Anaerobic digestion of a petrochemical effluent using an upflow anaerobic sludge blanket reactor

1984 ◽  
Vol 6 (11) ◽  
pp. 741-746 ◽  
Author(s):  
L. H. Nel ◽  
J. De Haast ◽  
T. J. Britz
Keyword(s):  
Anaerobic Digestion ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Anaerobic Sludge Blanket

scholarly journals A VFA-based controller for anaerobic digestion of industrial winery wastewater

2018 ◽  
Vol 78 (9) ◽  
pp. 1871-1878 ◽  
Author(s):  
Gustavo Vargas-Morales ◽  
Rolando Chamy ◽  
Santiago García-Gen
Keyword(s):  
Anaerobic Digestion ◽  
Volatile Fatty Acids ◽  
Upflow Anaerobic Sludge Blanket ◽  
Uasb Reactor ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Variable Gain ◽  
Winery Wastewater ◽  
Empirical Function ◽  
Anaerobic Sludge Blanket

Abstract A variable-gain controller for anaerobic digestion of industrial winery wastewater is presented. A control law using both volatile fatty acids (VFA) and methane production rate as controlled variables and organic loading rate (OLR) as manipulated variable is defined. The process state is quantitatively estimated by an empirical function comparing VFA measurements against a setpoint value; then, it is modified with a second empirical function that compares the methane flow rate with a maximum capacity reference, and finally it is adjusted with a third factor considering the actual hydraulic retention time. The variable-gain function determines the extent of the OLR change applied to the system. The controller was successfully validated in a 95 L upflow-anaerobic-sludge-blanket (UASB) reactor, treating industrial wine wastewater at OLR ranged between 2.0 and 39.2 g COD/L d for 120 days at mesophilic conditions. Higher performance was achieved contrasted with a conventional strategy carried out in a parallel UASB unit.

Biogas Production Using Codigestion of Organic Residues with Malt Bagasse

2021 ◽  
Vol 47 (1) ◽  
pp. 174-180
Author(s):  
Henrique Sousa do Nascimento ◽  
Geísa Vieira Vasconcelos Magalhães ◽  
José Demontier Vieira de Souza-Filho ◽  
Ronaldo Stefanutti ◽  
Ari Clecius Alves de Lima ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Organic Waste ◽  
Biogas Production ◽  
Upflow Anaerobic Sludge Blanket ◽  
Uasb Reactor ◽  
Anaerobic Sludge ◽  
Operational Conditions ◽  
Different Types ◽  
Anaerobic Sludge Blanket ◽  
Bagasse Waste

This study evaluated the use of two anaerobic bioreactors in the production of biogas from malt bagasse waste. Bioreactor B1 was loaded with a mixture of 600mL of anaerobic sludge, 300g of organic waste, taken from an upflow anaerobic sludge blanket (UASB) reactor, and 300g of malt bagasse residue. Bioreactor B2 was loaded with a mixture of 600g of organic waste and 600mL of anaerobic sludge taken from an UASB reactor. The anaerobic digestion processes lasted for 10 weeks and the produced methane fraction was measured in 5 occasions. Bioreactor B1 presented low methane production (7.2%) but Bioreactor B2 showed a much more signif- icant percentage, reaching up to 48.3%. The experiments were capable of reproducing largescale operational conditions, enabling increased results in biogas capturing and processing, strengthening sustainability and energy efficiency. The experiment also showed the importance of studying different types of organic waste, seeking optimization of anaerobic digestion pro- cesses.

scholarly journals Anaerobic Digestion and Biogas Production: Combine Effluent Treatment with Energy Generation in UASB Reactor as Biorefinery Annex

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Mauro Berni ◽  
Ivo Dorileo ◽  
Grazielle Nathia ◽  
Tânia Forster-Carneiro ◽  
Daniel Lachos ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Industrial Effluents ◽  
Fuel Oil ◽  
Effluent Treatment ◽  
Upflow Anaerobic Sludge Blanket ◽  
Uasb Reactor ◽  
Industrial Plant ◽  
Anaerobic Sludge ◽  
Anaerobic Sludge Blanket

The issue of residues and industrial effluents represents an unprecedented environmental challenge in terms of recovery, storage, and treatment. This work discusses the perspectives of treating effluents through anaerobic digestion as well as reporting the experience of using an upflow anaerobic sludge blanket (UASB) reactor as biorefinery annex in a pulp and paper industrial plant to be burned in the boilers. The performance of the reactors has shown to be stable under considerable variations in load and showed a significant potential in terms of biogas production. The reactors UASB treated 3600.00 m3of effluent daily from a production of 150.00 tons. The biogas generation was 234.000 kg/year/mill, equivalent in combustible oil. The results of methane gas generated by the anaerobic system UASB (8846.00 kcal/m3) dislocate the equivalent of 650.0 kg of combustible oil (10000.00 kcal/kg) per day (or 234.000 kg/year). The production of 8846.00 Kcal/m3of energy from biogas can make a run at industrial plant for 2 hours. This substitution can save US$ 128.700 annually (or US$ 550.0 of fuel oil/tons). The companies are invested in the use of the biogas in diesel stationary motors cycle that feed the boilers with water in case of storage electricity.

Assessment on the performance of a series of two UASB reactors compared against one of the same total volume using Anaerobic Digestion Model No 1 (ADM1)

2009 ◽  
Vol 59 (4) ◽  
pp. 647-652 ◽  
Author(s):  
Iván López ◽  
Mauricio Passeggi ◽  
Alejandro Pedezert ◽  
Liliana Borzacconi
Keyword(s):  
Experimental Data ◽  
Anaerobic Digestion ◽  
Liquid Phase ◽  
Hydraulic Retention Time ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Total Conversion ◽  
Anaerobic Sludge Blanket ◽  
Uasb Reactors ◽  
Spray Dried

The ADM1 is applied to simulate the behaviour of an Upflow Anaerobic Sludge Blanket Reactor (UASB) treating blood powder (spray dried blood meal) wastewater. Considering a completely mixed liquid phase, the model is defined by a set of differential equations which can be numerically solved. Experimental data allows validating the output of the model which is then used for performing numerous simulations. A single reactor is compared to a series of two identical reactors of half the volume each. For the same total hydraulic retention time, the series reaches an outlet concentration 74% inferior to that of the single reactor. Furthermore, for the same total conversion the volume required by the series is 43% of that of the single reactor.

Anaerobic digestion of synthetic food waste-cardboard mixtures in a semi-continuous two-stage system

2019 ◽  
Vol 3 (12) ◽  
pp. 3582-3593 ◽  
Author(s):  
Caitlin M. Asato ◽  
Jorge Gonzalez-Estrella ◽  
Donald S. Skillings ◽  
Andrea Vargas Castaño ◽  
James J. Stone ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Food Waste ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Two Stage ◽  
In Series ◽  
Corrugated Cardboard ◽  
Stage System ◽  
Continuously Stirred Tank Reactor ◽  
Anaerobic Sludge Blanket

A two-stage anaerobic digestion system consisting of a continuously-stirred tank reactor and upflow anaerobic sludge blanket (CSTR-UASB) in series was evaluated for semi-continuous digestion of food waste and corrugated cardboard mixtures.

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