ultrafiltration membrane treatment Articles

  • Ultrafiltration Ceramic Membrane Element

    JIUWU company produces the ceramic ultrafiltration membranes with the pore size 20nm, 50nm and so on. JIUWU company offers a large choice of ceramic membranes with different geometries and cut-offs to meet your process requirements in viscosity, molecule size, impurity profile, purity and yield target, etc. as ...


    By Jiangsu Jiuwu Hi-tech Co

  • Immersed Ultrafiltration Membranes for Treatment of Organically Laden Surfice Water

    ABSTRACT Ultrafiltration membranes are becoming increasingly prevalent in potable water treatment applications. This trend can be attributed to the improved cost effectiveness of membrane systems as compared to conventional treatment technologies and to progressively more stringent water quality regulations. In particular, increased awareness related to the formation of disinfection ...

  • Bench-scale study of ultrafiltration membranes for evaluating membrane performance in surface water treatment

    Currently, there is no standard bench-scale dead-end ultrafiltration (UF) testing system. The aim of the present study was to design and build a bench-scale hollow fiber UF system to assess the impact of operational parameters on membrane performance and fouling. A bench-scale hollow fiber UF system was built to operate at a constant flux (±2% of the set-point flux) and included automated ...


    By IWA Publishing

  • Ideal treatment of laundry wastewater with ultrafiltration installations

    Treatment of very dirty work clothing also produces heavily polluted, oily/greasy wastewater. It is the aim of laundry wastewater treatment to reduce fresh water consumption and to minimise the volume of residuals. At the same time, adherence to the limit values according to appendix 55 of the General provisions on hydrocarbon, heavy metal and AOX contamination in wastewater must be guaranteed. ...


    By EnviroChemie GmbH

  • Factors affecting coagulation as a pretreatment to ultrafiltration membranes

    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 chloride (PACl) products of different basicities ...


    By IWA Publishing

  • What Are the Best Companies for Microfiltration and Ultrafiltration Membrane Systems?

    Whether you are looking for a microfiltration or ultrafiltration (MF/UF) membrane system that will help your facility manufacture safe food and/or beverages, boiler feed water for industrial process, or treat contaminated waste to acceptable effluent standards, it can be overwhelming to search for the MF/UF membrane system that is ideal for your specific application. MF/UF membrane systems solve ...


    By SAMCO Technologies, Inc.

  • Treatment of dairy wastewater by two-stage membrane operation with ultrafiltration and nanofiltration

    Treatment of dairy wastewater by a two-stage membrane process with ultrafiltration (UF) and nanofiltration (NF) was investigated. The results showed that the flux of UF was higher at pH = 4.6 than that at pH = 8 because the resistance of the fouling membrane was lower at the isoelectric point of protein (pH = 4.6) in UF operation. Protein rejection exceeded 99% by UF + NF operation. Lactose ...


    By IWA Publishing

  • Fouling analysis of polysulfone ultrafiltration membranes used for drinking water treatment

    Natural organic matter (NOM) plays a significant role in the fouling of ultrafiltration membranes in drinking water treatment processes. For a better understanding of the interaction between fractional components of NOM and polysulfone (PS) ultrafiltration membranes used for drinking water treatment, fouling and especially the physically irreversible fouling of natural organic matter were ...


    By IWA Publishing

  • UF Membrane Technology

    UF Membrane Technology Ultrafiltration (UF) is a variety of membrane filtration in which forces, such as pressure or concentration gradients, cause separation through the semi-permeable membrane. High molecular weight suspended solids and solutes remain in the so-called retentate while water and low molecular weight solutes pass through the membrane in the permeate (filtrate). The pore size of ...


    By Jiangsu Jiuwu Hi-tech Co

  • Ultrafiltration and Reverse Osmosis for Landfill Leachate Treatment

    Lanchester Landfill serves Eastern Lancaster County and Western Chester County in PA for disposal of household and construction waste. The facility produces around 10,000 gals per day of leachate. The Problem The facility ran a single basin sequential batch reactor (SBR) and a filter press to dewater the solids for many years, but found that they first, could not sustain a ...


    By Dynatec Systems Inc.

  • Pilot scale evaluation of biofiltration as an innovative pre-treatment for ultrafiltration membranes for drinking water treatment

    Fouling remains one of the major constraints on the use of low pressure membranes in drinking water treatment. Work over the last few years has shown the importance of biopolymers (carbohydrates and protein-like material) as foulants for ultrafiltration (UF) membranes. The purpose of this study was to investigate at pilot scale the use of rapid biofiltration (without prior coagulation or ozone ...


    By IWA Publishing

  • Predictability of fouling-potential of raw water for ultrafiltration membranes

    The public drinking water supply of southern Germany is characterized by a rather decentralized network. Due to the hydrogeological setting in these parts of Germany many of the small water works with an average capacity of 50 m3/h have to treat raw water extracted from karstic or cliffy aquifers. These raw waters tend to be contaminated with particles and pathogens acquired during snowmelt or ...


    By IWA Publishing

  • Membrane fouling remediation in ultrafiltration of latex contaminated wastewater

    The current study aimed to remediate membrane fouling by latex effluent by altering membrane surface charge or ionic strength of the effluent. Hydrophilic polysulfone and Ultrafilic flat membranes, with molecular weight cutoff (MWCO) of 60,000 and 100,000, respectively, and hydrophobic polyvinylidene difluoride membrane (PVDF; MWCO 100,000) were used under a constant flow rate and in ...


    By IWA Publishing

  • Effect of enhanced coagulation by KMnO4 on the fouling of ultrafiltration membranes

    Pre-coagulation enhanced by KMnO4 before ultrafiltration (KCUF) was compared with normal pre-coagulation by alum (CUF) in the ultrafiltration of water from the Songhua River, China. The trans-membrane pressure (TMP) with KCUF was much lower than that when alum alone was used. With KCUF a slower increment of TMP occurred, even under conditions of high river water turbidity. The results also showed ...


    By IWA Publishing

  • Effect of membrane characteristics on the performance of membrane bioreactors for oily wastewater treatment

    Influence of membrane material and pore size on the performance of a submerged membrane bioreactor (sMBR) for oily wastewater treatment was investigated. The sMBR had a working volume of about 19 L with flat sheet modules at the same hydrodynamic conditions. Five types of micro- and ultra-polymeric membranes containing cellulose acetate (CA), cellulose nitrate (CN), polyamide (PA), polyvinylidene ...


    By IWA Publishing

  • Oily wastewater treatment by ultrafiltration using Taguchi experimental design

    In this research, results of an experimental investigation on separation of oil from a real oily wastewater using an ultrafiltration (UF) polymeric membrane are presented. In order to enhance the performance of UF in API separator effluent treatment and to get more permeation flux (PF), effects of operating factors on the yield of PF were studied. Five factors at four levels were investigated: ...


    By IWA Publishing

  • Organic Membrane

    Ceramic membrane technology and organic membrane technology can be used in combination. Organic membrane can follow ceramic membrane. We have organic membranes with wide range of pore sizes to different applications, from removing salt to filtering large particulates. JIUWU company can help you design the suitable membrane process. ...


    By Jiangsu Jiuwu Hi-tech Co

  • Direct pre-treatment of surface water through submerged hollow fibre ultrafiltration membranes

    The most distinctive characteristic of the Mediterranean climate is its strong seasonality, dry summers and intense rainfall episodes concentrated in spring and autumn. This changeability is translated into a wide variability of the water resources in terms of quantity and quality. Barcelona, located in the northeast extreme of the Iberian Peninsula, shows all the characteristics of the ...


    By IWA Publishing

  • MIEX® Pretreatment to Micro & UltraFiltration

    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 facilities. In particular, data is provided from the ...


    By Orica Australia Pty Ltd

  • Biofilm formation and permeate quality improvement in Gravity Driven Membrane ultrafiltration

    The effects of biofilm development on ultrafiltration membranes with regard to permeate stability and permeation rates were investigated using Gravity Driven Membrane (GDM) filtration. The first part of the study aimed at evaluating the influence of the biofilm on permeate flux quality and quantity with regard to Assimilable Organic Carbon (AOC) degradation. In addition, two types of biological ...


    By IWA Publishing

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