Effect of ammonium nitrogen concentration on the ammonia-oxidizing bacteria community in a membrane bioreactor for the treatment of anaerobically digested swine wastewater

2014 ◽  
Vol 118 (3) ◽  
pp. 277-283 ◽  
Author(s):  
Qianwen Sui ◽  
Chong Liu ◽  
Hongmin Dong ◽  
Zhiping Zhu
Keyword(s):  
Membrane Bioreactor ◽  
Nitrogen Concentration ◽  
Ammonium Nitrogen ◽  
Swine Wastewater ◽  
Ammonia Oxidizing Bacteria

scholarly journals Development of a Short-Cut Combined Magnetic Coagulation–Sequence Batch Membrane Bioreactor for Swine Wastewater Treatment

Membranes ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 83
Author(s):  
Yanlin Chen ◽  
Qianwen Sui ◽  
Dawei Yu ◽  
Libing Zheng ◽  
Meixue Chen ◽  
...  
Keyword(s):  
Membrane Bioreactor ◽  
High Throughput Sequencing ◽  
Oxygen Demand ◽  
Ammonium Nitrogen ◽  
Aluminium Chloride ◽  
Swine Wastewater ◽  
Ammonia Oxidizing Bacteria ◽  
Sequencing Analysis ◽  
High Concentration ◽  
Pre Treatment

A high concentration of suspended solids (SS) in swine wastewater reduces the efficiency of the biological treatment process. The current study developed a short-cut combined magnetic coagulation (MC)–sequence batch membrane bioreactor (SMBR) process to treat swine wastewater. Compared with the single SMBR process, the combined process successfully achieved similarly high removal efficiencies of chemical oxygen demand (COD), total nitrogen (TN), ammonium nitrogen (NH4+-N), and total phosphorous (TP) of 96.0%, 97.6%, 99.0%, and 69.1%, respectively, at dosages of 0.5 g/L of poly aluminium chloride (PAC), 2 mg/L of polyacrylamide (PAM), and 1 g/L of magnetic seeds in Stage II, and concentrations of TN, COD, and NH4+-N in effluent can meet the discharge standards for pollutants for livestock and poultry breeding (GB18596-2001, China). The nitrogen removal loading (NRL) was increased from 0.21 to 0.28 kg/(m3·d), and the hydraulic retention time (HRT) was shortened from 5.0 days to 4.3 days. High-throughput sequencing analysis was carried out to investigate microbial community evolution, and the results showed that the relative abundance of ammonia-oxidizing bacteria (AOB) in the SMBR increased from 0.1% without pre-treatment to 1.78% with the pre-treatment of MC.

scholarly journals The Roles of Porous Coral Sands in Initial Enrichment of Ammonia-Oxidizing Bacteria

2007 ◽  
Vol 7 ◽  
pp. 525-532
Author(s):  
Qing Guo ◽  
Zao-he Wu ◽  
Ming-liang Qian ◽  
Binhe Gu
Keyword(s):  
Culture Media ◽  
Potassium Dihydrogen Phosphate ◽  
N:P Ratio ◽  
Ammonium Nitrogen ◽  
Dihydrogen Phosphate ◽  
Ammonia Oxidizing Bacteria ◽  
Potassium Dihydrogen ◽  
Conversion Rates ◽  
Calcium Source ◽  
The Media

The purpose of this study was to investigate the roles of coral sands in the enrichment and isolation of ammonium-oxidizing bacteria (AOB). We hypothesized that the porous coral sands provided additional surface area and nutrients for the growth of periphytic AOB. In the present study, an orthogonal test was designed to compare the AOB conversion rates of ammonium-nitrogen (NH4+N) to nitrite-nitrogen (NO2--N) among various combinations of culture media. Results showed that the conversion of NH4+N to NO2--N increased significantly when the coral sands were added, implying that coral sands were beneficial to the growth of AOB. Additions of potassium dihydrogen phosphate (KH2PO4) or sodium bicarbonate (NaHCO3) to the media became unnecessary when coral sands were used, but the addition of KH2PO4was needed when the molar nitrogen to phosphorus (N:P) ratio reached 10 in the enrichment media using calcium carbonate (CaCO3) powder as a calcium source.

Nitrogen cycling in a Venezuelan tropical seasonally flooded forest: soil nitrogen mineralization and nitrification

1994 ◽  
Vol 10 (3) ◽  
pp. 399-416 ◽  
Author(s):  
Barrios E. ◽  
Herrera R.
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Availability ◽  
Inorganic Nitrogen ◽  
Nitrogen Concentration ◽  
Ammonium Nitrogen ◽  
Wet Season ◽  
Flooded Forest ◽  
Nitrogen Concentrations ◽  
Minimum Stress ◽  
Seasonally Flooded

ABSTRACTSeasonally flooded forests represent a transition between terrestrial and aquatic ecosystems. The Mapire river, a tributary of the Orinoco river, floods its surrounding forests during the wet season (May–December). The soils are very acid and the total nitrogen concentration (0.1%) is only half that found in nearby soils flooded by Orinoco waters. Ammonium-nitrogen predominates in the soil during the flooded period while nitrate-nitrogen concentrations are higher in the dry period. Wide fluctuations in the inorganic nitrogen fractions did not considerably affect the annual course of soil nitrogen.The predominance of mineralization versus nitrification (56 and 5 μgsoil month−1respectively) and possibly the synchronization of nitrogen availability with plant demand could be considered as nitrogen conserving mechanisms.In synchrony with the hydrologic cycle, the seasonally flooded forest studied shows a nitrogencycle where inputs and accumulation are maximized when the system is under minimum stress (dry season). During flooding, the system enters a period of dormancy making minimal use of nutrient and energy to avoid or tolerate anaerobiosis.

scholarly journals Influence of Organic Ammonium Derivatives on the Equilibria Between of NH4+, NO2- and NO3- Ions in River Waters

2021 ◽  
Author(s):  
Petru Spataru
Keyword(s):  
River Water ◽  
Nitrogen Concentration ◽  
Inhibitory Effect ◽  
Ammonium Nitrogen ◽  
Ammonium Ion ◽  
Organic Radical ◽  
Stress Effect ◽  
River Waters ◽  
Carbon Radicals ◽  
Organic Amines

Abstract The braking effect of the ammonium derivatives on the natural aquatic environment varies dramatically with the number and nature of organic radical substitutions at nitrogen atom, particularly with their structure, composition and genesis. The most common discrepancy in their toxic effect are showing the natural and synthetic amines. For instance, the values of the maximum allowable concentration (MAC) of the derivatives of the natural origin for drinking water exceed the MAC of the synthetic ones by two orders. On the other hand, it has been found out that 1- naphtylamine (1-NA) inhibitory effect is associated to its toxicity. The Diethylamine (DEA) braking impact on the nitrification process is effectively lower than that of the toxicity. Our experiments show that the carbon-radicals of organic amines act as reducing agents. It is found that DEA decomposition leads to a high NH4+ ions (approx. 3.8 mg/L ammonium nitrogen) concentration in river water samples. By laboratory simulations two types of fixations by microbial organisms have been established: 1) absorption-desorption, the hydromicrobiotic reaction to ammonium (HMBRA) at the instantaneous increase of the concentration of ammonium ion in the river water (so-called shock/stress effect); 2) nitrogen fixation stimulated by a certain concentration (0.05mg/L) of a 1-NA and other amines.

Indole degrading of ammonia oxidizing bacteria isolated from swine wastewater treatment system

2009 ◽  
Vol 59 (12) ◽  
pp. 2405-2410 ◽  
Author(s):  
Ping Li ◽  
Lei Tong ◽  
Kun Liu ◽  
Yanhong Wang ◽  
Yanxin Wang
Keyword(s):  
Wastewater Treatment ◽  
Biochemical Analysis ◽  
Ammonia Oxidation ◽  
Treatment System ◽  
Swine Wastewater ◽  
Ammonia Oxidizing Bacteria ◽  
16S Rdna Gene ◽  
Wastewater Treatment System ◽  
Nitrate And Nitrite ◽  
Physiological And Biochemical

Three new strains named LPA11, LPB11 and LPC24 were isolated to investigate the patterns of indole degradation and ammonia oxidation in swine wastewater from different parts of a swine wastewater treatment system by the direct spreading plate method. These three isolates were all identified as Pseudomonas putida based on 16S-rDNA gene sequences, main physiological and biochemical analysis. They were capable of decomposing 1.0 mM indole completely in 10, 16 and 18 days respectively. According to the results of HPLC and GC/MS, the possible pathway for the degradation was via oxindole, isatin and anthranilic acid. The three bacteria were capable of oxidizing ammonia, and the strains LPA11 and LPC24 were capable of effectively reducing nitrate and nitrite.

Optimizing volatile fatty acid production in partial acidogenesis of swine wastewater

2004 ◽  
Vol 50 (8) ◽  
pp. 169-176 ◽  
Author(s):  
K. Yang ◽  
C. Oh ◽  
S. Hwang
Keyword(s):  
Propionic Acid ◽  
Acid Production ◽  
Volatile Fatty Acids ◽  
Nitrogen Concentration ◽  
Ammonia Nitrogen ◽  
Swine Wastewater ◽  
Fatty Acid Production ◽  
Stirred Tank Reactors ◽  
Physiological Conditions ◽  
Propionic Acid Production

This research has been conducted based on the fact that acetic and butyric acids are favorable substrates for methanogens, and that a low level of propionic acid production during acidogenesis minimizes the inhibition effect on methanogenic growth. Raw swine wastewater was pretreated with ammonia stripping to enhance acidogenesis. The ammonia nitrogen concentration of less than 1.2 g/L did not significantly affect the biochemical acidogenic potential of swine wastewater. For acidogenesis of swine wastewater, a et of experiments were carried out to produce short chain volatile fatty acids (VFA) in laboratory-scale continuously stirred tank reactors. The production of acetic, propionic, and butyric acids associated with simultaneous changes in hydraulic retention time (HRT) and temperature was investigated. Response surface methodology was successfully applied to approximate the responses of the VFA productions. The optimum physiological conditions where the maximum acetic and butyric acids production occurred were 2.4 days HRT at 34°C and 2.1 days HRT at 35°C, respectively. The propionic acid production linearly increased as both HRT and temperature increased.

The impact of influent total ammonium nitrogen concentration on nitrite-oxidizing bacteria inhibition in moving bed biofilm reactor

2013 ◽  
Vol 69 (6) ◽  
pp. 1227-1233 ◽  
Author(s):  
Vojtech Kouba ◽  
Michael Catrysse ◽  
Hana Stryjova ◽  
Ivana Jonatova ◽  
Eveline I. P. Volcke ◽  
...  
Keyword(s):  
Municipal Wastewater ◽  
Nitrogen Concentration ◽  
Ammonium Nitrogen ◽  
Biofilm Reactor ◽  
Nitrite Accumulation ◽  
Municipal Wastewater Treatment ◽  
Moving Bed ◽  
Nitrite Oxidizing Bacteria ◽  
Total Ammonium ◽  
The Impact

The application of nitrification–denitrification over nitrite (nitritation–denitritation) with municipal (i.e. diluted and cold (or low-temperature)) wastewater can substantially improve the energy balance of municipal wastewater treatment plants. For the accumulation of nitrite, it is crucial to inhibit nitrite-oxidizing bacteria (NOB) with simultaneous proliferation of ammonium-oxidizing bacteria (AOB). The present study describes the effect of the influent total ammonium nitrogen (TAN) concentration on AOB and NOB activity in two moving bed biofilm reactors operated as sequencing batch reactors (SBR) at 15 °C (SBR I) and 21 °C (SBR II). The reactors were fed with diluted reject water containing 600, 300, 150 and 75 mg TAN L−1. The only factor limiting NOB activity in these reactors was the high concentrations of free ammonia and/or free nitrous acid (FNA) during the SBR cycles. Nitrite accumulation was observed with influents containing 600, 300 and 150 mg TAN L−1 in SBR I and 600 and 300 in SBR II. Once nitrate production established in the reactors, the increase of influent TAN concentration up to the original 600 mg TAN L−1 did not limit NOB activity. This was due to the massive development of NOB clusters throughout the biofilm that were able to cope with faster formation of FNA. The results of the fluorescence in situ hybridization analysis preliminarily showed the stratification of bacteria in the biofilm.

Ammonium nitrogen removal from anaerobically digested effluent of swine wastewater using local sand

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
D. Zheng ◽  
L.W. Deng ◽  
N.N. Liu ◽  
H. Yang ◽  
Y. Liu
Keyword(s):  
Particle Size ◽  
Adsorption Capacity ◽  
Nitrogen Removal ◽  
Contact Time ◽  
Ammonium Nitrogen ◽  
Langmuir Equation ◽  
Swine Wastewater ◽  
Ammonium Concentration ◽  
High Adsorption ◽  
Removal Capacity

A type of sand selected in Sichuan, China was identified with high adsorption capacity to ammonium nitrogen. The effects of contact time, initial ammonium concentration and particle size on the sand for removing ammonium from digested effluent of swine wastewater were investigated using a static shaker experiment. Results showed that the optimum contact time for sand to adsorb ammonium was 150 min. As initial ammonium concentration increased, the removal capacity of the sand increased, but the removal efficiency decreased. The adsorbed ammonium increased as the particle size decreased. At ammonium concentrations ranging from 27 0 to 553 mg L-1, the maximum ammonium adsorption capacity of the sand was approximately 0 77 mg g-1 according to the Langmuir equation. Based on these findings, the use of this local sand as an adsorption media for ammonium nitrogen removal from digested effluent of swine wastewater is feasible.

Sign in / Sign up

Export Citation Format

Share Document