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

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.

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.

Anaerobic Treatment of Polyethylene Terephthalate (PET) Wastewater from Lab to Full Scale

1999 ◽  
Vol 40 (8) ◽  
pp. 229-236 ◽  
Author(s):  
F. Fdz-Polanco ◽  
M. D. Hidalgo ◽  
M. Fdz-Polanco ◽  
P. A. García Encina
Keyword(s):  
Polyethylene Terephthalate ◽  
Loading Rate ◽  
Treatment Plant ◽  
Textile Wastewater ◽  
Anaerobic Treatment ◽  
Cod Removal ◽  
Organic Loading Rate ◽  
Foam Formation ◽  
Organic Loading ◽  
Start Up

In the last decade Polyethylene Terephthalate (PET) production is growing. The wastewater of the “Catalana de Polimers” factory in Barcelona (Spain) has two main streams of similar flow rate, esterification (COD=30,000 mg/l) and textile (COD=4000 mg/l). In order to assess the anaerobic treatment viability, discontinuous and continuous experiments were carried out. Discontinuous biodegradability tests indicated that anaerobic biodegradability was 90 and 75% for esterification and textile wastewater. The textile stream revealed some tendency to foam formation and inhibitory effects. Nutrients, micronutrients and alkali limitations and dosage were determined. A continuous lab-scale UASB reactor was able to treat a mixture of 50% (v) esterification/textile wastewater with stable behaviour at organic loading rate larger than 12 g COD/l.d (0.3 g COD/g VSS.d) with COD removal efficiency greater than 90%. The start-up period was very short and the recuperation after overloading accidents was quite fast, in spite of the wash-out of solids. From the laboratory information an industrial treatment plant was designed and built, during the start-up period COD removal efficiencies larger than 90% and organic loading rate of 0.6 kg COD/kg VSS.d (5 kg COD/m3.d) have been reached.

Impact of organic loading rate and reactor design on thermophilic anaerobic digestion of mixed supermarket waste

2021 ◽  
Vol 123 ◽  
pp. 52-59
Author(s):  
L. Megido ◽  
L. Negral ◽  
Y. Fernández-Nava ◽  
B. Suárez-Peña ◽  
P. Ormaechea ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Loading Rate ◽  
Reactor Design ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Thermophilic Anaerobic Digestion

scholarly journals The use of the carbon/nitrogen ratio and specific organic loading rate as tools for improving biohydrogen production in fixed-bed reactors

2015 ◽  
Vol 5 ◽  
pp. 46-54 ◽  
Author(s):  
Mélida del Pilar Anzola-Rojas ◽  
Samantha Gonçalves da Fonseca ◽  
Cynthia Canedo da Silva ◽  
Valeria Maia de Oliveira ◽  
Marcelo Zaiat
Keyword(s):  
Loading Rate ◽  
Fixed Bed ◽  
Biohydrogen Production ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Fixed Bed Reactors ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio
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