Enhancing filterability of activated sludge from landfill leachate treatment plant by applying electrical field ineffective on bacterial life

2017 ◽  
Vol 24 (11) ◽  
pp. 10364-10372 ◽  
Author(s):  
Gulizar Kurtoglu Akkaya ◽  
Elif Sekman ◽  
Selin Top ◽  
Ece Sagir ◽  
Mehmet Sinan Bilgili ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Landfill Leachate ◽  
Treatment Plant ◽  
Leachate Treatment ◽  
Electrical Field

scholarly journals Metagenomic Insights Into Functional and Taxonomic Compositions of an Activated Sludge Microbial Community Treating Leachate of a Completed Landfill: A Pathway-Based Analysis

2021 ◽  
Vol 12 ◽  
Author(s):  
Shohei Yasuda ◽  
Toshikazu Suenaga ◽  
Laura Orschler ◽  
Shelesh Agrawal ◽  
Susanne Lackner ◽  
...  
Keyword(s):  
Microbial Community ◽  
Activated Sludge ◽  
Mixed Culture ◽  
Landfill Leachate ◽  
Treatment Plant ◽  
Metabolic Potential ◽  
Leachate Treatment ◽  
Microbial Taxonomy ◽  
Engineered Systems ◽  
Metagenome Sequencing

Upcycling wastes into valuable products by mixed microbial communities has recently received considerable attention. Sustainable production of high-value substances from one-carbon (C1) compounds, e.g., methanol supplemented as an external electron donor in bioreactors for wastewater treatment, is a promising application of upcycling. This study undertook a gene-centric approach to screen valuable production potentials from mixed culture biomass, removing organic carbon and nitrogen from landfill leachate. To this end, the microbial community of the activated sludge from a landfill leachate treatment plant and its metabolic potential for the production of seven valuable products were investigated. The DNA extracted from the activated sludge was subjected to shotgun metagenome sequencing to analyze the microbial taxonomy and functions associated with producing the seven products. The functional analysis confirmed that the activated sludge could produce six of the valuable products, ectoine, polyhydroxybutyrate (PHB), zeaxanthin, astaxanthin, acetoin, and 2,3-butanediol. Quantification of the detected functional gene hit numbers for these valuable products as a primary trial identified a potential rate-limiting metabolic pathway, e.g., conversion of L-2,4-diaminobutyrate into N-γ-acetyl-L2,4,-diaminobutyrate during the ectoine biosynthesis. Overall, this study demonstrated that primary screening by the proposed gene-centric approach can be used to evaluate the potential for the production of valuable products using mixed culture or single microbe in engineered systems. The proposed approach can be expanded to sites where water purification is highly required, but resource recovery, or upcycling has not been implemented.

Anodic Oxidation of Effluents from Stages of MBR-UF Municipal Landfill Leachate Treatment Plant

2020 ◽  
Vol 37 (10) ◽  
pp. 702-714
Author(s):  
Zubeda Ukundimana ◽  
Mehmet Kobya ◽  
Philip Isaac Omwene ◽  
Erhan Gengec ◽  
Orhan Taner Can
Keyword(s):  
Anodic Oxidation ◽  
Landfill Leachate ◽  
Treatment Plant ◽  
Leachate Treatment ◽  
Municipal Landfill

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.

Antibiotic resistome in a landfill leachate treatment plant and effluent-receiving river

Chemosphere ◽  
2020 ◽  
Vol 242 ◽  
pp. 125207 ◽  
Author(s):  
Jia-Ying Wang ◽  
Xin-Li An ◽  
Fu-Yi Huang ◽  
Jian-Qiang Su
Keyword(s):  
Landfill Leachate ◽  
Treatment Plant ◽  
Leachate Treatment ◽  
Receiving River

Impact of extra-cellular polymeric substances on the filterability of activated sludge in membrane bioreactors for landfill leachate treatment

Desalination ◽  
2005 ◽  
Vol 179 (1-3) ◽  
pp. 181-190 ◽  
Author(s):  
K. Tarnacki ◽  
S. Lyko ◽  
T. Wintgens ◽  
T. Melin ◽  
F. Natau
Keyword(s):  
Activated Sludge ◽  
Landfill Leachate ◽  
Membrane Bioreactors ◽  
Leachate Treatment
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