Modelling and simulation of filtration performance in membrane bioreactor systems for municipal wastewater treatment

2003 ◽  
Vol 3 (5-6) ◽  
pp. 267-273 ◽  
Author(s):  
T. Wintgens ◽  
J. Rosen ◽  
T. Melin ◽  
C. Brepols ◽  
K. Drensla ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Transfer Model ◽  
Municipal Wastewater Treatment ◽  
Permeability Evolution ◽  
Filtration Performance ◽  
Cake Layer ◽  
Filtration Unit

The paper outlines a model of the filtration performance of submerged capillary microfiltration modules in membrane bioreactor applications for wastewater treatment. The model was implemented for process simulation and calibrated by using operating data of the full-scale municipal wastewater treatment plant Rödingen, Germany, operated by Erft River Association (Erftverband), which is equipped with activated sludge treatment and microfiltration units for biomass retention. Mathematically recordable foundations of filtration resistances, such as cake layer forming and fouling, are presented along with a mass transfer model, describing the concentration polarisation on the feed-side and its dependence on a multiphase flow regime. The model simulates the long-term decrease in permeability of the membranes and outlines the influence of main operating parameters on flux performance. After parameter fitting for one filtration unit, the permeability evolution for a second unit could be also calculated.

scholarly journals LCA of a Membrane Bioreactor Compared to Activated Sludge System for Municipal Wastewater Treatment

Membranes ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 421
Author(s):  
Dimitra C. Banti ◽  
Michail Tsangas ◽  
Petros Samaras ◽  
Antonis Zorpas
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle ◽  
Activated Sludge ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Real Data ◽  
Municipal Wastewater Treatment ◽  
Conventional Activated Sludge

Membrane bioreactor (MBR) systems are connected to several advantages compared to the conventional activated sludge (CAS) units. This work aims to the examination of the life cycle environmental impact of an MBR against a CAS unit when treating municipal wastewater with similar influent loading (BOD = 400 mg/L) and giving similar high-quality effluent (BOD < 5 mg/L). The MBR unit contained a denitrification, an aeration and a membrane tank, whereas the CAS unit included an equalization, a denitrification, a nitrification, a sedimentation, a mixing, a flocculation tank and a drum filter. Several impact categories factors were calculated by implementing the Life Cycle Assessment (LCA) methodology, including acidification potential, eutrophication potential, global warming potential (GWP), ozone depletion potential and photochemical ozone creation potential of the plants throughout their life cycle. Real data from two wastewater treatment plants were used. The research focused on two parameters which constitute the main differences between the two treatment plants: The excess sludge removal life cycle contribution—where GWPMBR = 0.50 kg CO2-eq*FU−1 and GWPCAS = 2.67 kg CO2-eq*FU−1 without sludge removal—and the wastewater treatment plant life cycle contribution—where GWPMBR = 0.002 kg CO2-eq*FU−1 and GWPCAS = 0.14 kg CO2-eq*FU−1 without land area contribution. Finally, in all the examined cases the environmental superiority of the MBR process was found.

Nitrate estimation in the denitrifying post-filtration unit of a municipal wastewater treatment plant: the Viikinmäki case

2012 ◽  
Vol 65 (8) ◽  
pp. 1521-1529 ◽  
Author(s):  
M. Mulas ◽  
F. Corona ◽  
H. Haimi ◽  
L. Sundell ◽  
M. Heinonen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Municipal Wastewater ◽  
Linear Models ◽  
Treatment Plant ◽  
Municipal Wastewater Treatment ◽  
Soft Sensors ◽  
Intrinsic Nonlinearity ◽  
On Line ◽  
Filtration Unit

In this work we present and discuss the design of an array of soft-sensors to estimate the nitrate concentration in the denitrifying post-filtration unit at the Viikinmäki wastewater treatment plant in Helsinki (Finland). The developed sensors aim at supporting the existing hardware analyzers by providing a reliable back-up system in case of malfunction of the instruments. In the attempt to design easy to implement and interpretable sensors, computationally light linear models have been considered. However, due to the intrinsic nonlinearity of the process, also nonlinear but still computationally affordable models have been considered for comparison. The experimental results demonstrate the potential of the developed soft-sensors and the possibility for an on-line implementation in the plant's control system as alternative monitoring devices.

scholarly journals Elimination of typical polycyclic musks in a full-scale membrane bioreactor combined with anaerobic–anoxic–oxic process in municipal wastewater treatment plant

2018 ◽  
Vol 78 (7) ◽  
pp. 1459-1465
Author(s):  
Chun-Ying Wu ◽  
Lu Bai ◽  
Feng Gu ◽  
Wei Wei ◽  
Li-Xiu Guo ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Solid Phase ◽  
Treatment Plant ◽  
Gas Chromatography Mass Spectrometry ◽  
Municipal Wastewater Treatment ◽  
Municipal Wastewater Treatment Plant ◽  
Polycyclic Musks

Abstract The objective of this study was to investigate the removal of 11 synthetic polycyclic musks in a municipal wastewater treatment plant located in Jilin, China, by using a membrane bioreactor combined with anaerobic–anoxic–oxic process. The analysis of synthetic polycyclic musks was conducted with gas chromatography/mass spectrometry after solid-phase extraction. The removal efficiency of 11 synthetic polycyclic musks ranged from 65.9% (3-methylcyclopentadecanone) to 84.6% (Galoxolide) in the influent. Along the treatment process, it was observed that the anaerobic tank could remove the synthetic polycyclic musks effectively whereas the role of the membrane was to the musks, which could be ascribed to the relatively strong hydrophobic property of the musks. The sludge–water distribution coefficients (Kd values) as indicator of adsorption propensity for the sludge from anaerobic, anoxic, oxic and membrane tanks were measured. The high value of Kd, above 5.0 litres per gram of suspended solids, showed most of the musks could be removed by sludge through the adsorption process; thus the removal rate from the water phase caused by adsorption in the wastewater treatment plant can be predicted.

Treatment of High Salinity Wastewater Using an Intermittently Aerated Membrane Bioreactor

2015 ◽  
Vol 1092-1093 ◽  
pp. 1033-1036
Author(s):  
Kang Xie ◽  
Jing Song ◽  
Si Qing Xia ◽  
Li Ping Qiu ◽  
Jia Bin Wang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
High Salinity ◽  
Treatment Plant ◽  
Ammonia Nitrogen ◽  
Municipal Wastewater Treatment ◽  
Removal Efficiencies ◽  
Salinity Wastewater

In this study, high salinity wastewater was treated by an intermittently aerated membrane bioreactor (IAMBR) and the salinity loadings were set at 35g/L. The activated sludge was inoculated from the municipal wastewater treatment plant. The influent salinity level gradually increased from 0 to 35 g/L with every 5 g/L. With the salt concentration increased to 35 g/L, the performance of IAMBR was significantly affected by higher salinity. The removal efficiencies of the total organic carbon (TOC), ammonia nitrogen (NH4+-N) and total nitrogen (TN) were about 83%, 70% and 51%, respectively. It is indicated that the domestication of activated sludge from municipal wastewater treatment cannot obtain a better performance at high salinity.

WASTEWATER DISINFECTION BY UV AT TRANI MUNICIPAL PLANT

1994 ◽  
Vol 30 (4) ◽  
pp. 125-132 ◽  
Author(s):  
D. Carnimeo ◽  
E. Contini ◽  
R. Di Marino ◽  
F. Donadio ◽  
L. Liberti ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Continuous Operation ◽  
Secondary Effluent ◽  
Municipal Wastewater Treatment ◽  
South Italy ◽  
Wastewater Disinfection ◽  
Pilot Investigation ◽  
Effluent Characteristics

The pilot investigation on the use of UV as an alternative disinfectant to NaOCI was started in 1992 at Trani (South Italy) municipal wastewater treatment plant (335 m3/h). The results collected after six months continuous operation enabled us to compare UV and NaOCl disinfection effectiveness on the basis of secondary effluent characteristics, quantify photoreactivation effects, evidence possible DBP formation and assess costs.

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