Membrane Treatment Articles

  • Tabas coal preparation plant wastewater treatment with membrane technology

    The goal of the present work is the Tabas coal preparation plant wastewater treatment using membrane technology. Polyacrylonitrile membrane was prepared through phase inversion method and then developed by annealing process. Also, high fouling resistance membranes were prepared by the embedding of TiO2 nanoparticles using self-assembling and blending methods. The effect of immersion time and ...


    By IWA Publishing

  • Treatment of cyanide wastewater by bulk liquid membrane using tricaprylamine as a carrier

    The transport of cyanide from wastewater through a bulk liquid membrane (BLM) containing tricaprylamine (TOA) as a carrier was studied. The effect of cyanide concentration in the feed solution, TOA concentration in the organic phase, the stirring speed, NaOH concentration in the stripping solution and temperature on cyanide transport was determined through BLM. Mass transfer of cyanide through ...


    By IWA Publishing

  • Optimized Membrane Treatment

    LONG LIVE THE MEMBRANE - Dave Johnson, Technical Manager - Water, explores the new technologies that address specific needs for membrane processes used in downstream facilities for water treatment purposes. Membrane processes are becoming popular in downstream processing plants for the production of boiler feed water, treatment and recycling of wastewater and integration into various processes. ...


    By Kurita

  • Extension of two large wastewater treatment plants in Stockholm using membrane technology

    Like many other large cities, Stockholm is facing increased urbanization with densification of infrastructure as a result. At the same time, implementation of the Baltic Sea Action Plan and the EU Water Framework Directive is expected to result in more stringent effluent quality demands. The current situation gives rise to new challenges for the municipal wastewater treatment plants (WWTPs). ...


    By IWA Publishing

  • Optimized Membrane Treatment Hydrocarbon Engineering

    Membrane processes are becoming popular in downstream processing plants for the production of boiler feed water, treatment and recycling of wastewater and integration into various processes. The design and efficiency, both hydraulically and in terms of energy, are improving rapidly Design changes such as heating feedwater through solar ponds can result in up to 35% reduction in energy ...


    By Kurita

  • Evaluation of novel hollow fibre membranes for NOM removal by advanced membrane autopsy

    A full-scale inside out hollow fibre membrane module was operated in a pilot-scale water treatment plant in Sweden for a period of 12 months from August 2013 to July 2014. Liquid chromatography– organic carbon detection (LC-OCD) chromatogram indicated the membranes could effectively remove 86% of dissolved organic carbon and 92% of humic substances from the feedwater. Routine cleaning-in-place ...


    By IWA Publishing

  • Key issues of ultrafiltration membrane water treatment plant scale-up from laboratory and pilot plant results

    Industrial-scale ultrafiltration (UF) membrane systems have gained wide acceptance for producing safe drinking water. Laboratory and pilot plant studies are often carried out prior to the design of full-scale water treatment plants. Emphases are laid on how accurately these laboratory and pilot plant studies represent actual industrial-scale systems and the limitations. A case study which ...


    By IWA Publishing

  • Membrane treatment of the bleaching plant (EPO) filtrate of a kraft pulp mill

    The objective of this study was to evaluate the use of membrane technology to treat oxygen and peroxide-reinforced extraction stage (EPO) filtrate from a kraft pulp mill bleach plant. Three different types of tubular membranes were tested in a pilot plant: (i) tight ultrafiltration (UF); (ii) open UF followed by nanofiltration (UF + NF); and (iii) nanofiltration (NF). According to the ...


    By IWA Publishing

  • Wastewater treatment and electricity generation by membrane less microbial fuel

    Membrane less microbial fuel cell (ML-MFC) is one of the attractive approaches for the simultaneous electricity generation and wastewater treatment. In this present paper, electricity generation by ML-MFC has been studied in continuous mode. Several experiments such as effect of aeration in cathode compartment, sludge concentration, initial substrate concentration and the COD removing capability ...


    By Inderscience Publishers

  • Fabrication of circular shaped ceramic membrane using mixed clays by uniaxial compaction method for the treatment of oily wastewater

    Circular shaped ceramic membrane was fabricated using inexpensive mixed clays by uniaxial compaction method and subsequently fired at 900°C. TGA analysis demonstrates that the minimum sintering temperature required to fabricate the membrane is above 800°C. A volume median diameter d(0.5) of the raw material mixture is found to be 2.78 µm. XRD analysis verifies that the membrane undergoes phase ...


    By Inderscience Publishers

  • Removal and fate of emerging contaminants combining biological, flocculation and membrane treatments

    An experimental study combining biological treatment with flocculation (F) and ultrafiltration (UF) membrane technology was conducted, separately and in combination, seeking to increase insight into the capability of such treatment processes to remove emerging contaminants (ECs). The occurrence and removal efficiencies of 17 ECs are reported for wastewater from Mexico City. ...


    By IWA Publishing

  • Membrane fouling

    The Problem: Membrane water treatment is costly and complex due to the systems required to mitigate membrane fouling. Membranes have, therefore, been relegated to high value applications such as desalination and ultra-pure water needs. The systems used to mitigate fouling have a history of underperformance and high cost. EconoPure Solution: EconoPure has ...


    By EconoPure Water Systems, LLC

  • Membrane Technology in Water Treatment in the Mediterranean Region

    Water is the most essential resource of life. About 97,5 % of the World’s water resources (1.386 Mio km³) are salty seawater, not usable for agriculture, technical purposes or simply quenching the thirst of about 6 Billion people on Earth. Just 2.5 % of the world’s water is fresh water, but only 30 % of it are accessible for us, either as groundwater or as surface water bodies. ...


    By IWA Publishing

  • The removal and degradation of pharmaceutical compounds during membrane bioreactor treatment

    Pharmaceutical compounds such as non-steroidal anti-inflammatory drugs (NSAIDs) and antibiotics have been detected in sewage treatment plant (STP) effluents, surface and ground water and even in drinking water all over the world, and therefore have developed as compounds of concern. Membrane bioreactor (MBR) treatment has gained significant popularity as an advanced wastewater treatment ...


    By IWA Publishing

  • Desalination membrane water treatment system for Lajes US Air Force

    GEA designed and provided a Desalination Membrane Water Treatment System for the US Air Force Lajes Field Water Treatment Plant, located in the Azores. The Membrane System capacity is 1.1 MGD (4.2 million m³/day) and consists of twenty (20) 8-inch diameter pressure vessels arranged with 14 pressure vessels in the first pass followed by six pressure vessels in the second pass. There are 120 ...


    By GEA ENGINEERING

  • Occurrence of N-nitrosodimethylamine precursors in wastewater treatment plant effluent and their fate during ultrafiltration-reverse osmosis membrane treatment

    The formation of N-nitrosodimethylamine (NDMA) is of major concern among wastewater recycling utilities practicing disinfection with chloramines. The NDMA formation potential (FP) test is a simple and straightforward method to evaluate NDMA precursor concentrations in waters. In this paper we show the NDMA FP results of a range of tertiary wastewater treatment plants that are also the source for ...


    By IWA Publishing

  • Simulation and optimization of an experimental membrane wastewater treatment plant using computational intelligence methods

    The optimization of relaxation and filtration times of submerged microfiltration flat modules in membrane bioreactors used for municipal wastewater treatment is essential for efficient plant operation. However, the optimization and control of such plants and their filtration processes is a challenging problem due to the underlying highly nonlinear and complex processes. This paper presents the ...


    By IWA Publishing

  • The fate of 14C-radiolabelled diclofenac and 4′-hydroxydiclofenac in membrane bioreactor treatment of wastewater

    This study aimed at enhancing knowledge on the fate of diclofenac (DF), together with its main human metabolite 4′-hydroxydiclofenac (4′OHDF), during wastewater treatment by using a laboratory-scale membrane bioreactor (MBR). The reactor was fed continuously with non-radiolabelled diclofenac for a one month period prior to a single pulse of a 14C-radiolabelled solution of DF and 4′OHDF. The ...


    By IWA Publishing

  • Membrane treatment of liquid wastes from radiological decontamination operations

    The paper focuses on the evaluation of membrane filtration for the treatment of liquid radioactive streams generated in area decontamination operations. In this work, semi-permeable membranes were demonstrated to be effective reducing the volume of wastewater containing cesium and cobalt by two orders of a magnitude. The efficiency of membrane separation was enhanced by employing additives that ...


    By IWA Publishing

  • Membrane process treatment for greywater recycling: investigations on direct tubular nanofiltration

    On-site greywater recycling and reuse is one of the main ways to reduce potable water requirement in urban areas. Direct membrane filtration is a promising technology to recycle greywater on-site. This study aimed at selecting a tubular nanofiltration (NF) membrane and its operating conditions in order to treat and reuse greywater in buildings. To do so, a synthetic greywater (SGW) was ...


    By IWA Publishing

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