Heterotrophic denitrification on granular anammox SBR treating urban landfill leachate

2008 ◽  
Vol 58 (9) ◽  
pp. 1749-1755 ◽  
Author(s):  
M. Ruscalleda ◽  
H. López ◽  
R. Ganigué ◽  
S. Puig ◽  
M. D. Balaguer ◽  
...  
Keyword(s):  
Organic Matter ◽  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Anammox Bacteria ◽  
Partial Nitritation ◽  
Nitrogen Consumption ◽  
The Stability ◽  
Anammox Process ◽  
Heterotrophic Denitrification ◽  
Biodegradable Organic Matter

The anammox process was applied to treat urban landfill leachate coming from a previous partial nitritation process. In presence of organic matter, the anammox process could coexist with heterotrophic denitrification. The goal of this study was to asses the stability of the anammox process with simultaneous heterotrophic denitrification treating urban landfill leachate. The results achieved demonstrated that the anammox process was not inactivated by heterotrophic denitrification. Moreover, part of the nitrate produced by anammox bacteria and part of the influent nitrite were removed by heterotrophic denitrifiers with associated biodegradable organic matter consumption. In this sense, the contribution on nitrogen removal of each process was calculated using a nitrogen mass balance methodology. An 85.1±5.6% of the nitrogen consumption was achieved via anammox process while the average heterotrophic denitrifiers contribution was 14.9±5.6%. Heterotrophic denitrification was limited by the available easily biodegradable organic matter.

Treatment of Landfill Leachate by Anammox Process

2020 ◽  
pp. 1169-1191
Author(s):  
Grzegorz Cema ◽  
Adam Sochacki
Keyword(s):  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Inorganic Compounds ◽  
Complex Mixture ◽  
Short Review ◽  
Special Focus ◽  
Ammonia Content ◽  
Partial Nitritation ◽  
Reject Water ◽  
Anammox Process

In most cases, the anammox process is used for nitrogen removal from reject water coming from dewatering of digested sludge. However, there are more industrial streams suitable for treatment by partial nitritation/anammox process. The landfill leachate may be a good example of such wastewater. Generally, landfilling is the most used solution for treatment of urban solid wastes. The problem with landfill leachate production and management is one of the most important issues associated with the sanitary landfills. These streams are highly contaminated wastewater with a complex mixture of organic and inorganic compounds and characterized by a high ammonia content and low biodegradable organic fraction matter. The objective of this chapter is the short characteristic of landfill leachate and a short review of its treatment methods with special focus on nitrogen removal by partial nitritation/anammox process.

Combining partial nitritation and heterotrophic denitritation for the treatment of landfill leachate previous to an anammox reactor

2010 ◽  
Vol 61 (8) ◽  
pp. 1949-1955 ◽  
Author(s):  
R. Ganigué ◽  
J. Gabarró ◽  
H. López ◽  
M. Ruscalleda ◽  
M. D. Balaguer ◽  
...  
Keyword(s):  
Organic Matter ◽  
Total Nitrogen ◽  
Landfill Leachate ◽  
Nitrous Acid ◽  
Process Performance ◽  
Free Nitrous Acid ◽  
Partial Nitritation ◽  
Feed Strategy ◽  
The Stability ◽  
Conventional Systems

Landfill leachate can present extremely elevated concentrations of ammonium (up to 6,000 mg N-NH4+ L−1) and a low biodegradable organic matter fraction. As an alternative to conventional systems, this wastewater can be treated on a more sustainable way by a fully autotrophic partial nitritation–anammox system. The operation of the first step of this system, the partial nitritation, is critical since the elevated concentrations of ammonium and nitrite in the reactor can severely inhibit ammonium oxidizing bacteria (AOB) activity. In this way, the inclusion of anoxic phases during the feeding events to promote the denitrification via nitrite can be a good option for upgrading the process performance and increasing the stability of the system. This paper deals with the evaluation of an anoxic–aerobic step-feed strategy for the operation of a partial nitritation SBR. Results of this study have revealed a decrease on the total nitrogen inside the reactor of more than 200 mg N L−1 without prejudice on the partial nitritation process. Furthermore, this study has also allowed detecting an AOB activity reduction at the end of aerobic phases due to bicarbonate limitation and/or free nitrous acid inhibition.

scholarly journals The SHARON process in the treatment of landfill leachate

2010 ◽  
Vol 61 (1) ◽  
pp. 47-52 ◽  
Author(s):  
A. Vilar ◽  
M. Eiroa ◽  
C. Kennes ◽  
M. C. Veiga
Keyword(s):  
Organic Matter ◽  
Landfill Leachate ◽  
Previous Treatment ◽  
Cod Removal ◽  
Partial Nitrification ◽  
Ammonium Concentration ◽  
Partial Nitritation ◽  
Pre Treatment ◽  
Anammox Process ◽  
Sharon Process

The purpose of this paper was to study the partial nitrification of the nitrogen present in a landfill leachate applying the SHARON process in order to obtain a suitable effluent to the ANAMMOX process. As a first step, the SHARON reactor was fed anaerobically pre-treated leachate at an ammonium concentration of 2,000 mg N/L (1.1 kg N/m3 d). In such conditions, the average ammonium and nitrite concentrations in the effluent were 775 mg N/L and 1,225 mg N/L, respectively. During this period the COD removal was very low since most of the biodegradable organic matter was removed in the anaerobic pre-treatment. Afterwards, the SHARON reactor was fed leachate without a previous treatment and the efficiency of the partial nitritation diminished. As well, the COD removal increased, achieving a percentage around 28%.

Anammox Process

2017 ◽  
pp. 264-289 ◽  
Author(s):  
Ángeles Val del Río ◽  
Alba Pedrouso Fuentes ◽  
Elisa Amanda Giustinianovich ◽  
José Luis Campos Gomez ◽  
Anuska Mosquera-Corral
Keyword(s):  
Nitrogen Removal ◽  
Good Alternative ◽  
Industrial Applications ◽  
Full Scale ◽  
Phosphorus Recovery ◽  
Anammox Bacteria ◽  
Partial Nitritation ◽  
Struvite Precipitation ◽  
Anammox Process ◽  
Denitrification Process

Application of anammox based processes is nowadays an efficient way to remove nitrogen from wastewaters, being good alternative to the conventional nitrification-denitrification process. This chapter reviews the possible configurations to apply the anammox process, being special attention to the previous partial nitritation, necessary to obtain the adequate substrates for anammox bacteria. Furthermore a description of the main technologies developed and patented by different companies was performed, with focus on the advantages and bottlenecks of them. These technologies are classified in the chapter based on the type of biomass: suspended, granular and biofilm. Also a review is presented for the industrial applications (food industry, agricultural wastes, landfill leachates, electronic industry, etc.), taking into account full scale experiences and laboratory results, as well as microbiology aspects respect to the anammox bacteria genera involved. Finally the possibility to couple nitrogen removal, by anammox, with phosphorus recovery, by struvite precipitation, is also evaluated.

Treatment of Landfill Leachate by Anammox Process

2017 ◽  
pp. 290-311 ◽  
Author(s):  
Grzegorz Cema ◽  
Adam Sochacki
Keyword(s):  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Inorganic Compounds ◽  
Complex Mixture ◽  
Short Review ◽  
Special Focus ◽  
Ammonia Content ◽  
Partial Nitritation ◽  
Reject Water ◽  
Anammox Process

In most cases, the anammox process is used for nitrogen removal from reject water coming from dewatering of digested sludge. However, there are more industrial streams suitable for treatment by partial nitritation/anammox process. The landfill leachate may be a good example of such wastewater. Generally, landfilling is the most used solution for treatment of urban solid wastes. The problem with landfill leachate production and management is one of the most important issues associated with the sanitary landfills. These streams are highly contaminated wastewater with a complex mixture of organic and inorganic compounds and characterized by a high ammonia content and low biodegradable organic fraction matter. The objective of this chapter is the short characteristic of landfill leachate and a short review of its treatment methods with special focus on nitrogen removal by partial nitritation/anammox process.

Wastewater nitrogen removal in SBRs, applying a step-feed strategy: from lab-scale to pilot-plant operation

2004 ◽  
Vol 50 (10) ◽  
pp. 89-96 ◽  
Author(s):  
S. Puig ◽  
M.T. Vives ◽  
Ll. Corominas ◽  
M.D. Balaguer ◽  
J. Colprim
Keyword(s):  
Organic Matter ◽  
Nitrogen Removal ◽  
Pilot Plant ◽  
Batch Reactor ◽  
Aerobic Oxidation ◽  
Scaling Up ◽  
Plant Operation ◽  
Feed Strategy ◽  
Real Wastewater ◽  
Biodegradable Organic Matter

One of the problems of nitrogen removal from wastewater when applying sequencing batch reactor (SBR) technology, is the specific use of organic matter for denitrification purposes. Since easily biodegradable organic matter is rapidly consumed under aerobic or anoxic conditions (i.e. aerobic oxidation or anoxic denitrification, respectively), it is an important factor to consider when scaling up SBRs from the laboratory to real plant operation. In this paper, we present the results obtained in relation to scaling up reactors from lab-scale to pilot-plant scale, treating real wastewater from two different locations: the laboratory and in situ, respectively. In order to make using easily biodegradable organic matter more efficient, the filling phases of SBR cycles were adjusted according to a step-feed strategy composed of 6 anoxic-aerobic events. Feeding only occurred during anoxic phases. The results obtained demonstrated that the methodology may be useful in treating real wastewater with high carbon and nitrogen variations, as it always kept effluent levels lower than the official standards require (effluent total COD lower than 125 mg COD/L and effluent Total Nitrogen lower than 15 mg N/L).

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