High Efficiency Operation of Pressurized Ultrafiltration for Seawater Desalination Based on Advanced Cleaning Research

Oriol, Guillem Gilabert; Hassan, Mufeed; Dewisme, Javier; Busch, Markus; Garcı́a-Molina, Verónica

doi:10.1021/ie402643z

Cited by 11 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To recover the membrane permeability, a CEB with a solution of 350 mg L -1 of sodium hypochlorite, concentration usually applied in desalination plant (Gilabert Oriol et al, 2013), was performed after the 10 th cycle. In the presence of SKC, the efficacy of the chemical cleaning was limited since only 67% and 50% of the initial permeability was recovered for the EP and DP, respectively.…”

Section: Fouling Properties As a Function Of The Algal Growth Phasementioning

confidence: 99%

Investigation of severe UF membrane fouling induced by three marine algal species

et al. 2016

Self Cite

View full text Add to dashboard Cite

Reducing membrane fouling caused by seawater algal bloom is a challenge for regions of the world where most of their freshwater is produced by seawater desalination. This study aims to compare ultrafiltration (UF) fouling potential of three ubiquitous marine algal species cultures (i.e., Skeletonema costatum-SKC, Tetraselmis sp.-TET, and Hymenomonas sp.-HYM) sampled at different phases of growth. Results showed that flux reduction and irreversible fouling were more severe during the decline phase as compared to the exponential phase, for all species. SKC and TET were responsible for substantial irreversible fouling but their impact was significantly lower than HYM. The development of a transparent gel layer surrounding the cell during the HYM growth and accumulating in water is certainly responsible for the more severe observed fouling. Chemical backwash with a standard chlorine solution did not recover any membrane permeability. For TET and HYM, the Hydraulically Irreversible Fouling Index (HIFI) was correlated to their biopolymer content but this correlation is specific for each species. Solution pre-filtration through a 1.2 μm membrane proved that cells and particulate algal organic matter (p-AOM) considerably contribute to fouling, especially for HYM for which the HIFI was reduced by a factor of 82.3.

show abstract

Section: Fouling Properties As a Function Of The Algal Growth Phasementioning

confidence: 99%

Investigation of severe UF membrane fouling induced by three marine algal species

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…Eventually, the flux cannot be recovered by mere hydraulic cleaning. At that point, harsh chemical cleaning is required. − Common cleaning chemicals include HCl, NaOH, sodium hypochlorite (NaOCl), and ethylenediamine tetraacetic acid (EDTA), and although these chemicals can mitigate some fouling impacts, this mitigation comes at a cost. For AnMBR treatment of municipal wastewater, some claim that cleaning comprises 2–7% of OPEX .…”

Section: Fouling Impacts On Operationmentioning

confidence: 99%

Assessing Advances in Anti-fouling Membranes to Improve Process Economics and Sustainability of Water Treatment

et al. 2022

View full text Add to dashboard Cite

Membrane fouling in desalination and wastewater treatment increases operating costs and energy consumption. Accordingly, research efforts have focused on developing new membrane materials and surface treatments that can resist fouling. Due to the case-specific nature of fouling, there is limited quantification of the impacts these novel anti-fouling membranes can have on water treatment systems. To address this gap, we report results of high-level analyses that evaluated savings in cost, energy consumption, and life-cycle greenhouse gas emissions when membranes with improved fouling resistance are used in brackish water desalination with reverse osmosis and wastewater treatment with anaerobic membrane bioreactors. To carry out these analyses, we used models Water-TAP 3 and GPS-X for desalination and wastewater treatment, respectively. We considered the influence of the membrane replacement rate and clean-in-place frequency in both scenarios. In the case of desalination, we also considered the influence of fouling factor and antiscalant dosage. In both scenarios, we determined that increasing membrane lifetime was the most influential factor in reducing operating expenses. Less influential factors included energy associated with increased pumping pressure to maintain a constant flux in the face of fouling and the frequency of clean-in-place events. Overall, desalination energy consumption was insensitive to the parameters we evaluated. Reducing energy associated with sparging in anaerobic membrane bioreactors offered the best opportunity to reduce AnMBR energy consumption in the wastewater treatment plant configuration we modeled. Greenhouse gas emissions were largely unaffected by the adoption of fouling-resistant membranes. Membranes made with new anti-fouling materials could be more expensive than current membranes. For the case studies we evaluate, depending on key variables such as membrane lifetime, the cost of desalination membranes could increase by 1.2−2.9 times, and the cost of anaerobic membrane bioreactor membranes could increase by up to 43% without operating costs increasing above our calculated baseline. This analysis highlights the promise of fouling-resistant membrane materials to reduce costs and energy consumption in water treatment systems. It also underscores a significant need for improved empirical data and multi-scale modeling to improve estimates of these savings.

show abstract

Pretreatment

Ludwig¹

2022

Reverse Osmosis Seawater Desalination Volume 2

View full text Add to dashboard Cite

High Efficiency Operation of Pressurized Ultrafiltration for Seawater Desalination Based on Advanced Cleaning Research

Cited by 11 publications

References 7 publications

Investigation of severe UF membrane fouling induced by three marine algal species

Investigation of severe UF membrane fouling induced by three marine algal species

Assessing Advances in Anti-fouling Membranes to Improve Process Economics and Sustainability of Water Treatment

Pretreatment

Contact Info

Product

Resources

About