PCBs Removing in Aged Landfill Leachate by an Innovative Biofilm Reactor with Biomass Carriers - Luffa Sponges

2014 ◽  
Vol 670-671 ◽  
pp. 253-257
Author(s):  
Min Zhang ◽  
Shi Bin Xia
Keyword(s):  
Liquid Phase ◽  
Landfill Leachate ◽  
Natural Fiber ◽  
Biofilm Reactor ◽  
Total Pcbs ◽  
New Combination ◽  
Combination Process ◽  
Sequencing Batch Biofilm Reactor

PCBs removal in the aged leachate by a new combination process based on an innovative biofilm reactor with natural fiber media, combined coagulation with a two-staged sequencing batch biofilm reactor with Luffa Sponges (LS) as the biomass carriers (LS-SBBR), was studied in this paper. The results indicated that the total PCBs removal in the aged leachate was 51.97%, and the PCBs removals are mainly achieved by the removal of trichlorobiphenyls, the PCBs contents in sludge in the two-staged LS-SBBR were consistent with the conclusion that the PCBs removal in liquid phase of the second LS-SBBR was higher than that of the first LS-SBBR.

An Innovative Combination Process for PCBs Removing in Aged Landfill Leachate

2011 ◽  
Vol 343-344 ◽  
pp. 3-6 ◽  
Author(s):  
Yi Hua Yuan ◽  
Xin Tong Xiao ◽  
Shui Chun Xia ◽  
Bin Hua Luo ◽  
Xiao Zhen Chen ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Landfill Leachate ◽  
Removal Rate ◽  
Biofilm Reactor ◽  
Total Pcbs ◽  
New Combination ◽  
Combination Process ◽  
Sequencing Batch Biofilm Reactor

PCBs removal in the aged leachate by a new combination process, combined coagulation with a two-staged sequencing batch biofilm reactor with Luffa Sponges (LS) as the biomass carriers (LS-SBBR), was studied in this research. The results indicated that the removal rate of total PCBs in the aged leachate was 51.97%, and it was achieved mainly by the removal of trichlorobiphenyls, the PCBs contents in sludge in the two-staged LS-SBBR were consistent with the conclusion that the PCBs removal in liquid phase of the second LS-SBBR was higher than that of the first LS-SBBR.

Landfill leachate treatment using the sequencing batch biofilm reactor method integrated with the electro-Fenton process

2014 ◽  
Vol 68 (6) ◽  
Author(s):  
Dao-Bin Zhang ◽  
Xiao-Gang Wu ◽  
Yi-Si Wang ◽  
Hui Zhang
Keyword(s):  
Landfill Leachate ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Biological Oxygen Demand ◽  
Biofilm Reactor ◽  
Electrolysis Time ◽  
Fenton Process ◽  
Optimal Conditions ◽  
Leachate Treatment ◽  
Sequencing Batch Biofilm Reactor

AbstractA study was conducted on the treatment of landfill leachate by combining the sequencing batch biofilm reactor (SBBR) method with the electro-Fenton method. The reduction of chemical oxygen demand (COD), biological oxygen demand (BOD5), and ammonia nitrogen (NH4+-N) from the leachate by the SBBR method was investigated. For the electro-Fenton experiment, the changes in COD and total organic carbon (TOC) with the increase in H2O2 dosage and electrolysis time under optimal conditions were also analysed. The results showed that the average efficiencies of reduction of COD, BOD5, and NH4+ -N achieved using the SBBR method were 21.6 %, 54.7 %, and 56.1 %, respectively. The bio-effluent was degraded by the subsequent electro-Fenton process, which was rapid over the first 30 min then subsequently slowed. After 60 min of the electro-Fenton treatment, the efficiencies of reduction of TOC, COD, and BOD5 were 40.5 %, 71.6 %, and 61.0 %, respectively. There is a good correlation between the absorbance of leachate at 254 nm (UV254) and COD or TOC during the electro-Fenton treatment.

scholarly journals Characteristics of Nitrogen Removal from Old Landfill Leachate by Sequencing Batch Biofilm Reactor

2007 ◽  
Vol 4 (4) ◽  
pp. 211-214 ◽  
Author(s):  
Long Tengrui ◽  
Anas F. Al-Harbawi ◽  
Lin Ming Bo ◽  
Zhai Jun ◽  
Xiang Yu Long
Keyword(s):  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Biofilm Reactor ◽  
Sequencing Batch Biofilm Reactor

scholarly journals The performance and associated mechanisms of carbon transformation (PHAs, polyhydroxyalkanoates) and nitrogen removal for landfill leachate treatment in a sequencing batch biofilm reactor (SBBR)

RSC Advances ◽  
2018 ◽  
Vol 8 (74) ◽  
pp. 42329-42336 ◽  
Author(s):  
Wenjun Yin ◽  
Kai Wang ◽  
Jingtao Xu ◽  
Daoji Wu ◽  
Congcong Zhao
Keyword(s):  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Biofilm Reactor ◽  
Leachate Treatment ◽  
Sequencing Batch Biofilm Reactor

A modified sequencing batch biofilm reactor (SBBR, adding a pre-anoxic phase before the aeration phase) was used to treat landfill leachate.

Advanced treatment of landfill leachate by a new combination process in a full-scale plant

2009 ◽  
Vol 172 (1) ◽  
pp. 408-415 ◽  
Author(s):  
Huo-sheng Li ◽  
Shao-qi Zhou ◽  
Yan-bo Sun ◽  
Ping Feng ◽  
Jing-da Li
Keyword(s):  
Landfill Leachate ◽  
Full Scale ◽  
New Combination ◽  
Advanced Treatment ◽  
Combination Process

Nitrogen removal from livestock and poultry breeding wastewaters using a novel sequencing batch biofilm reactor

2010 ◽  
Vol 62 (11) ◽  
pp. 2599-2606 ◽  
Author(s):  
Hong Xiao ◽  
Ping Yang ◽  
Hong Peng ◽  
Yanzong Zhang ◽  
Shihuai Deng ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Heterotrophic Bacteria ◽  
Biofilm Reactor ◽  
N Accumulation ◽  
Sequencing Batch Biofilm Reactor ◽  
Poultry Breeding ◽  
Mode 2 ◽  
Do Concentration ◽  
Nitrification And Denitrification ◽  
Biological Nitrogen

A study was conducted regarding the biological nitrogen removal from the livestock and poultry breeding wastewater (LPBWs) using a novel sequencing batch biofilm reactor (SBBR). Nitrogen removal process was studied under three aeration strategies/modes, referred to as MODE 1, 2, and 3. The results showed that MODE 2 (one operation period: instant fill of LPBWs, 3.0 h aeration, 1.5 h non-aeration, 1.5 h aeration, 1.0 h non-aeration and rapid drain of treated LPBWs) performed the best in nitrogen removal. Under MODE 2, the removal efficiencies were as high as 96.1 and 92.1% for NH3-N and TN, respectively. Simultaneous nitrification and denitrification (SND), as well as shortcut nitrification and denitrification are likely to be the two main mechanisms for the nitrogen removal in this study. Nitrifying bateria were not inhibited by heterotrophic bacteria with C/N ratios ranging from 18.1 to 21.4 and DO concentration of 2.0 mg/l. Alternation between aeration and non-aeration played an important role in NO2−-N accumulation.

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