Probing the dynamics of three freshwater Anammox genera at different salinity levels in a partial nitritation and Anammox sequencing batch reactor treating landfill leachate

2021 ◽  
Vol 319 ◽  
pp. 124112 ◽  
Author(s):  
Xiaowu Huang ◽  
Wenkui Mi ◽  
Hiroaki Ito ◽  
Yasunori Kawagoshi
Keyword(s):  
Landfill Leachate ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Partial Nitritation ◽  
Salinity Levels

scholarly journals Partial nitritation treating nitrogen in old landfill leachate

2016 ◽  
Vol 19 (4) ◽  
pp. 39-49
Author(s):  
Nhat The Phan ◽  
Van Thi Thanh Truong ◽  
Son Thanh Le ◽  
Biec Nhu Ha ◽  
Dan Phuoc Nguyen
Keyword(s):  
Landfill Leachate ◽  
Retention Time ◽  
Sequencing Batch Reactor ◽  
Hydraulic Retention Time ◽  
Batch Reactor ◽  
Partial Nitritation ◽  
Time Operation ◽  
Nitrite Oxidizing Bacteria ◽  
Long Time ◽  
H 30

In this study, a lab-scale Partial Nitritation Sequencing Batch Reactor (PNSBR) was implemented for treating high-ammonium old landfill leachate to yield an appropriate NO2—N/ NH4+-N ratio from 1/1 to 1.32/1 mixture as a pretreatment for subsequent Anammox. The objective of this study was to determine the optimal hydraulic retention time (HRT) at different influent ammonia concentrations for 210 days. The experimental results showed that with the influent ammonia concentrations of 500, 1000, 1500 and 2000 mg/L, HRT is 12 h, 21 h, 30 h and 48 h, respectively. The range of free ammonia (FA) concentration from 17 to 44 mg/L completely inhibited nitrite oxidizing bacteria (NOB) for long time operation. The COD removal efficiency was very low (6±2) %.

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

2017 ◽  
Vol 124 ◽  
pp. 56-61 ◽  
Author(s):  
Phan The Nhat ◽  
Ha Nhu Biec ◽  
Truong Thi Thanh Van ◽  
Doan Van Tuan ◽  
Nguyen Le Hoang Trung ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Partial Nitritation

A sequential treatment of intermediate tropical landfill leachate using a sequencing batch reactor (SBR) and coagulation

2018 ◽  
Vol 205 ◽  
pp. 244-252 ◽  
Author(s):  
Zi Jun Yong ◽  
Mohammed J.K. Bashir ◽  
Choon Aun Ng ◽  
Sumathi Sethupathi ◽  
Jun-Wei Lim
Keyword(s):  
Landfill Leachate ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Sequential Treatment

scholarly journals Performance of the anammox sequencing batch reactor treating synthetic and real landfill leachate

2018 ◽  
Vol 44 ◽  
pp. 00179 ◽  
Author(s):  
Mariusz Tomaszewski ◽  
Grzegorz Cema ◽  
Tomasz Twardowski ◽  
Aleksandra Ziembińska-Buczyńska
Keyword(s):  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Nitrogen Loading ◽  
Synthetic Wastewater ◽  
High Nitrogen ◽  
Removal Capacity ◽  
Anammox Activity ◽  
Anammox Process

The anaerobic ammonium oxidation (anammox) process is one of the most energy efficient and environmentally-friendly bioprocess for the treatment of the wastewater with high nitrogen concentration. The aim of this work was to study the influence of the high nitrogen loading rate (NLR) on the nitrogen removal in the laboratory-scale anammox sequencing batch reactor (SBR), during the shift from the synthetic wastewater to landfill leachate. In both cases with the increase of NLR from 0.5 to 1.1 – 1.2 kg N/m3d, the nitrogen removal rate (NRR) increases to about 1 kg N/m3d, but higher NLR caused substrates accumulation and affects anammox process efficiency. Maximum specific anammox activity was determined as 0.638 g N/g VSSd (NRR 1.023 kg N/m3d) and 0.594 g N/g VSSd (NRR 1.241 kg N/m3d) during synthetic and real wastewater treatment, respectively. Both values are similar and this is probably the nitrogen removal capacity of the used anammox biomass. This indicates, that landfill leachate did not influence the nitrogen removal capacity of the anammox process.

Ammonium removal in landfill leachate using SBR technology: dispersed versus attached biomass

2017 ◽  
Vol 77 (1) ◽  
pp. 27-38 ◽  
Author(s):  
A. Sivic ◽  
N. Atanasova ◽  
S. Puig ◽  
T. Griessler Bulc
Keyword(s):  
Landfill Leachate ◽  
Sequencing Batch Reactor ◽  
Wastewater Treatment Plants ◽  
Batch Reactor ◽  
Ammonium Nitrogen ◽  
Operational Conditions ◽  
Ammonium Removal ◽  
N Removal ◽  
Attached Biomass ◽  
Pre Treatment

Abstract Large concentrations and oscillations of ammonium nitrogen (NH4+-N) in municipal landfill leachate pose considerable constraints to its further treatment in central wastewater treatment plants. The aim of this study was to evaluate and optimize two technologies for the pre-treatment of 600 L/day of landfill leachate: in particular, to optimize their operational conditions for NH4+-N removal up to a level appropriate for discharge to sewers, i.e. <200 mg/L. Both technologies were based on a sequencing batch reactor (SBR), with two different biomass processes: (A) SBR with dispersed/flocculated biomass and (B) SBR with biomass attached to carriers. The results revealed that both technologies successfully reduced the NH4+-N from 666 mg/L (on average) at the inflow to below 10 mg/L at the outflow with alkalinity adjustment in a 12-hour cycle. Both technologies achieved 96% removal efficiencies for NH4+-N. However, SBR with dispersed biomass showed higher flexibility under varying conditions due to the shorter adaptation time of the biomass.

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