scholarly journals Effect of organic loading rate on the performance of modified anaerobic baffled reactor treating landfill leachate containing heavy metals

2021 ◽  
Author(s):  
Imran Ahmad ◽  
Norhayati Abdullah ◽  
Shreeshivadasan Chelliapan ◽  
Santhana Krishnan ◽  
Iwamoto Koji ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Landfill Leachate ◽  
Loading Rate ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Anaerobic Baffled Reactor

Performance of an anaerobic baffled reactor (ABR) as a hydrolysis-acidogenesis unit in treating landfill leachate mixed with municipal sewage

2000 ◽  
Vol 42 (12) ◽  
pp. 115-121 ◽  
Author(s):  
B. Wang ◽  
Y. Shen
Keyword(s):  
Landfill Leachate ◽  
Loading Rate ◽  
Granular Sludge ◽  
Operational Performance ◽  
Municipal Sewage ◽  
Organic Loading Rate ◽  
Stable Operation ◽  
Organic Loading ◽  
Anaerobic Baffled Reactor ◽  
Biological Treatability

A study on the performance of an Anaerobic Baffled Reactor(ABR) as a hydrolysis-acidogenesis unit in treating the mixed wastewater of landfill leachate and municipal sewage in different volumetric ratios was carried out. The results showed that ABR substantially improved the biological treatability of the mixed wastewater by increasing its BOD5/COD ratio to 0.4–0.6 from the initial values of 0.15–0.3. The formation of bar-shaped granular sludge of 0.5–5 mm both in diameter and length with an SVI of 7.5–14.2 ml/g was observed in all compartments of the ABR when the organic loading rate reached 4.71 kgCOD/m3 · d. The effects of the ratios of NH4+-N/COD and COD/TP in mixed wastewater on the operational performance were also studied, from which it was found that a reasonable NH4+-N/COD ratio should be lower than 0.02, and the phosphorus supplement was needed when the volumetric ratio was higher than 4:6 for stable operation of ABR.

Effect of organic loading rate (OLR) on the performance of modified anaerobic baffled reactor (MABR) supported by slanted baffles

2017 ◽  
Vol 79 ◽  
pp. 56-63 ◽  
Author(s):  
Maizatul Asnie Mohd Aris ◽  
Shreeshivadasan Chelliapan ◽  
Mohd Fadhil Md Din ◽  
Aznah Nor Anuar ◽  
Rafidah Shahperi ◽  
...  
Keyword(s):  
Loading Rate ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Anaerobic Baffled Reactor

Treatment of Landfill Leachate with an Upflow Anaerobic Reactor Combining a Sludge Bed and a Filter

1989 ◽  
Vol 21 (4-5) ◽  
pp. 133-143 ◽  
Author(s):  
Juu-En Chang
Keyword(s):  
Landfill Leachate ◽  
Energy Recovery ◽  
Conversion Factor ◽  
Loading Rate ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Organic Loading ◽  
Efficient Treatment ◽  
Loading Rates ◽  
Operational Characteristics

The operational characteristics, efficiency of treatment of landfill leachate, and recovery of energy in a laboratory scale hybrid bioreactor were investigated. The reactor was a continuous upflow system combining a sludge bed and a filter and was operated at 35°C. This modified anaerobic sludge bed filter (SBF) reactor was found to provide efficient treatment of the organic constituents of the leachate. Removal of soluble COD was greater than 92% at organic loading rates less than 13 kg COD/m3/d, and removal decreased to 70% with an organic loading rate of 21.77 kg COD/m3/d. A solids balance indicated that 0.041 g volatile suspended solids (VSS) were produced per gram of COD removed. The removal of sulfate and soluble Fe was as high as 90% and 96.9%, respectively. An accumulation of Fe was observed. When the influent concentration of total Fe ranged from 160 to 515 mg/l, the total Fe concentration in the sludge was as high as 7,100 mg/l after a 185 day period of operation. The sulfate loading of the system affected energy recovery. When the sulfate loading rate increased from 102 to 683 mg/l/d, energy recovery decreased from 90% to 52%. The biogas conversion factor for methane was 0.31 1 at STP per gram of COD removed.

Anaerobic co-digestion of industrial waste landfill leachate and glycerin in a continuous anaerobic bioreactor with a fixed-structured bed (ABFSB): Effects of volumetric organic loading rate and alkaline supplementation

2021 ◽  
Vol 164 ◽  
pp. 1436-1446
Author(s):  
Thiago Morais de Castro ◽  
Eudes José Arantes ◽  
Mônica Sarolli Silva de Mendonça Costa ◽  
Jackeline Tatiane Gotardo ◽  
Fernando Hermes Passig ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Industrial Waste ◽  
Loading Rate ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Anaerobic Bioreactor ◽  
Waste Landfill

Treatment of municipal landfill leachate: Optimization of organic loading rate in a two-stage CSTR followed by aerobic degradation

2021 ◽  
Vol 163 ◽  
pp. 1210-1221
Author(s):  
Saeed Ghanbari Azad Pashaki ◽  
Mehdi Khojastehpour ◽  
Mohammadali Ebrahimi-Nik ◽  
Abbas Rohani
Keyword(s):  
Landfill Leachate ◽  
Loading Rate ◽  
Organic Loading Rate ◽  
Aerobic Degradation ◽  
Organic Loading ◽  
Two Stage ◽  
Municipal Landfill

Treatment of Low-Strength Wastewater Using an Anaerobic Baffled Reactor at Low Temperature

2013 ◽  
Vol 325-326 ◽  
pp. 822-826
Author(s):  
Zong Lian She ◽  
Xiao Hui Fu ◽  
Jian Wu ◽  
En Shi ◽  
Lai Li Zhao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Loading Rate ◽  
Oxygen Demand ◽  
Granular Sludge ◽  
Organic Loading Rate ◽  
Scanning Electron Micrographs ◽  
Organic Loading ◽  
Microbial Composition ◽  
Anaerobic Baffled Reactor ◽  
Low Strength

Treatment of low-strength wastewater of chemical oxygen demand (COD) around 500-1500 mg/L was studied in a 100 L capacity laboratory scale anaerobic baffled reactor (four compartments) at low temperature (17 oC-25 oC). The reactor was operated at influent COD concentrations of 1500, 1000 and 500 mg/L and hydraulic retention times (HRTs) of 24, 12 and 8 h, with the average COD removals changing from 94% to 83%. Compartment-wise studies of various parameters revealed that if the organic loading rate (OLR) was larger, the initial compartment played significant role in the removal of organics. The examinations of scanning electron micrographs (SEM) indicated that the microbial composition of granular sludge were obviously different in four compartments.

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