Effect of Pharmaceuticals on the Performance of a Novel Osmotic Membrane Bioreactor (OMBR)

Lay, Winson C.L.; Zhang, Qiaoyun; Zhang, Jinsong; McDougald, Diane; Tang, Chuyang Y.; Wang, Rong; Liu, Yu; Fane, Anthony G.

doi:10.1080/01496395.2011.630249

Cited by 63 publications

(34 citation statements)

References 52 publications

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“…Osmotic dilution has demonstrated its robustness and effectiveness for treating low quality, impaired waters, such as digested sludge [9][10][11][12], sewage [13][14][15][16][17], and produced water from oil and gas exploration [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Osmotic dilution for sustainable greenwall irrigation by liquid fertilizer: Performance and implications

Xie

Zhang

Cooper

et al. 2015

Journal of Membrane Science

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A novel osmotic dilution process using commercial liquid fertilizer for greenwall irrigation was evaluated. In this process, clean water was extracted from raw sewage by forward osmosis (FO) using a well-balanced, allpurpose commercial liquid fertilizer as draw solution. The diluted liquid fertilizer can then be used for direct sustainable greenwall irrigation. Our results show that the presence of organic matter in the liquid fertilizer draw solution did not compromise FO membrane performance. No discernible changes in water flux and key membrane transport parameters (pure water permeability coefficient, A, and salt (NaCl) permeability coefficient, B) were observed when the organic matter concentration in the draw solution was increased to 2000. mg/L. Parameters influencing the osmotic dilution process were examined in terms of reverse salt flux, liquid fertilizer concentration, cross-flow rate, and feed and liquid fertilizer draw solution temperatures. The reverse flux of phosphate was much lower compared to those of ammonium and potassium as the reverse flux of these solutes were proportionally related to their hydrated radii. Cross-flow rate had no discernible impact on either water flux or reverse nutrient transport. Water and reverse nutrient fluxes increased markedly with increasing temperature, driven by higher water and solute diffusivities. More than 80% water recovery was achieved by osmotic dilution using raw sewage feed. Water production was stable and not affected by deposition of organic matter on the membrane surface. By contrast, reverse nutrient diffusion was hindered due to enhanced steric hindrance. Results reported here have significant environmental implications. Extracting clean water from raw sewage by commercial liquid fertilizers harnesses unique FO mass transfer phenomena and balances greenwall nutrient requirement, thereby sustaining the greenwall irrigation process. AbstractA novel osmotic dilution process using commercial liquid fertilizer for greenwall irrigation was evaluated. In this process, clean water was extracted from raw sewage by forward osmosis (FO) using a well-balanced, all-purpose commercial liquid fertilizer as a draw solution. The diluted liquid fertilizer can then be used for direct sustainable greenwall irrigation. Our results show that the presence of organic matter in the liquid fertilizer draw solution did not compromise FO membrane performance. No discernible changes in water flux and key membrane transport parameters (pure water permeability coefficient, A, and salt (NaCl) permeability coefficient B) were observed when the organic matter concentration in the draw solution was increased to 2,000 mg/L. Parameters influencing the osmotic dilution process were examined in terms of reverse salt flux, liquid fertilizer concentration, cross-flow rate, and feed and liquid fertilizer draw solution temperatures. The reverse flux of phosphate was much lower compared to those of ammonium and potassium as the reverse flux of these solutes were proportionally relat...

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Section: Introductionmentioning

confidence: 99%

Osmotic dilution for sustainable greenwall irrigation by liquid fertilizer: Performance and implications

Xie

Zhang

Cooper

et al. 2015

Journal of Membrane Science

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“…Although some researches have been carried out to minimize the reverse salt flux in FOMBR which are focused on the selection of DS [55,71,72] and development of FO membrane [71,73,74], studies for the effects of SRT on the salinity increase in bioreactor should be carried out more.…”

Section: Srt and Hrtmentioning

confidence: 99%

Recent developments in forward osmosis membrane bioreactors: a comprehensive review

Eyvaz

Aslan

Arslan

et al. 2016

Desalination and Water Treatment

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Forward osmosis or osmotic membrane bioreactor (FOMBR) has attracted great attention for wastewater treatment and reuse since conceptually introduced as a process. It has been proposed to reduce the high energy consumption in the conventional MBR, has lower membrane fouling propensity, and produce higher quality water. Moreover, RO process can be used after FOMBR to reconcentrate the diluted DS to be used for FO again. Besides significant advantages, when compared to conventional MBRs; lower water flux, concentration polarization, and salt accumulation because of high retention of FO in the bioreactor still remains as major drawbacks and challenges of FOMBR systems that need to be solved. In the last few years, many advances in development of FOMBR are stated to overcome the drawbacks of the system. The researches focused on manufacturing of high performance FO membranes and orientation, utilizing various different draw solutions providing required osmotic pressure and minimum reverse salt flux, and recently hybrid systems to alleviate the salt accumulation in bioreactor. However, the main critical challenges of FOMBR have not been completely resolved yet. This paper reviews the design and applications of FOMBR process in wastewater treatment. Particular focus was given to reverse salt flux and effects of the system performance; recent developments in FOMBR applications from beginning till today are reported.

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“…The FO membrane can effectively retain small organic contaminants in the bioreactor, thereby facilitating their subsequent biodegradation (Alturki et al, 2013;Coday et al, 2014). Indeed, recent studies have shown the excellent performance of OMBR for TrOC removal, particularly the compounds featured with a negative charge (Alturki et al, 2012;Lay et al, 2012;Holloway et al, 2014). Thus, OMBR can potentially produce high quality reclaimed water for potable reuse, irrigation, or direct discharge in environmentally sensitive areas.…”

Section: Introductionmentioning

confidence: 97%

The role of forward osmosis and microfiltration in an integrated osmotic-microfiltration membrane bioreactor system

et al. 2015

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. The role of forward osmosis and microfiltration in an integrated osmotic-microfiltration membrane bioreactor system. Chemosphere, 136 125-132.The role of forward osmosis and microfiltration in an integrated osmoticmicrofiltration membrane bioreactor system Abstract This study investigates the performance of an integrated osmotic and microfiltration membrane bioreactor (O/MF-MBR) system for wastewater treatment and reclamation. The O/MF-MBR system simultaneously used microfiltration (MF) and forward osmosis (FO) membranes to extract water from the mixed liquor of an aerobic bioreactor. The MF membrane facilitated the bleeding of dissolved inorganic salts and thus prevented the build-up of salinity in the bioreactor. As a result, sludge production and microbial activity were relatively stable over 60 days of operation. Compared to MF, the FO process produced a better permeate quality in terms of nutrients, total organic carbon, as well as hydrophilic and biologically persistent trace organic chemicals (TrOCs). The high rejection by the FO membrane also led to accumulation of hydrophilic and biologically persistent TrOCs in the bioreactor, consequently increasing their concentration in the MF permeate. On the other hand, hydrophobic and readily biodegradable TrOCs were minimally detected in both MF and FO permeates, with no clear difference in the removal efficiencies between two processes.

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Effect of Pharmaceuticals on the Performance of a Novel Osmotic Membrane Bioreactor (OMBR)

Cited by 63 publications

References 52 publications

Osmotic dilution for sustainable greenwall irrigation by liquid fertilizer: Performance and implications

Osmotic dilution for sustainable greenwall irrigation by liquid fertilizer: Performance and implications

Recent developments in forward osmosis membrane bioreactors: a comprehensive review

The role of forward osmosis and microfiltration in an integrated osmotic-microfiltration membrane bioreactor system

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