membrane distillation water treatment Articles

  • Membrane Distillation and Applications for Water

    SummaryWater treatment is an important auxiliary process in all thermal cogeneration plants. In this context membrane distillation (MD) is a novel technology that is potentially advantageous to technologies like reverse osmosis in the following ways: ability to utilize low-grade heat, reduced sensitivity to fluctuations in pH or salt concentrations, and lower capital and O&M costs. This ...


    By Xzero AB

  • Brackish water treatment for reuse using vacuum membrane distillation process

    The availability of fresh water is vital for all human activities and in particular for improving living conditions, health and overall well-being. Pressure on scarce fresh water resources can be reduced by treating and reusing brackish water by advanced membrane treatment technologies. In this study, brackish water originating from effluent discharge of a local coal mine, seawater, groundwater ...


    By IWA Publishing

  • Energy evaluation and treatment efficiency of vacuum membrane distillation for brackish water desalination

    Strict environmental regulations have led to the rapid development of membrane separation technologies for the production of potable water, for industrial water supply, and for the reuse and discharge of treated wastewater. Promotion of water recycling and the provision of potable water from brackish water prevent significant negative effects on the environment and drinking water supplies. This ...


    By IWA Publishing

  • Thermodynamic modelling of a membrane distillation crystallisation process for the treatment of mining wastewater

    Membrane distillation (MD) could be applicable in zero liquid discharge applications. This is due to the fact that MD is applicable at high salinity ranges which are generally outside the scope of reverse osmosis (RO) applications, although this requires proper management of precipitating salts to avoid membrane fouling. One way of managing these salts is with MD crystallisation (MDC). This ...


    By IWA Publishing

  • Recycling of coal seam gas-associated water using vacuum membrane distillation

    Coal seam gas-associated water (CSGAW), which is a by-product of coal seam gas (CSG) production typically contains significant amounts of salts and has potential environmental issues. In this study, we optimized a bench-scale vacuum membrane distillation (VMD) process with flat-sheet hydrophobic polytetrafluoroethylene (PTFE) membranes for the treatment of synthetic CSGAW (conductivity = 15 ...


    By IWA Publishing

  • Experimental study of multi-effect membrane distillation (MEMD) for treatment of water containing inorganic salts

    A novel multi-effect membrane distillation (MEMD) process has been implemented to treat water containing four different inorganic solutes. The 4-stage MEMD module was developed based on the air-gap configuration. The influence of operating parameters like concentration, feed temperature, flow rate and operating time on permeate fluxes of zinc sulfate, sodium fluoride, magnesium chloride and ...


    By IWA Publishing

  • Hg removal and the effects of coexisting metals in forward osmosis and membrane distillation

    In this study, we investigate the rejection of Hg, Cd, and Pb and the effect of coexisting metals on Hg removal through forward osmosis (FO) and membrane distillation (MD) in order to establish a more effective water treatment process. The results of our laboratory experiment indicate that more than 97% of the rejection for each metal is achieved through the FO system, and this rejection is ...


    By IWA Publishing

  • Possibility of nuclear desalination through various membrane distillation configurations: a comparative study

    Three membrane distillation processes, direct contact membrane distillation, sweeping gas membrane distillation and vacuum membrane distillation, have been experimentally studied in a shell-and-tube capillary membrane module. Preliminary experiments were conducted using distilled water and sodium chloride aqueous solutions as feed. The effects of the operating parameters - flow rate, temperature ...


    By Inderscience Publishers

  • Seawater desalination with solar-energy-integrated vacuum membrane distillation system

    This study designed and tested a novel type of solar-energy-integrated vacuum membrane distillation (VMD) system for seawater desalination under actual environmental conditions in Wuhan, China. The system consists of eight parts: a seawater tank, solar collector, solar cooker, inclined VMD evaporator, circulating water vacuum pump, heat exchanger, fresh water tank, and brine tank. Natural ...


    By IWA Publishing

  • Fouling and long-term durability of an integrated forward osmosis and membrane distillation system

    An integrated forward osmosis (FO) and membrane distillation (MD) system has great potential for sustainable wastewater reuse. However, the fouling and long-term durability of the system remains largely unknown. This study investigates the fouling behaviour and efficiency of cleaning procedures of FO and MD membranes used for treating domestic wastewater. Results showed that a significant ...


    By IWA Publishing

  • Recovery of salts from ion-exchange regeneration streams by a coupled nanofiltration–membrane distillation process

    Ion-exchange tap water demineralization for process water preparation results in a saline regeneration wastewater (20–100 mS cm−1) that is increasingly problematic in view of discharge. A coupled nanofiltration–membrane distillation (NF-MD) process is evaluated for the recovery of water and sodium chloride from this wastewater. NF-MD treatment of mixed regeneration ...


    By IWA Publishing

  • Direct contact membrane distillation for nuclear desalination, Part II: experiments with radioactive solutions

    This paper proposes the application of Direct Contact Membrane Distillation (DCMD) coupled with a nuclear reactor for water desalination and for low- and medium-level radioactive liquid waste concentration. Both laboratory and pilot plant experiments were carried out using the membranes reviewed in Part I of this paper. The effects of process parameters on the productivity and quality of DCMD ...


    By Inderscience Publishers

  • Water reclamation from shale gas drilling flow-back fluid using a novel forward osmosis–vacuum membrane distillation hybrid system

    This study examined the performance of a novel hybrid system of forward osmosis (FO) combined with vacuum membrane distillation (VMD) for reclaiming water from shale gas drilling flow-back fluid (SGDF). In the hybrid FO-VMD system, water permeated through the FO membrane into a draw solution reservoir, and the VMD process was used for draw solute recovery and clean water production. Using a SGDF ...


    By IWA Publishing

  • Picking Their Membranes - Part I -

    Membrane use by water suppliers may not be new, but suppliers are considering membranes in new ways -- by number and variety of applications. Membranes can work on a wider range of resource waters, more efficiently and for less cost than before. Among membranes' attractions as substitutes for conventional water-treatment technologies, such as filtration, distillation and ion-exchange are: ...


  • Membranes and theoretical modelling of liquid–gas membrane separation for aromatic compounds removal from water: a review

    Liquid–gas membrane separation techniques - namely, vacuum membrane distillation, membrane air–stripping/sweeping and pervaporation - are non–equilibrium membrane separation processes emerging for the removal of aromatic compounds from industrial wastewater and polluted ground waters. This review focuses on polymeric hydrophobic membranes which are commonly employed in the liquid–gas membrane ...


    By Inderscience Publishers

  • Case-study - Utilising waste heat for water production and climate control

    Water purification is needed to produce high quality water for consumption, agriculture and industrial needs. Conventional water treatment processes, like distillation and reverse osmosis, consume vast amounts of energy. However, there is a large potential for significant reductions in energy consumption and CO2 emissions in this sector. It can be achieved by the exploitation of waste heat for ...


    By Climate-KIC

  • Forward (Direct) Osmosis: A Novel and Prospective Process for Brine Control

    ABSTRACTThis paper reports the study of a novel process - Forward (Direct) Osmosis (FO) that potentially can be used for brine control. The driving force in the described FO process is provided by a draw solution comprising highly concentrated ammonium bicarbonate or fructose solution. Using a commercially available FO membrane, experiments conducted using a crossflow, flatsheet membrane cell ...

  • CSDU Granges, France case study

    Design & Build of a Landfill Leachate Treatment Plant The Client The landfill, opened in 1980 and managed by Veolia Propreté, receives about 110,000 tons/year of waste, producing 38 m3/day of leachate. The Challenge The client's main needs, which are typical of all companies operating in this sector, were the reduction in volume of the ...

  • Case study - CSDU Granges, France

    The Client The landfill, opened in 1980 and managed by Veolia Propreté, receives about 110,000 tons/year of waste, producing 38 m3/day of leachate. The Challenge The client's main needs, which are typical of all companies operating in this sector, were the reduction in volume of the leachate to be disposed of, ensuring that any streams produced ...


    By IDRAFLOT

  • Advanced Integrated ZLD Systems

    The Hybrid ZLD approach pairs the best of membrane and thermal technology to make ZLD affordable, yet robust and reliable. Over the past decade, the Hybrid ZLD systems i.e. integrated zero liquid discharge (ZLD) systems have emerged as die most effective ZLD approach for dealing with the most difficult to treat wastewaters in many industries including power, refining, and chemicals. The Hybrid ...

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