ultrafiltration membranes Articles

260 Results found
  • Keyword: ultrafiltration membranes ×

Demonstrating ultra-filtration and reverse osmosis performance using size exclusion chromatography

by IWA Publishing  (Dec. 1, 2010)

Advanced water treatment plants employing ultrafiltration (UF) and reverse osmosis (RO) membrane processes are frequently implemented for the production of high-quality recycled water. It is important that process performance is able to be quantified and assessed to ensure it is fit for purpose. This research utilizes size exclusion chromatography ...

Membrane bioreactor application within the treatment of high-strength textile effluent

by IWA Publishing  (Feb. 1, 2012)

A pilot-scale dual-stage membrane bioreactor (dsMBR) incorporating two ultra-filtration (UF) side-stream membrane modules was designed, constructed, operated and evaluated on-site for treating high-strength textile effluent. The effluent stream was characterised by a COD range of between 45 to 2,820 mg/L and an average BOD of 192.5 mg/L. The dsMBR ...

MIEX® Pretreatment to Micro & UltraFiltration

by Orica Watercare  (Dec. 1, 2006)

There are currently (in 2006) four full-scale membrane plants in operation where the MIEX® Process pre-treats water prior to the membrane process. Two plants use Microfiltration (MF) and two use Ultrafiltration (UF). This technical note highlights the benefits of MIEX® Treatment prior to MF and UF based on operating data and experience at these ...

Intermittent operation of low pressure UF membranes for sewage reuse at household level

by IWA Publishing  (Aug. 29, 2013)

A household-scale wastewater treatment system was operated with domestic sewage. The system could recover gardening/irrigation water from raw sewage or secondary effluent by low pressure ultrafiltration (UF). The UF membranes (surface area = 3.5 m2, pore size = 0.04 μm) were operated at constant transmembrane pressure (0.13 ...

Factors affecting coagulation as a pretreatment to ultrafiltration membranes

by IWA Publishing  (Sep. 25, 2012)

Low pressure membranes can be effective in treating various types of water, but are subject to fouling. In this work, chemical coagulation was studied as a pretreatment to ultrafiltration (UF), with the goal of mitigating fouling while maintaining high permeate water quality. Alum and ferric chloride were evaluated, as well as two polyaluminum ...

Fouling mitigation in humic acid ultrafiltration using polysulfone/SAPO-34 mixed matrix membrane

by IWA Publishing  (May 9, 2013)

Although ultrafiltration (UF) membranes are applicable in wastewater and water treatment, most UF membranes are hydrophobic and susceptible to severe fouling by natural organic matter. In this work, polysulfone (PSf) membrane was blended with silicaluminophosphate (SAPO) nanoparticles, SAPO-34, to study the effect of SAPO-34 incorporation in ...

Ageing and Characterization of PES Ultrafiltration Membranes Exposed to Hypochlorite

by IWA Publishing  (Apr. 16, 2012)

Polyethersulfone (PES) ultrafiltration (UF) hollow fibers are widely used for drinking water production. During onsite operation, backwashing (brief, high occurrence, low concentration in free chlorine: 10 ppm to 20 ppm) and chemical washing (longer, less frequent, high concentration in free chlorine: 200 ppm to 400 ppm) are applied to PES fibers ...

Contribution of different effluent organic matter fractions to membrane fouling in ultrafiltration of treated domestic wastewater

by IWA Publishing  (Oct. 30, 2012)

In the present work, effluent organic matter (EfOM) in treated domestic wastewater was separated into hydrophobic neutrals, colloids, hydrophobic acids, transphilic acids and neutrals and hydrophilic compounds. Their contribution to dissolved organic carbon (DOC) was identified. Further characterization was conducted with respect to molecular ...

Preparation and antibacterial property of PES/AgNO3 three-bore hollow fiber ultrafiltration membranes

by IWA Publishing  (Apr. 4, 2013)

In this study, a three-bore polyethersulfone (PES) hollow fiber ultrafiltration (UF) membrane with antibacterial properties was prepared by phase inversion, using PES as the membrane material, N,N-dimethylacetamide (DMAC) as solvent, polyvinylpyrrolidone (PVP) and AgNO3 as additives. The silver particles were detected by X-ray photoelectron ...

Membrane filtration

by IWA Publishing  (Jun. 27, 2011)

Membrane is a thin layer of material that is capable of separating compounds as a function of physical and chemical properties when a driving force is applied across the membrane, which has been widely used in a wide range of applications in water industry [1]. Membrane can be classified by the range of compounds separated and the driving forces ...

Need help finding the right suppliers?

Let the XPRTs do the work for you