Performance of an anaerobic fluidized bed bioreactor (AnFBR) for digestion of primary municipal wastewater treatment biosolids and bioethanol thin stillage

2014 ◽  
Vol 71 ◽  
pp. 276-285 ◽  
Author(s):  
Mehran Andalib ◽  
Elsayed Elbeshbishy ◽  
Nizar Mustafa ◽  
Hisham Hafez ◽  
George Nakhla ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fluidized Bed ◽  
Municipal Wastewater ◽  
Municipal Wastewater Treatment ◽  
Thin Stillage ◽  
Fluidized Bed Bioreactor

Anaerobic-Aerobic Treatment of Municipal Wastewaters with Full-Scale Upflow Anaerobic Sludge Blanket and Attached Biofilm Reactors

1990 ◽  
Vol 22 (1-2) ◽  
pp. 475-482 ◽  
Author(s):  
C. Collivignarelli ◽  
G. Urbini ◽  
A. Farneti ◽  
A. Bassetti ◽  
U. Barbaresi
Keyword(s):  
Wastewater Treatment ◽  
Energy Consumption ◽  
Fluidized Bed ◽  
Municipal Wastewater ◽  
Fixed Bed ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Municipal Wastewater Treatment ◽  
Municipal Wastewaters ◽  
Anaerobic Sludge Blanket

The results of pilot experiments on municipal wastewater treatment using advanced processes are described. The most important aims of this research were to achieve reductions in energy consumption, environmental impact, quantity of stabilized sludge produced, and area necessary for plant construction. The pilot plant, which was constructed in the environs of the Senigallia (AN, Italy) municipal wastewater treatment plant, had a capacity of 500 to 2500 population equivalents (p.e.). In the most attractive system, municipal wastewaters with a low organic concentration were first treated in an upflow anaerobic sludge blanket (UASB) bioreactor with a capacity of 336 m3. Part of the effluent from this process was then conveyed to an anoxic biological fluidized bed (with a volume of 8 m3 filled with 3 m3 of quartzite sand) for pre-denitrification, and then to an aerobic fixed bed (with random plastic media and a volume of 8m3) for nitrification. It was also possible to treat the municipal wastewaters using the anaerobic fluidized bed directly, after microscreening or primary sedimentation. The research undertaken was intended to verify the reliability of these processes at ambient temperatures and with variable wastewater concentrations. The preliminary results obtained for COD, BOD, and N removal from municipal wastewaters indicate that this system is quite an attractive treatment alternative, mainly due to its low sludge production and energy consumption. These results will enable accurate design criteria to be identified for the construction of more economic treatment plants on a larger scale.

Behaviour of an anaerobic/aerobic pilot scale fluidized bed for the simultaneous removal of carbon and nitrogen

1994 ◽  
Vol 29 (10-11) ◽  
pp. 339-346 ◽  
Author(s):  
F. Fdez-Polanco ◽  
F. J. Real ◽  
P. A. Garcia
Keyword(s):  
Wastewater Treatment ◽  
Fluidized Bed ◽  
Municipal Wastewater ◽  
Fluidized Bed Reactor ◽  
Pilot Scale ◽  
Simultaneous Removal ◽  
Municipal Wastewater Treatment ◽  
Carbon And Nitrogen ◽  
Aerobic And Anaerobic ◽  
Simultaneous Elimination

Description of a pilot installation for municipal wastewater treatment. The simultaneous elimination of organic carbon and nitrogen carried out by a fluidized bed reactor with aerobic and anaerobic areas. The presentation of experimental results corresponding to a model of the flow and behaviour of the above mentioned elimination of organic material and nitrogen. Presentation of information concerning the characteristics of COD, N-NH3, N-NOx, pH, Redox Potential and D.O. throughout the reactor. Levels of purification reached: CODS>80%; (BOD5)S>90%; N-TKN>80%; N-NTotal>70%.

scholarly journals Wastewater Treatment From Pharmaceutical Substances With Filamentous Fungi

2021 ◽  
Author(s):  
◽  
Brigita Daļecka
Keyword(s):  
Wastewater Treatment ◽  
Fluidized Bed ◽  
Filamentous Fungi ◽  
Municipal Wastewater ◽  
Treatment Process ◽  
Pilot Scale ◽  
Municipal Wastewater Treatment ◽  
Wastewater Treatment Process ◽  
Fungal Strains ◽  
Pharmaceutical Substances

The ever-increasing concern about the widespread occurrence of pharmaceutical substances in the aquatic environment has been recognized as an emerging environmental issue, as it can cause undesirable effects on the ecosystem and human health. The current wastewater treatment methods are not designed to treat municipal wastewater from the contamination of various pharmaceutical substances. As a result, pharmaceuticals can enter the environment and pose a threat to life forms. Therefore, it is important to enhance the classical wastewater treatment process in order to meet the challenges by advancing the technologies. Currently, the biological treatment method with filamentous fungi has been considered a promising, cost-effective, and environmentally friendly method for removing pharmaceutical substances from municipal wastewater. Thesis “Wastewater Treatment from Pharmaceutical Substances with Filamentous Fungi” demonstrates the potential application of fungi in removing pharmaceutical substances and their expedience to incorporate into the classical municipal wastewater treatment process. The investigation focused on selecting suitable fungal strains that could adapt without adjusting physico-chemical parameters and compete with the microbial community in the municipal wastewater. Further, the Thesis investigated whether fungal strains could reduce nutrients and pharmaceutical substances in lab-scale and pilot-scale setup and the mechanisms of pharmaceutical substance removal. The research consists of two main stages. In the first stage, the batch-scale experiments were carried out under laboratory conditions, finding out the most suitable fungal strains for the removal of pharmaceutical substances from wastewater. The results demonstrated that fungi compete with each other, since higher removal efficiency was observed if the fungi were grown individually. Batch-scale experiments showed that Trametes versicolor (a laboratory strain) and Aspergillus luchuensis (an environmental isolate from a municipal wastewater treatment plant) can be promising strains for removing pharmaceutical substances in a non-sterile municipal wastewater treatment without the adjustment of pH level. Therefore, these strains were used for further study. In the second stage, the pilot-scale system with a fungal fluidized bed pelleted bioreactor was developed. The results demonstrated a high potential to remove phosphorus from municipal wastewater efficiently and successfully under a batch scale experiment with non-sterile municipal wastewater, while the results from the fluidized bed bioreactor did not demonstrate any significant decrease of phosphorus. Additionally, the fluidized pelleted bioreactor was optimized to perceive bioaugmentation as a strategy with the frequent addition of fungal biomass. The results from the optimization process showed that bioaugmentation is a relatively efficient approach to build on fungi in the fluidized pelleted bioreactor. Furthermore, the results from the AI-based platform with modeling study showed that optimization of bioaugmentation with fungi increases the removal efficiency of pharmaceutical substances from non-sterile municipal wastewater. The author of this study showed that both the literature review and the results from the batch and pilot-scale experiments provided new knowledge that can be used for future investigations of wastewater treatment with fungi. The Thesis will help to improve and better understand the possible application of fungi in the municipal wastewater treatment process.

STUDIES REGARDING THE PERFORMANCES OF MUNICIPAL WASTEWATER TREATMENT PROCESSES

2006 ◽  
Vol 5 (4) ◽  
pp. 685-692
Author(s):  
Elisabeta Chirila ◽  
Ionela Carazeanu Popovici ◽  
Techin Ibadula ◽  
Alice Iordache
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Municipal Wastewater Treatment ◽  
Treatment Processes

APPLICATION OF ORGANIC FLOCCULANTS FOR THE TREATMENT OF SLUDGE FROM MUNICIPAL WASTEWATER TREATMENT PLANTS

2013 ◽  
Vol 12 (1) ◽  
pp. 163-166 ◽  
Author(s):  
Mariana Turcu ◽  
Valentin Nedeff ◽  
Narcis Barsan ◽  
Emilian Florin Mosnegutu ◽  
Mirela Panainte
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Municipal Wastewater Treatment ◽  
Municipal Wastewater Treatment Plants

Membrane Bioreactors for Municipal Wastewater Treatment

2015 ◽  
Vol 4 (0) ◽  
pp. 9781780402925-9781780402925
Author(s):  
H. van der Roest ◽  
D. Lawrence ◽  
A. van Bentem
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Membrane Bioreactors ◽  
Municipal Wastewater Treatment

A study about the use of chemicals in conventional tertiary treatment. Performances comparison of three municipal wastewater treatment plants and pilot plant experiences

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
A. Iborra-Clar ◽  
J.A. Mendoza-Roca ◽  
A. Bes-Pií ◽  
J.J. Morenilla-Martínez ◽  
I. Bernácer-Bonora ◽  
...  
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Pilot Plant ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Secondary Effluent ◽  
Municipal Wastewater Treatment ◽  
Wastewater Reclamation ◽  
Valencian Region ◽  
Municipal Wastewater Treatment Plants

Rainfall diminution in the last years has entailed water scarcity in plenty of European regions, especially in Mediterranean areas. As a consequence, regional water authorities have enhanced wastewater reclamation and reuse. Thus, the implementation of tertiary treatments has become of paramount importance in the municipal wastewater treatment plants (WWTP) of Valencian Region (Spain). Conventional tertiary treatments consist of a physico-chemical treatment of the secondary effluent followed by sand filtration and UV radiation. However, the addition of coagulants and flocculants sometimes does not contribute significantly in the final water quality. In this work, results of 20-months operation of three WWTP in Valencian Region with different tertiary treatments (two without chemicals addition and another with chemicals addition) are discussed. Besides, experiments with a 2 m3/h pilot plant located in the WWTP Quart-Benager in Valencia were performed in order to evaluate with the same secondary effluent the effect of the chemicals addition on the final water quality. Results showed that the addition of chemicals did not improve the final water quality significantly. These results were observed both comparing the three full scale plants and in the pilot plant operation.

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