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Academic literature on the topic 'COD efficiency effluent influent membrane bioreactor treatment'
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Journal articles on the topic "COD efficiency effluent influent membrane bioreactor treatment"
1
Artiga, P., M. Carballa, J. M. Garrido, and R. Méndez. "Treatment of winery wastewaters in a membrane submerged bioreactor." Water Science and Technology 56, no. 2 (2007): 63–69. http://dx.doi.org/10.2166/wst.2007.473.
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Wine production is seasonal, and thus the wastewater flow and its chemical oxygen demand (COD) concentrations greatly vary during the vintage and non-vintage periods, as well as being dependant on the winemaking technologies used, e.g. red, white or special wines production. Due to this seasonal high variability in terms of organic matter load, the use of membrane biological reactors (MBR) could be suitable for the treatment of such wastewaters. MBR offers several benefits, such as rapid start up, good effluent quality, low footprint area, absence of voluminous secondary settler and its operation is not affected by the settling properties of the sludge. A pilot scale hollow fibre MBR system of 220 L was fed by adequately diluting white wine with tap water, simulating wastewaters generated in wineries. The COD in the influent ranged between 1,000 and 4,000 mg/L. In less than 10 days after the start up, the system showed a good COD removal efficiency. The COD elimination percentage was always higher than 97% regardless of the organic loading rate (OLR) applied (0.5–2.2 kg COD/m3 d), with COD concentrations in the effluent ranging between 20 and 100 mg/L. Although the biomass concentration in the reactor increased from 0.5 to 8.6 g VSS/L, the suspended solids concentration in the effluent was negligible. Apparent biomass yield was estimated in 0.14 g VSS/g COD.
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Xia, Ben Li, Li Wang, and Yuan Liu. "Experimental Study on Combined Process of EOW and MBR for Treatment of UDMH Wastewater." Advanced Materials Research 343-344 (September 2011): 303–6. http://dx.doi.org/10.4028/www.scientific.net/amr.343-344.303.
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The combined process of Electrolyzed oxidizing water(EOW)and membrane bioreactor(MBR)was applied to treat the UDMH wastewater, and its treatment efficiency was compared with that by MBR alone．In the combined process, the treatment efficiency of UDMH wastewater is better than MBR alone. When the influent COD and UDMH are 800 to 1000 mg•L-1and 300 mg•L-1, the effluent COD and UDMH are about 55 mg•L-1and 0.3 to 1.5 mg•L-1respectively, close the demand of the Discharge standard of water pollutants for space propellant．In the MBR process alone，the effluent COD and UDMH are about 90 mg•L-1and 45 mg•L-1respectively, which worse than the combined process EOW-MBR, especially the effluent UDMH far beyond the demand of the Discharge standard of water pollutants for space propellant．
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Joudah, AL-Saadi Anmar, and Gabriel Racoviteanu. "Membrane Bioreactors Used for Treatment of Food Industry Effluents." E3S Web of Conferences 85 (2019): 07013. http://dx.doi.org/10.1051/e3sconf/20198507013.
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Effluents from the food industry determine pollution problems due to high COD and BOD concentrations. Compared to other industrial divisions, food industry requires large amounts of water. In this study, MBR was based on submerged hollow fibers membranes functioning by low vacuum. Two phases of bioreactor treatment were carried out with different HRTs (2-8) and (2-24) hours. Sixteen water samples collected from the influent and the effluent of the bioreactor during the two phases. NaOCl compound was added during the backwashing process for all tests, and the same compound was added with mixed liquid for the second test at period 24 hour of aeration. The samples were tested for twelve water quality tests: temperature, Dissolved Oxygen, pH, Turbidity, Total Suspended Solids, Mixed Liquor Suspended Solids, Chemical Oxygen Demand, Biochemical Oxygen Demand, Nitrate Nitrogen, Ammonium Nitrogen, Total Phosphate, and Ortho Phosphate. The results indicated that the bioreactor system can be used efficiently to treat industrial wastewater from the food industry. The efficiency of the technology was evaluated with sodium hypochlorite addition to removing the adherent bacteria on the surface area of hollow fibers. The results showed that the bioreactor under the conditions of the second phase was excellent in removing Turbidity, TSS, COD, and BOD5 with a removal efficiency 99.96%, 89.52%, 93.56%, and 99.36% respectively, when added 82 ml of NaOCl in the bioreactor tank, and was a good removing of TP, and Ortho-P with removal efficiency 60.76% and 48.95% respectively. Otherwise, a negative effect of NaOCl on both of NO3-N and NH4-N was obtained in term of removal where the minimum removal efficiency was observed when adding 82 ml of NaOCl under the conditions of the second phase.
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Sawadogo, B., Y. Konaté, G. Lesage, et al. "Brewery wastewater treatment using MBR coupled with nanofiltration or electrodialysis: biomass acclimation and treatment efficiency." Water Science and Technology 77, no. 11 (2018): 2624–34. http://dx.doi.org/10.2166/wst.2018.232.
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Abstract Breweries release significant amounts of wastewater loaded with various organic and mineral materials. Prior studies of membrane bioreactor (MBR) wastewater treatment have been conducted with very little interest granted to the conditions of biomass acclimation. This study displays biomass behavior during brewery wastewater treatment by an aerobic MBR. In addition, nanofiltration and electrodialysis have been studied as potential post-treatment to decrease mineral concentrations and permit further water reuse for agriculture. An anoxic/aerobic laboratory MBR, associated with a flat sulfonated polyether membrane was used for synthetic brewery wastewater treatment. Biomass acclimation was performed using a feeding substrate. Organic concentrations in the MBR influent varied from 700 mg COD/L to 10,600 mg COD/L (COD: chemical oxygen demand) for 110 days. The results indicate a good acclimation to effluent with high salts and organic matter loads. Steady evolution of biomass concentration and activities was achieved after 90 days of operation. A reduction of COD of around 95% was obtained with MBR and up to 99% with nanofiltration post-treatment for the reconstructed brewery effluent with an organic loading rate of 7 g COD/L·d and a solid and hydraulic retention time of 30 days and 36 hours. A good reduction of the salt content was also recorded primarily with the nanofiltration and electrodialysis processes.
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Singh, Surya Pratap, Rakesh Chandra Gaur, and Meena Kumari Sharma. "Performance of a full-scale membrane bioreactor Technology for hostel wastewater treatment for reuse purposes." International Journal of Advance Research in Science and Engineering 7, sp.1 (2018): 430–37. https://doi.org/10.5281/zenodo.5513604.
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Membrane Bio Reactor (MBR) system, designed to achieve high-quality effluent within a small overall footprint. The MBR process utilizes the well-proven activated sludge process but replaces conventional final settlement with an ultrafine membrane which effectively filters the final effluent. Membrane bioreactors (MBRs) can be broadly defined as systems integrating biological degradation of waste products with membrane filtration. They have proven quite effective in removing organic and inorganic contaminants as well as biological entities from wastewater. Advantages of the MBR include good control of biological activity, high-quality effluent free of bacteria and pathogens, smaller plant size, and higher organic load rates. The quality of the MBR permeates for hostel wastewater conforms largely to the microbiological standards for reusable (e.g. flushing, cleaning, and agricultural use). This study was undertaken to determine the efficiency of the MBR treatment plant in terms of its physical, chemical and biological characteristics of influent and effluent wastewater. The removal efficiencies of the treatment plant (Turbidity>99%, TSS>98%, BOD>96%, COD>93% and MPN>99%) are very high compared to another treatment plant. Membrane technology is the most important method in achieving the objective of the reuse of wastewater in an era of water scarcity in many parts of the world.
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Çetin, Ender, Vahit Balahorlu, and Sevgi Güneş-Durak. "Hybrid MBR–NF Treatment of Landfill Leachate and ANN-Based Effluent Prediction." Processes 13, no. 6 (2025): 1776. https://doi.org/10.3390/pr13061776.
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This study presents the long-term performance evaluation of a full-scale hybrid membrane bioreactor (MBR)–nanofiltration (NF) system for the treatment of high-strength municipal landfill leachate from the Istanbul–Şile Kömürcüoda facility. Over a 16-month operational period, influent and effluent samples were analyzed for key parameters, including chemical oxygen demand (COD), ammonium nitrogen (NH4+-N), total phosphorus (TP), suspended solids (SS), and temperature. The MBR unit consistently achieved high removal efficiencies for COD and NH4+-N (93.5% and 98.6%, respectively), while the NF stage provided effective polishing, particularly for phosphorus, maintaining a TP removal above 95%. Seasonal analysis revealed that the biological performance peaked during spring, likely due to optimal microbial conditions. To support intelligent control strategies, artificial neural network (ANN) models were developed to predict effluent COD and NH4+-N concentrations using influent and operational parameters. The best-performing ANN models achieved R2 values of 0.861 and 0.796, respectively. The model’s robustness was validated through RMSE, MAE, and 95% confidence intervals. Additionally, Principal Component Analysis (PCA) and Random Forest algorithms were employed to determine the parameter importance and nonlinear interactions. The findings demonstrate that the integration of hybrid membrane systems with AI-based modeling can enhance treatment efficiency and forecasting capabilities for landfill leachate management, offering a resilient and data-driven approach to sustainable operation.
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Ahn, K. H., K. G. Song, I. T. Yeom, and K. Y. Park. "Performance comparison of direct membrane separation and membrane bioreactor for domestic wastewater treatment and water reuse." Water Supply 1, no. 5-6 (2001): 315–23. http://dx.doi.org/10.2166/ws.2001.0128.
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Two pilot-scale wastewater treatment systems - direct membrane separation (DMS) and membrane bioreactor (MBR) systems - were designed and constructed in order to investigate the feasibility of membrane filtration technology for domestic wastewater treatment and water reuse. A submerged-type hollow-fiber microfiltration (HF-MF) membrane module with pore size of 0.1μm was employed to build each pilot system. The systems were tested using low- and high-strength domestic wastewaters and the system performance was continuously monitored for a long period to compare filtration characteristics and effluent quality in each system. The MBR system showed much better performance than the DMS system in terms of filtration characteristics and effluent quality. Even though the mixed-liquor suspended solid (MLSS) content in the MBR system was much higher than that in the DMS system, the MBR filtration resistance was much lower than the DMS filtration resistance. The DMS system was not able to remove dissolved organic matter, which seemed to be a major component of membrane fouling. The MBR effluent quality such as COD, BOD, TOC and T-N was more stable and better than the DMS. In the MBR process, the organic removal efficiency remained more than 95% regardless of fluctuation in influent qualities. The effluent quality of both systems was satisfying the legal standards for water reuse in Korea. Rejection of pathogenic microorganisms by membrane filtration was also investigated.
8
Sung, Soo Yoo1 &. Hyun Wook Ji*2. "OPERATING FACTOR OPTIMIZATION OF MODIFIED 4-STAGE BARDENPHO PROCESS FOR PIGGERY WASTEWATER TREATMENT." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES 5, no. 7 (2018): 383–93. https://doi.org/10.5281/zenodo.1320145.
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This study was conducted for finding the suitable operational factors of a modified 4-stage Bardenpho process including BJR and membrane bioreactor, a TJC and an activated carbon reactor for piggery wastewater treatment, as well as ways of treating piggery wastewater that can be discharged at the required water quality level. As a result, the TN removal efficiency of the modified 4-stage Bardenpho process was high at the influent flow rate of 4-6 m<sup>3</sup>/day with internal recycle flow rate of 4.5-5.0 Q<sub>in</sub> and then the SDNRs of the 1st anoxic reactor and the SNRs of BJR ranged 1.63-3.54 mg NO<sub>3</sub><sup>-</sup>-N/g MLVSS·hr and 38.3-74.2 mg NH<sub>4</sub><sup>+</sup>-N/g MLVSS·hr, respectively. Also, the average removal efficiency of COD<sub>mn</sub> and COD<sub>cr</sub> ranged 74.0% and 63.5% at the ozone dose of 0.124 kg/hr. Therefore, the average concentrations of COD<sub>mn</sub>, COD<sub>cr</sub>, and TN in the final effluent were 48, 158, and 56 mg/L, respectively, which met the Korean effluent standards at the operation was conducted under suitable conditions at influent flow rate of 4-6 m<sup>3</sup>/day with internal recycle flow rate of 4.5-5.0 Q<sub>in</sub> and ozone dose of 0.124 kg/hr.
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Dyosile, Phumeza Akhona, Cebisa Mdladla, Mahomet Njoya, Moses Basitere, Seteno Karabo Obed Ntwampe, and Ephraim Kaskote. "Assessment of an Integrated and Sustainable Multistage System for the Treatment of Poultry Slaughterhouse Wastewater." Membranes 11, no. 8 (2021): 582. http://dx.doi.org/10.3390/membranes11080582.
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This paper assesses the performance of an integrated multistage laboratory-scale plant, for the treatment of poultry slaughterhouse wastewater (PSW). The system was comprised of an eco-flush dosed bio-physico pre-treatment unit for fats, oil, and grease (FOG) hydrolysis prior to the PSW being fed to a down-flow expanded granular bed reactor (DEGBR), coupled to a membrane bioreactor (DEGBR-MBR). The system’s configuration strategy was developed to achieve optimal PSW treatment by introducing the enzymatic pre-treatment unit for the lipid-rich influent (PSW) in order to treat FOG including odour causing constituents such as H2S known to sour anaerobic digestion (AD) such that the PSW pollutant load is alleviated prior to AD treatment. This was conducted to aid the reduction in clogging and sludge washout in the DEGBR-MBR systems and to achieve the optimum reactor and membrane system performance. A performance for the treatment of PSW after lipid reduction was conducted through a qualitative analysis by assessing the pre- and post-pre-treatment units’ chemical oxygen demand (COD), total suspended solids (TSS), and FOG concentrations across all other units and, in particular, the membrane units. Furthermore, a similar set-up and operating conditions in a comparative study was also performed. The pre-treatment unit’s biodelipidation abilities were characterised by a mean FOG removal of 80% and the TSS and COD removal reached 38 and 56%, respectively. The final acquired removal results on the DEGBR, at an OLR of ~18–45 g COD/L.d, was 87, 93, and 90% for COD, TSS, and FOG, respectively. The total removal efficiency across the pre-treatment-DEGBR-MBR units was 99% for COD, TSS, and FOG. Even at a high OLR, the pre-treatment-DEGBR-MBR train seemed a robust treatment strategy and achieved the effluent quality set requirements for effluent discharge in most countries.
10
Galinha, C. F., G. Carvalho, C. A. M. Portugal, et al. "Real-time monitoring of membrane bioreactors with 2D-fluorescence data and statistically based models." Water Science and Technology 63, no. 7 (2011): 1381–88. http://dx.doi.org/10.2166/wst.2011.195.
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The application of membrane bioreactors (MBR) for wastewater treatment is growing worldwide due to their compactness and high effluent quality. However, membrane fouling, mostly associated to biological products, can reduce MBR performance. Therefore, it is important to monitor MBRs as close to real-time as possible to accelerate control actions for maximal biological and membrane performance. 2D-fluorescence spectroscopy is a promising on-line tool to simultaneously monitor wastewater treatment efficiency and the formation of potential biological fouling agents. In this study, 2D-fluorescence data obtained from the wastewater and the permeate of a MBR was successfully modelled using projection to latent structures (PLS) to monitor variations in the influent and effluent total chemical oxygen demand (COD). Analysis of the results also indicated that humic acids and proteins highly contributed to the measured COD in both streams. Nevertheless, this approach was not valid for other performance parameters of the MBR system (such as influent and effluent ammonia and phosphorus), which is usually characterised through a high number of analytical and operating parameters. Principal component analysis (PCA) was thus used to find possible correlations between these parameters, in an attempt to reduce the analytical effort required for full MBR characterisation and to reduce the time frame necessary to obtain monitoring results. The 3 first principal components, capturing 57% of the variance, indicated and confirmed expected relationships between the assessed parameters. However, this approach alone could not provide robust enough correlations to enable the elimination of parameters for process description (PCA loadings ≤ 0.5). Nevertheless, it is possible that the information captured by 2D-fluorescence spectroscopy could replace some of the analytical and operating parameters, since this technique was able to successfully describe influent and effluent total COD. It is thus proposed that combined modelling of 2D-fluorescence data and selected performance/operating parameters should be further explored for efficient MBR monitoring aiming at rapid process control.