High organic removal of landfill leachate using a continuous flow sequencing batch biofilm reactor (CF-SBBR) with different biocarriers

2021 ◽  
pp. 147680
Author(s):  
Nguyen Hong Dan ◽  
Tran Le Luu
Keyword(s):  
Landfill Leachate ◽  
Continuous Flow ◽  
Biofilm Reactor ◽  
Sequencing Batch Biofilm Reactor ◽  
Organic Removal

Degradation of chlorophenols by biofilms on semi-permeable membranes in two types of fixed bed reactors

1995 ◽  
Vol 32 (8) ◽  
pp. 205-212 ◽  
Author(s):  
A. Wobus ◽  
S. Ulrich ◽  
I. Röske
Keyword(s):  
Continuous Flow ◽  
Plug Flow ◽  
Fixed Bed ◽  
Biofilm Reactor ◽  
Flow Conditions ◽  
Concentration Gradients ◽  
Batch Mode ◽  
Sequencing Batch Biofilm Reactor ◽  
Fixed Bed Reactors ◽  
Protozoan Community

Two identical fixed bed reactors containing gas-permeable tubings as carrier material were compared for the elimination of chlorophenols. Under plug flow conditions, the continuous flow operation resulted in a stratification of biomass due to concentration gradients. To achieve a homogeneous colonization, the sequencing batch mode has been applicated to one biofilm reactor (Sequencing Batch Biofilm Reactor - SBBR). Concentration gradients after filling, probably due to sorption phenomena, caused an uneven distribution of biomass in the SBBR. However, the colonization of the SBBR was more homogeneous as compared to the continuously operated reactor (CFBR). As to the elimination of a trichlorophenol (2,4,5-trichlorophenol - TCP), no significant differences between the SBBR and the CFBR were observed with regard to its sensitivity against load surges. It is to be supposed that sorption to the biofilm was included in the elimination of chlorophenols. A higher diversity of protozoan community and meiofauna is obviously to be attributed to continuous flow.

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.

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.

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.

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

Pilot-plant experiments with moving-bed biofilm reactors

1997 ◽  
Vol 36 (1) ◽  
pp. 43-50 ◽  
Author(s):  
G. Pastorelli ◽  
G. Andreottola ◽  
R. Canziani ◽  
E. de Fraja Frangipane ◽  
F. De Pascalis ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Pilot Plant ◽  
Continuous Flow ◽  
Carbon Sources ◽  
Biofilm Reactor ◽  
Moving Bed ◽  
Carbon And Nitrogen ◽  
Loading Rates ◽  
Biofilm Reactors ◽  
Sequencing Batch Biofilm Reactor

A flexible pilot plant, fed with primary settled wastewater, was used to study (1) organic carbon and nitrification in a two(three)-stage continuous-flow aerobic process and (2) organic carbon and nitrogen removal in a heterotrophic moving-bed sequencing batch biofilm reactor (MBSBBR) for denitrification and in a continuous-flow autotrophic moving-bed biofilm reactor (MBBR) for nitrification. In both experiments the same polyethylene biofilm carriers were used. Filtered COD removal rates in aerobic conditions appear to be proportional to the corresponding loading rates up to 8 gCOD m−2 d−1. Nitrification tests, performed in oxygen limiting conditions and ammonia limiting conditions, showed that the reaction rate was nearly first order with respect to dissolved oxygen due to liquid film diffusion. Denitrification tests, performed without external carbon sources, showed that the denitrification rate never fell below 0.3 gNO3−-N m−2 d−1 even at very low biodegradable filtered COD loading rates.

Elimination of p-chlorophenol in biofilm reactors - a comparative study of continuous flow and sequenced batch operation

1995 ◽  
Vol 31 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Hans-Peter Kaballo ◽  
Yuangang Zhao ◽  
Peter A. Wilderer
Keyword(s):  
Continuous Flow ◽  
Fixed Bed ◽  
Experimental Studies ◽  
Biofilm Reactor ◽  
Sorption Properties ◽  
Batch Mode ◽  
Biofilm Reactors ◽  
Sequencing Batch Biofilm Reactor ◽  
High Flexibility ◽  
Better Than

The chlorophenol elimination potential of two identically designed fixed bed biofilm reactors was compared. One of the reactors was operated continuously, and the other in sequenced batch mode. In the continuous flow biofilm reactor (CFBR) a stratification of biomass occurred, whereas biomass in the sequencing batch biofilm reactor (SBBR) developed uniformly due to the use of an advanced fill strategy. Recirculation was needed to overcome biosorption during filling and to achieve equal biomass distribution. Under shock loading, degradation in SBBR was better than in CFBR. However, even the CFBR showed a high flexibility, i.e. it performed better than expected. Sorption properties in both reactors seem to be responsible for the flexibility in terms of break through. Experimental studies and modelling of sorption properties are necessary to describe the response of biofilm reactors to unsteady state conditions.

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.

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