Performance of nanofiltration and reverse osmosis after membrane bioreactor for urban source-separated urine treatment and water reuse

2017 ◽  
Vol 95 ◽  
pp. 18-33 ◽  
Author(s):  
Mathias Monnot ◽  
Bénédicte Nguyen ◽  
François Zaviska ◽  
Geoffroy Lesage ◽  
Marc Héran
Keyword(s):  
Reverse Osmosis ◽  
Water Reuse ◽  
Membrane Bioreactor ◽  
Urine Treatment

scholarly journals Recycling of Reverse Osmosis Concentrates to the Membrane Bioreactor in the MBR-RO Process for Water Reuse: effect on mbr performances

2017 ◽  
Vol 30 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Thi Thu Nga Vu ◽  
Manon Montaner ◽  
Christelle Guigui
Keyword(s):  
Organic Matter ◽  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Water Reuse ◽  
High Performance ◽  
Membrane Bioreactor ◽  
Membrane System ◽  
Size Exclusion ◽  
Ro Concentrate ◽  
The Impact

Wastewater effluents can be treated by an integrated membrane system combining membrane bioreactor (MBR) and reverse osmosis (RO) for effective removal of micropollutants in the field of high-quality water reuse. However, discharging the RO concentrate waste stream directly into the natural environment could lead to serious problems due to the toxic components contained in the concentrates (micropollutants, salts, organic matter). A possible solution could be the recirculation of RO concentrate waste to the MBR. However, such an operation should be studied in detail since the recirculation of non-biodegradable organic matter or high concentrations of salts and micropollutants could directly or indirectly contribute to MBR membrane fouling and modification of the biodegradation activity. In this context, the work reported here focused on the recirculation of such concentrates in an MBR, paying specific attention to MBR membrane fouling. Lab-scale experiments were performed on a continuous MBR-RO treatment line with RO concentrate recirculation. The main goal was to determine the recovery of the RO unit and of the global process that maintained good process performance in terms of biodegradation and MBR fouling. The results demonstrate that the impact of the toxic flow on activated sludge depends on the recovery of the RO step but the same trends were observed regardless of the organic matter and salt contents of the concentrates: the concentration of proteins increased slightly. Size-exclusion high performance liquid chromatography (HPLC-SEC) was employed to study the effects of RO concentrate on the production of protein-like soluble microbial products (SMPs) and demonstrated a significant peak of protein-like substances corresponding to 10-100 kDa and 100-1 000 kDa molecules in the supernatant. Thus a significant increase in the propensity for sludge fouling was observed, which could be attributed to the increased quantity of protein-like substances. Finally, the effect of the concentrate on sludge activity was studied and no significant effect was observed on biodegradation, indicating that the return of the concentrate to the MBR could be a good alternative.

An Experimental Study on the Treatment of Corn Processing Wastewater by Membrane Bioreactor

2012 ◽  
Vol 518-523 ◽  
pp. 2986-2990
Author(s):  
Jian Peng Pan ◽  
Min Sheng Huang ◽  
Yan He
Keyword(s):  
Experimental Study ◽  
Reverse Osmosis ◽  
Removal Efficiency ◽  
Water Reuse ◽  
Membrane Bioreactor ◽  
Single Stage ◽  
Corn Processing ◽  
Removal Efficiencies

The treatment of corn processing wastewater by membrane bioreactor was studied in this paper. The results showed that CODCr and NH3-N were eliminated efficiently by single-stage aeration MBR. The average concentrations of CODCr and NH3-N in the effluent were 53.1 and 1.29 mg/L, and the removal efficiency were 92.9% and 93.0Subscript text% respectively. But the removal efficiencies of TN and TP were limited, as 46.7% of TN and 41.6% of TP were removed. The subsequent processes (coagulation,reverse osmosis,etc.) may be needed to achieve the goal of water reuse.

scholarly journals Enabling Water Reuse by Treatment of Reverse Osmosis Concentrate: The Promise of Constructed Wetlands

2021 ◽  
Author(s):  
Rachel C. Scholes ◽  
Angela N. Stiegler ◽  
Cayla M. Anderson ◽  
David L. Sedlak
Keyword(s):  
Reverse Osmosis ◽  
Constructed Wetlands ◽  
Water Reuse

Membrane bioreactor for water reuse

Desalination ◽  
2007 ◽  
Vol 203 (1-3) ◽  
pp. 15-19 ◽  
Author(s):  
Christelle Wisniewski
Keyword(s):  
Water Reuse ◽  
Membrane Bioreactor

Reclaiming Municipal and Industrial Wastewater Using Combined Membrane Bioreactor and Reverse Osmosis

2009 ◽  
Vol 3 (1) ◽  
pp. 1-15
Author(s):  
Glen T. Daigger ◽  
Andrew Hodgkinson ◽  
David Evans
Keyword(s):  
Reverse Osmosis ◽  
Industrial Wastewater ◽  
Membrane Bioreactor

Hydrogen-driven denitrification of wastewater in an anaerobic submerged membrane bioreactor: potential for water reuse

2006 ◽  
Vol 54 (11-12) ◽  
pp. 207-214 ◽  
Author(s):  
B. Rezania ◽  
J.A. Oleszkiewicz ◽  
N. Cicek
Keyword(s):  
Organic Carbon ◽  
Water Reuse ◽  
Biological Treatment ◽  
Membrane Bioreactor ◽  
Hydrogen Transfer ◽  
Produced Water ◽  
Treatment Unit ◽  
Submerged Membrane Bioreactor ◽  
Delivery Unit ◽  
Final Effluent

An anaerobic submerged membrane bioreactor was coupled with a novel hydrogen delivery system for hydrogenotrophic denitrification of municipal final effluent containing nitrate. The biological treatment unit and hydrogen delivery unit were proven successful in removing nitrate and delivering hydrogen, respectively. Complete hydrogen transfer resulted in reducing nitrate below detectable levels at a loading of 0.14 kg N m−3 d−1. The produced water met all drinking water guidelines except for color and organic carbon. However, the organic carbon was removed by 72% mostly by membrane rejection. To reduce the organic carbon and color of the effluent, post treatment of the produced water is required.

Preliminary study on novel backwash cleaning for reverse osmosis fouling control in water reuse

2010 ◽  
Vol 10 (3) ◽  
pp. 296-301
Author(s):  
Jian-Jun Qin ◽  
Maung Htun Oo ◽  
Kiran A. Kekre
Keyword(s):  
Product Quality ◽  
Reverse Osmosis ◽  
Water Reuse ◽  
High Salinity ◽  
Full Scale ◽  
Elapse Time ◽  
Secondary Effluent ◽  
Fouling Control ◽  
Membrane Flux ◽  
Preliminary Study

We have demonstrated a novel backwash cleaning technique of direct osmosis (DO)-high salinity (HS) for reverse osmosis (RO) fouling control in water reuse. An UF-RO pilot system was continuously (24-h) operated on site with the secondary effluent as the feed over 4 months. The RO plant was run at 75% recovery and at the membrane flux of 17 l m−2 h−1 (LMH) to simulate the full scale NEWater production when DO-HS treatment was conducted once per day and five times per week during the last two months. Permeability of RO membranes as a function of elapse time of the pilot operation was monitored and compared over different durations. Impact of DO-HS treatment on RO product quality in terms of TOC and conductivity was investigated. It was concluded that the DO-HS treatment preliminarily demonstrated a benefit to low RO fouling rate by 2.5–4 times in 30–60 days without interruption on RO operation and impact on RO product quality.

scholarly journals Can osmotic membrane bioreactor be a realistic solution for water reuse?

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Gaetan Blandin ◽  
Pierre Le-Clech ◽  
Emile Cornelissen ◽  
Arne R. D. Verliefde ◽  
Joaquim Comas ◽  
...  
Keyword(s):  
Water Reuse ◽  
Membrane Bioreactor ◽  
Osmotic Membrane Bioreactor
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