can be handled through biological methods, its COD, total phosphorus, total nitrogen removal efficiency can reach 79.11%, 92.16%, 74.51%, 55.93%, However, due to the hair dyeing sewage has cyclic organic matter may inhibit the role of heterotrophic bacteria, affecting the biological nitrogen removal, the nitrogen removal rate of hair dyeing sewage decreased 14.70% than domestic sewage.

Phenol biodegradation and simultaneous nitrogen removal using a carbon fiber felt biofilm reactor

2010 ◽  
Vol 62 (5) ◽  
pp. 1052-1059
Author(s):  
Yingwen Chen ◽  
Mingqing Liu ◽  
Fuyuan Xu ◽  
Shemin Zhu ◽  
Shubao Shen
Keyword(s):  
Carbon Fiber ◽  
Nitrogen Removal ◽  
Air Flow ◽  
Biofilm Reactor ◽  
Phenol Concentration ◽  
Biological Nitrogen Removal ◽  
Phenol Biodegradation ◽  
Flow Rates ◽  
Carbon Fiber Felt ◽  
Biological Nitrogen

Phenol biodegradation and its effect on the biological nitrogen removal were studied in a biofilm reactor (15 L) packed with carbon fiber felt carriers. Meanwhile, the effects of the effluent internal recirculation ratios (0, 100% and 200%) and the air flow rates (0.42, 0.83, 1.46, 2.08 and 3.33 L/min) on the performance of system were tested. The system exhibited an excellent capacity for simultaneous phenol biodegradation and biological nitrogen removal without effluent internal recirculation when the influent phenol concentration was as high as 1,000 mg/L (organic loading rate of 9.54 kg COD/(m3 d)) and the ammonia loading rates of 0.20, 0.32 and 0.40 kg NH4+-N/(m3 d) respectively). Nitrification process was inhibited at the influent phenol concentration of 1,200–1,300 mg/L with average ammonia removal efficiency of 26.9%. The nitrifiers activity could be recovered in the perfect performance of system for phenol biodegradation. However, denitrification was not affected by the process of phenol biodegradation. In the air flow rates of 1.46–2.08 L/min, the system manifested stable operation for phenol elimination and nitrogen removal. Dissolved oxygen (DO) distributions in carbon fiber felt biofilm descended gradually from the external to the center of the carrier in all air flow rates.

Sign in / Sign up

Export Citation Format

Share Document