Application of ceramic membranes with pre-ozonation for treatment of secondary wastewater effluent

Lehman, S. Geno; Liu, Li

doi:10.1016/j.watres.2009.02.003

Cited by 122 publications

(57 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, due to their stability against most chemicals (e.g., acid, alkaline and oxidation agents) [13], ceramic membranes have been employed in many water treatment applications where filtration, backwashing, or chemical cleaning is performed under extreme conditions (e.g., high temperature and high pressure) or using difficult waters (e.g., high and low pH, and aggressive solvents). As a result, almost all of the recent studies that applied ozonation prior to membrane filtration have used ceramic-based membranes [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Fouling control of a ceramic microfiltration membrane for direct sewer mining by backwashing with ozonated water

Fujioka

Nghiem

2015

Separation and Purification Technology

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Fouling control of a ceramic microfiltration membrane for direct sewer mining by backwashing with ozonated water

Fujioka

Nghiem

2015

Separation and Purification Technology

View full text Add to dashboard Cite

“…Microfilters have relatively higher fluxes compared to ultrafiltration, but the latter results in higher purification efficiency. To reduce fouling, highly hydrophilic membranes [25,31,32] can be used (in case oil in water emulsions), or membrane separation can be combined with other methods such as gas injection [33], ozonation [34,35] or destabilization [5,36]. In the recent study of M. Matos et al [5] destabilization/centrifugation/ultrafiltration hybrid process was applied with high efficiency (97.4%) to purify oil in water emulsion, using calcium chloride coagulant and ZrO 2 ceramic ultrafilter (300 kDa) membrane.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Purification of Finely Dispersed Oil Contaminated Waters by Coagulation/Flocculation Method and Effects on Membrane Filtration

Veréb¹,

Nagy²,

Kertész³

et al. 2017

Studia UBB Chemia

View full text Add to dashboard Cite

ABSTRACT. In the present study the purification of finely dispersed oil contaminated water (100 ppm crude oil; doil droplets<2 µm) was investigated by using coagulation/flocculation process, membrane separation and combined methods. As coagulant, polyaluminum chloride (Bopac) iron(III) chloride and aluminum(III) chloride, while as flocculant anionic polyelectrolyte were applied. For the membrane separation, hydrophilic polyethersulfone (PES) microfilter (d=0.2 μm) was used, while for the determination of the purification efficiencies turbidity, chemical oxygen demand and extractable oil content were measured. The utilization of Bopac polyaluminum chloride coagulant (by setting Al 3+ content to 20 ppm) resulted in high purification efficiency (96.7%). The extra addition of 1 ppm anionic polyelectrolyte lead to the increase in efficiency up to 98.8%. Due to the effective destabilization of oil in water emulsion the flux highly increased during the microfiltration of the emulsion, since both irreversible and reversible membrane resistances were greatly reduced.

show abstract

“…Previous experimental studies have indicated that treatment of domestic and oily wastewaters using MF does not meet the environmental standards. [4][5][6][7][8][9] During the past years, many researchers have investigated the ineffectiveness of MF in treating oily wastewaters for reuse of wastewater. According to Table I and other published literature, application of polymeric membranes presents an attractive approach in this field of study: Salahi and Mohammadi indicated that in the membrane permeate from an industrial wastewater oil and grease content (OGC) was reduced up to 99.7%, TSS reduced up to 100%, and chemical oxygen demand (COD) reduced up to 63%.…”

Section: Introductionmentioning

confidence: 99%

PES and PES/PAN Blend Ultrafiltration Hollow Fiber Membranes for Oily Wastewater Treatment: Preparation, Experimental Investigation, Fouling, and Modeling

et al. 2015

View full text Add to dashboard Cite

ABSTRACT:In this research, polyethersulfone (PES)/polyacrylonitrile (PAN) blend ultrafiltration hollow fiber membranes were prepared via phase inversion induced by a dry-jet wet spinning process. The membranes were characterized by water contact measurements, scanning electron microscopy analysis and permeability measurements, and fouling-resistance measurements. The results show that water contacts of the membranes are enhanced by increasing the PAN content in the spinning dope. The results of an experimental study on separation of oil from oily wastewaters are presented. The results demonstrated that the prepared PES membranes are effective in removing chemical oxygen demand (80.6%), total organic carbon (89.3%), turbidity (99.3%), total suspended solid (100%), and oil and grease content (99.7%), and final permeation flux of about 73.5 L/m 2 h. Also, it was found that 75/25 wt% of PES/PAN have higher mechanical strength and good separation performance. Hermia's models were used for prediction of the decline in permeation flux. Experimental data and models predictions were compared. The results showed that there is reasonable agreement between experimental data and the cake layer model followed by the intermediate blocking model. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2015; View this article online at wileyonlinelibrary.com.

show abstract

Application of ceramic membranes with pre-ozonation for treatment of secondary wastewater effluent

Cited by 122 publications

References 18 publications

Fouling control of a ceramic microfiltration membrane for direct sewer mining by backwashing with ozonated water

Fouling control of a ceramic microfiltration membrane for direct sewer mining by backwashing with ozonated water

Highly Efficient Purification of Finely Dispersed Oil Contaminated Waters by Coagulation/Flocculation Method and Effects on Membrane Filtration

PES and PES/PAN Blend Ultrafiltration Hollow Fiber Membranes for Oily Wastewater Treatment: Preparation, Experimental Investigation, Fouling, and Modeling

Contact Info

Product

Resources

About