membrane distillation system 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

  • 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

  • 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

  • Concentrating primary reverse osmosis concentrate by direct contact membrane distillation

    In the present work, a thermally driven membrane process-direct contact membrane distillation was investigated for concentrating the primary reverse osmosis concentrate to minimize the water loss. The primary reverse osmosis concentrate used in the work was obtained from the RO process of the direct drinking water preparation system designed for the 29th Olympic Games with 50% recovery. The feed ...


    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

  • Recovery of water and acid from leach solutions using direct contact membrane distillation

    This paper describes for the first time the use of direct contact membrane distillation (DCMD) for acid and water recovery from a real leach solution generated by a hydrometallurgical plant. The leach solutions considered contained H2SO4 or HCl. In all tests the temperature of the feed solution was kept at 60 °C. The test work showed that fluxes were within the range of ...


    By IWA Publishing

  • 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

  • Distillation Process Can Yield Zero Liquid Discharge System

    Many industrial applications produce liquid waste as a by-product of their process. As environmental regulations governing the disposal of industrial wastewater become more stringent, it's imperative that innovative wastewater treatment solutions are used to treat this waste and minimize the environmental impact of disposal. While numerous technologies exist to treat industrial wastewater, Zero ...


    By Samsco Corporation

  • Application of PTFE membrane for ammonia removal in a membrane contactor

    The feasibility of a membrane contactor system for ammonia removal was studied. The mass transfer coefficient was used to quantitatively compare the effect of various operation conditions on ammonia removal efficiency. Effective removal of ammonia was possible with a Polytetrafluoroethylene (PTFE) membrane contactor system at all tested conditions. Among the various operation parameters, contact ...


    By IWA Publishing

  • Crossflow Membrane Filtration High-Purity Water Systems

    INTRODUCTION As the electronics industry continues to provide us with such products as high resolution television, notebook size portable computers and cars with automatic navigation systems, it becomes necessary to produce semiconductors with finer device geometries to allow for efficient placement of more circuits per a given area. This requires increased control of a semiconductor's material ...

  • 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: ...


  • Treating Industrial Water with Membrane Technology

    A variety of industries are finding that it makes sense to reevaluate the way they treat industrial process water, both to improve the quality of their products and increase the efficiency of their processes. Purification systems utilizing crossflow membrane filtration, such as reverse osmosis (RO), nanofiltration (NF) or ultrafiltration (UF) can be a good alternative to traditional filtration ...


  • Crossflow Membrane Applications for Glycol-based aqueous solutions

    Introduction This document is a guide for water treatment engineers to better understand crossflow membrane applications for glycol-based aqueous solutions. It includes glycol applications we have sold equipment for, applications we have successfully tested, and applications we have not tested but are expected to be technically feasible. Glycol-based solutions are commonly used by a ...


  • 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

  • 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 ...

  • Nanofiltration: properties and uses

    Untitled Document Koch Membrane Systems' Henia and Jorge Yacubowicz outline the uses and benefits of nanofiltration. ...

  • TTHMs and Bacteriological Water Quality in Desalinated Seawater: Experience and On-going Research in the US Virgin Islands

    Islands and coastal regions throughout the world are turning increasingly to desalination of seawater for supply. For example, Tampa, FL has a plant just entering production and San Diego, CA and Texas others under consideration. While much of this desalination relies on membrane processes, sites where electrical power is steam-generated are uniquely suited to distillation processes. The US ...

  • Hybrid RO MSF: a practical option for nuclear desalination

    Hybrid RO MSF desalination combines the advantages of the high desalting performance of distillation processes and lower energy requirement of membrane processes. It allows a better match between power and water requirements and enables better utilisation of the power generated from MSF into the RO. Hybrid RO MSF can lead to an optimised feedwater temperature of the RO plant since is possible to ...


    By Inderscience Publishers

  • Methods of Purification

    Water Innovations Water Systems Carbon Filtration is used for several reasons. Its primary purpose is the reduction of chlorine to less than 0.1 ppm. Chorine can damage softener resins, reverse osmosis membranes, and mixed bed deionization resins. Activated carbon will also help control tastes and odors, provide organic and hazardous organic chemical ...


    By Water Innovations, Inc

  • Loading of an Anaerobic Packed Bed for Treatment of a High Strength Gray Water

    ABSTRACTIn preparation of long-duration manned space flight, biological treatment systems have been evaluated for mission specific waste streams consisting of a high-strength gray water. The purpose of the work was to determine the appropriateness of using nitrification and denitrification to treat the urine-humidity condensate waste stream and to determine the optimal loading rate for the bench ...

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