scholarly journals Research of landfill leachate treatment based on anammox

2021 ◽  
Vol 233 ◽  
pp. 02006
Author(s):  
Denghua Wu
Keyword(s):  
Landfill Leachate ◽  
Environmental Protection Agency ◽  
Biological Treatment ◽  
Ammonia Oxidation ◽  
Ammonia Nitrogen ◽  
Research Progress ◽  
Ammonium Oxidation ◽  
Leachate Treatment ◽  
Oxidation Treatment ◽  
Anaerobic Ammonia Oxidation

Landfill leachate has the characteristics of high ammonia nitrogen content, high concentration of organic matter and low carbon nitrogen ratio. Traditional biological treatment technology is difficult to meet the increasingly stringent emission standards. Ammonia nitrogen is the main pollutant in landfill leachate. The ammonia-nitrogen-rich leachate not only poses a threat to the surrounding environment, but also has adverse effects on the subsequent biological treatment of leachate. Anaerobic ammonium oxidation (Anammox) is a new biological denitrification technology, which has the advantages of high denitrification capacity and low energy consumption, and is suitable for the treatment of landfill leachate. This article from the process type, inhibiting factors and microbiology at home and abroad are reviewed in three aspects: the anaerobic ammonia oxidation treatment, the research progress of landfill leachate by analyzing the national environmental protection agency of leachate quality related data in the database, and combining previous research results, reveals the infiltration drain liquid ammonia nitrogen in the different conditions of concentration variation characteristics, for anaerobic ammonia oxidation treatment of landfill leachate to provide the reference for engineering applications.

Reason Analysis of ANAMMOX Occurred in a Landfill Leachate Treatment System

2014 ◽  
Vol 955-959 ◽  
pp. 2322-2325
Author(s):  
Li Hua Liang ◽  
Su Lin Kuang ◽  
Ting Wang ◽  
Yuan Jing Ji ◽  
Sai Zhang
Keyword(s):  
Organic Matter ◽  
Landfill Leachate ◽  
Ammonia Oxidation ◽  
Ph Value ◽  
Ammonia Nitrogen ◽  
Anammox Bacteria ◽  
Leachate Treatment ◽  
Anaerobic Ammonia Oxidation ◽  
High Concentrations ◽  
Biological Treatment Process

The biological treatment process of landfill leachate in Beijing Liulitun landfill is a multistage A/O technology, in which a large amount of ANAMMOX (Anaerobic ammonia oxidation, ANAMMOX) bacteria were found in the sludge. There are several factors impacting the activity of ANAMMOX bacteria, including pH value, temperature and HRT which in this process are suitable for the survival of ANAMMOX bacteria. Especially, low dissolved oxygen is an essential factor as the provider of electron donor for nitrite formation. Although the high concentrations of organic matter, ammonia nitrogen and nitrite will inhibit the occurrence of ANAMMOX, ANAMMOX bacteria can self-detoxification by forming a low-poison habitat by consuming ammonia and nitrite as well as organic matter by heterotrophic ANAMMOX bacteria.

Research Progress on the Anammox Technology

2011 ◽  
Vol 347-353 ◽  
pp. 2015-2020 ◽  
Author(s):  
Feng Xun Tan ◽  
Min Huang ◽  
Dao Ji Wu ◽  
Zhao Liang Zhu
Keyword(s):  
Nitrogen Removal ◽  
Ammonia Oxidation ◽  
Carbon Sources ◽  
Research Progress ◽  
Biological Nitrogen Removal ◽  
Anammox Bacteria ◽  
Ammonium Oxidation ◽  
Physiological And Biochemical Characteristics ◽  
Anaerobic Ammonia Oxidation ◽  
Biological Nitrogen

With the continuing phenomenon of eutrophication, the pollution of nitrogen has caused wide concern. Lack of organic carbon sources is always considered to be a key problem for nitrogen removal efficiency and cost when conventional biological nitrogen removal process was used to the treatment of ammonium-rich wastewater, but the anaerobic ammonium oxidation（ANAMMOX）can solve this problem .Anammox has so many advantages that it has good prospects in the biological nitrogen removal in wastewater. Anammox bacteria grows slowly, has a long generation time, and is susceptible to the environmental conditions. DO, Temperature, pH and organic can impact the process of anammox, so it is necessary to take careful methods to cultivate Anammox biomass. Depending on the purpose of improve water quality, appropriate treatment reactors and seed sludge should be selected to start ANAMMON process. The discovery of anaerobic ammonia oxidation, the reaction mechanism, influence application, the enrichment of anammox bacteria, physiological and biochemical characteristics of anammox bacteria, the start of anaerobic ammonia oxidation are reviewed in this paper.

Research on Nitrogen Removal Performance of Leachate Treatment of WSIP Reactor

2011 ◽  
Vol 55-57 ◽  
pp. 789-795
Author(s):  
Xiu Ju Duan ◽  
Qiang He ◽  
Ya Li Liu
Keyword(s):  
Nitrogen Removal ◽  
Biological Treatment ◽  
Orthogonal Experiment ◽  
Ammonia Nitrogen ◽  
Ammonia Removal ◽  
Leachate Treatment ◽  
Treatment Performance ◽  
Biomass Retention ◽  
Nitrification And Denitrification

This thesis put forward the treatment concept of “without Biomass Retention Sequential Batch Intensified Pretreatment (WSIP)” in leachate treatment, for sake of improving performance of nitrogen removal, optimizing excess water’s nutritional ratio and benefitting the follow-up aerobic biological treatment. Based on orthogonal experiment of WSIP Reactor’s leachate treatment performance, Conclusions can be drew: the removal performance of ammonia nitrogen and TN is higher of WSIP, in which short-cut nitrification and denitrification can be realized; HRT, DO and sequential period are remarkable factors of ammonia removal performance, TN removal performance and realization of short-cut nitrification and denitrification; In normal temperature, the most perfect functional parameter of WSIP Reactor is: HRT=4d, DO=0.75mg/L and sequential period is 6h.

scholarly journals Electricity generation and pollutants removal of landfill leachate by osmotic microbial fuel cells with different forward osmosis membranes

2021 ◽  
Author(s):  
Nan Jiang ◽  
Li Huang ◽  
Manhong Huang ◽  
Teng Cai ◽  
Jialing Song ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Active Layer ◽  
Landfill Leachate ◽  
Microbial Fuel Cells ◽  
Forward Osmosis ◽  
Feed Solution ◽  
Cellulose Triacetate ◽  
Ammonia Nitrogen ◽  
Pollutant Removal ◽  
Leachate Treatment

Abstract In this study, thin-film composite with embedded polyester screen, cellulose triacetate with a cast nonwoven and cellulose triacetate with embedded polyester screen (CTA-ES) were examined as the intermediate membranes in osmotic microbial fuel cells (OsMFCs). The reactors were fed with actual landfill leachate and the performance was studied in two operation modes: active layer facing draw solution and active layer facing feed solution (AL-FS). The OsMFC with CTA-ES exhibited the best energy generation (maximum power density: 0.44 W m-2) and pollutant removal efficiency (ammonia nitrogen: 70.12 ± 0.28%, total nitrogen: 74.04 ± 0.33%) in the AL-FS mode, which could be ascribed to the lowest internal resistance (236.75 ohm) and highest microbial richness. Pseudomonas was the highest proportion of microbial in OsMFCs. The results of this study has demonstrated the potential of OsMFCs for landfill leachate treatment.

scholarly journals The comparison of efficiency of Fenton and photo-Fenton treatment of stabilised landfill leachate / Porównanie efektywności oczyszczania odcieków z ustabilizowanego składowiska odpadów komunalnych w procesie Fentona i foto-Fentona

2015 ◽  
Vol 26 (3) ◽  
pp. 49-53 ◽  
Author(s):  
Anna Kwarciak-Kozłowska ◽  
Aleksandra Krzywicka
Keyword(s):  
Landfill Leachate ◽  
Fenton Reaction ◽  
Ferrous Sulphate ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Ammonia Removal ◽  
Mass Ratio ◽  
Leachate Treatment ◽  
Initial Ph ◽  
Removal Efficiencies

Abstract The goal of this article was to compare the efficiency of Fenton and photo-Fenton reaction used for stabilised landfill leachate treatment. The mass ratio of COD:H2O2 was fixed to 1:2 for every stages. The dose of reagents (ferrous sulphate/hydrogen peroxide) was different and ranged from 0.1 to 0.5. To determine the efficiency of treatment, the BOD (biochemical oxygen demand COD (chemical oxygen demand), TOC (total organic carbon) , ammonia nitrogen and BOD/COD ratio was measured. The experiment was carried out under the following conditions: temperature was 25ºC, the initial pH was adjusted to 3.0. Every processes were lasting 60 minutes. The most appropriate dose of reagents was 0.25 (Fe2+/H2O2). It was found that the application of UV contributed to increase of COD, TOC and ammonia removal efficiencies by an average of 14%.

Pilot study for the potential application of a shortcut nitrification and denitrification process in landfill leachate treatment with MBR

2006 ◽  
Vol 6 (6) ◽  
pp. 147-154 ◽  
Author(s):  
K.J. An ◽  
J.W. Tan ◽  
L. Meng
Keyword(s):  
Pilot Study ◽  
Landfill Leachate ◽  
Ammonia Oxidation ◽  
Carbon Sources ◽  
Treatment Plant ◽  
Optimum Operating ◽  
Leachate Treatment ◽  
Optimum Operating Condition ◽  
Nitrification And Denitrification ◽  
Denitrification Process

An advanced nitrogen removal pilot study was performed in China's Xia Ping Landfill Leachate Treatment Plant to undertake shortcut nitrification and denitrification with the Membrane Bio-reactor (MBR) process. It was found that the MBR process used 25% less of the oxygen and 40% less of the external carbon sources, compared to the conventional nitrification and denitrification process. The key feature of the MBR process is that it provides an environment more favorable for ammonia oxidation bacterium (AOB) than for nitrite oxidation bacterium (NOB) through controlling loading, pH, temperature, dissolved oxygen concentration (DO), and NH3 inhibition. Optimum operating condition was examined through continuous running of the pilot MBR, and it was found that a minimum HRT of 4.3 days and maximum ammonia loading of 0.6 kg N- NH4+ m3.d with pH 7–8.5, temperature 25–30 °C, and DO at 2 mg/L is favorable to AOB. Kinetic study was conducted to identify the characteristic of the microorganisms in the system. Measured Ks and μA,max of MBR sludge was 19.65 mg NH4-N/L (Temperature 25 °C, pH 8.5) and 0.26 d−1, respectively.

The Experimental Study on Landfill Leachate Treatment by Coagulation-Sedimentation + Electro-Oxidation Joint Reactor

2013 ◽  
Vol 295-298 ◽  
pp. 1472-1477
Author(s):  
Tao Yu ◽  
Tao Huang ◽  
Yin Xi Pan ◽  
Lin Hai Yang
Keyword(s):  
Landfill Leachate ◽  
Elimination Rate ◽  
Ammonia Nitrogen ◽  
Effluent Water ◽  
Treatment Technology ◽  
Leachate Treatment ◽  
Electro Oxidation ◽  
Electro Coagulation ◽  
Oxidation Reactor ◽  
Nitrogen Elimination

The technology used the coagulation-sedimentation + electro-oxidation joint reactor has been studied to treat landfill leachate. First adding FeCl30.4g/L into all leachate for coagulation and sedimentation, its CODcr elimination rate can achieve 35%, but does have no effect on ammonia nitrogen. Then using electro-oxidation reactor to deal with effluent water, the reaction order of electro-oxidation reactor is first-level, as the reaction conditions are 20mA/cm2 of electric current density, 140min of reaction time, the leachate CODcr elimination rate can reach to above 90%, the ammonia nitrogen elimination rate meets to 98% around. Using coagulation-sedimentation + electro coagulation joint reactor to treat landfill leachate can get stable effluent water quality with good treatment effect, has very high elimination efficiency of CODcr and ammonia nitrogen. It is a suitable treatment technology for landfill leachate.

scholarly journals Degradation of Matured Landfill Leachate by Electro Fenton Treatment and Optimization by Response Surface Methodology

2018 ◽  
Vol 7 (3.8) ◽  
pp. 101
Author(s):  
Minimol Pieus T ◽  
Soloman P.A
Keyword(s):  
Landfill Leachate ◽  
Biological Treatment ◽  
Solid Waste Management ◽  
Electrochemical Treatment ◽  
Ammonia Nitrogen ◽  
Fenton Process ◽  
The Earth ◽  
Novel Approach ◽  
The World ◽  
Optimum Working

The landfill is the most widely utilized approach for solid waste management over the world. The fluid side-effect of the procedure, leachate, is a genuine danger to the earth. The ordinary biological treatment of matured landfill leachate is restricted by the presence of toxic contaminants and recalcitrant organics. A novel approach for management of landfill leachate by Electro Fenton process is researched here for the technical feasibility. The experimental outcome demonstrated that there was extensive reduction in COD-78.2%, Ammonia nitrogen-42.0%, Chloride-63.5%, Sulfate-60.0%, Sulfide-57.3%, and Phosphate-62.4% at the optimum working state of pH-2.85, Current density-140.5 A/m2, H2O2 dosage- 53% of theoretical value, Reaction time-44min. The biodegradability index was enhanced from 0.21 to 0.43 because of the treatment. The examination not just uncovers the likelihood of degradation of contaminants by giving a mild electrochemical treatment additionally extends the possibility of utilizing the approach as a compelling pretreatment for its biological treatment.  

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