Stability of partial nitritation in a sequencing batch reactor fed with high ammonium strength old urban landfill leachate

Biec, Ha Nhu; Van, Truong Thi Thanh; Tuan, Doan Van; Trung, Nguyen Le Hoang; Nghi, Vo Thuy Khanh; Dân, Nguyễn Phước

doi:10.1016/j.ibiod.2017.06.017

Cited by 30 publications

(8 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Intermittent aeration and endpoint pH control techniques are widely used in the anammox based processes to treat mature landfill leachate and have been proven to be effective control methods [18,31,41]. In the PN/A process, the aeration mode was changed from continuous to intermittent, and the corresponding functional microbial gene hzsB increased from 1.5 × 10 7 to 1.1 × 10 8 copies/g, and anammox activity was enhanced significantly [17].…”

Section: Microbiological Analysis Of Stable Nitrogen Removal Performancementioning

confidence: 99%

Nitrogen Removal from Mature Landfill Leachate via Anammox Based Processes: A Review

et al. 2022

View full text Add to dashboard Cite

Mature landfill leachate is a complex and highly polluted effluent with a large amount of ammonia nitrogen, toxic components and low biodegradability. Its COD/N and BOD5/COD ratios are low, which is not suitable for traditional nitrification and denitrification processes. Anaerobic ammonia oxidation (anammox) is an innovative biological denitrification process, relying on anammox bacteria to form stable biofilms or granules. It has been extensively used in nitrogen removal of mature landfill leachate due to its high efficiency, low cost and sludge yield. This paper reviewed recent advances of anammox based processes for mature landfill leachate treatment. The state of the art anammox process for mature landfill leachate is systematically described, mainly including partial nitrification–anammox, partial nitrification–anammox coupled denitrification. At the same time, the microbiological analysis of the process operation was given. Anaerobic ammonium oxidation (anammox) has the merit of saving the carbon source and aeration energy, while its practical application is mainly limited by an unstable influent condition, operational control and seasonal temperature variation. To improve process efficiency, it is suggested to develop some novel denitrification processes coupled with anammox to reduce the inhibition of anammox bacteria by mature landfill leachate, and to find cheap new carbon sources (methane, waste fruits) to improve the biological denitrification efficiency of the anammox system.

show abstract

Section: Microbiological Analysis Of Stable Nitrogen Removal Performancementioning

confidence: 99%

Nitrogen Removal from Mature Landfill Leachate via Anammox Based Processes: A Review

et al. 2022

View full text Add to dashboard Cite

show abstract

“…11 At this stage, the leachate has a high number of biodegradable compounds that are easily removed by these systems, which include dynamic membrane bioreactors, 12 activated sludge processes, 13 aeration lagoon systems and batch sequencing reactors. 14,15 However, the quality of the leachate changes as it ages, significantly decreasing its biodegradability ratio due to the presence of biorefractory and toxic contaminants that are difficult to degrade, 16 which causes a reduction in the effectivity of the biological treatments. Therefore, electrocoagulation (EC) appears as a successful technology that has been able to reduce more complex contaminant species present in this type of water, 17,18 in particular, COD.…”

Section: Introductionmentioning

confidence: 99%

Operational variable effect on the COD removal efficiency using electrocoagulation in landfill leachate treatment

Carrasco

Núñez

Larral

et al. 2023

Environ. Sci.: Water Res. Technol.

View full text Add to dashboard Cite

show abstract

“…There have been various studies completed on the PN process for the treatment of synthetic wastewater [23][24][25], digester liquor [26][27][28][29], black water [30], and underground brine waste [31], etc. In addition, some literature on the PN process for landfill leachate treatment [32][33][34][35][36][37] was available in recent years. It should be stated that these reports on the PN process for landfill leachate treatment were achieved through operation at high reaction temperatures of up to 30-36ºC, or short sludge retention time (SRT) below 12 days.…”

Section: Introductionmentioning

confidence: 99%

Landfill Leachate Treatment Using a Combination of Heterotrophic Denitrification and Partial Nitritation in a Single Sequencing Batch Reactor

Xu¹,

Zhou²,

Li³

2019

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

The combination of heterotrophic denitrification and partial nitritation for the treatment of landfill leachate was investigated in a single sequencing batch reactor with the objective of achieving simultaneous elimination of nitrogen and organic matter and providing a suitable effluent for the subsequent anaerobic ammonium oxidation (Anammox) treatment. Partial nitritation was established by finely adjusting the airflow rate (AFR) and the influent loading rate (ILR) to an oxygen-limiting condition. The long-term operation of the batch reactor showed that more than 55% removal of the chemical oxygen demand (COD) and 60% elimination of total nitrogen (TN) were obtained. Cycle analysis showed that heterotrophic denitrification contributed to approximately 28% reduction of nitrogen and 24% reduction of COD in the bulk liquid. This study showed that the treatment capacity increased with the increasing total air flux (TAF), and that nitrate formation could be inhibited by controlling the ratio of TAF to ILR below 240 (m 3 air m-3 /kg COD). It was also determined that the effluent pH was an indicator of the partial nitritation performance. This study provides important insights into the process control on partial nitritation of landfill leachate with fluctuated influent conditions.

show abstract

Stability of partial nitritation in a sequencing batch reactor fed with high ammonium strength old urban landfill leachate

Cited by 30 publications

References 34 publications

Nitrogen Removal from Mature Landfill Leachate via Anammox Based Processes: A Review

Nitrogen Removal from Mature Landfill Leachate via Anammox Based Processes: A Review

Operational variable effect on the COD removal efficiency using electrocoagulation in landfill leachate treatment

Landfill Leachate Treatment Using a Combination of Heterotrophic Denitrification and Partial Nitritation in a Single Sequencing Batch Reactor

Contact Info

Product

Resources

About