desalination chemical Articles

  • Taking the pressure off desalination

    California-based PAX Pure hopes to offer a new solution to water scarcity with its groundbreaking water purification tool. Developed by Jay Harman and Tom Gielda, PAX Pure technology desalinates and demineralizes water without membranes, moving parts or chemicals. Instead, the technology simply mimics high-altitude conditions. The big challenge with conventional ...


    By Ensia

  • Sustainable desalination: environmental approaches

    Abstract The environmental issues of possible concern during construction and operation of desalination plants (mainly large-scale facilities) include impacts that are common to many coastal development projects (e.g. land use and aesthetic impacts), as well as specific impacts associated with the elements of the desalination system and auxiliary infrastructure. In the latter category ...


    By IDE Technologies

  • Desalination gets a graphene boost

    Original story at MIT News Jeffrey Grossman applies new materials research to making desalination cheaper and more efficient. With the intensifying drought in California, the state has accelerated the construction of desalination plants. Yet due to high construction and operating costs, as ...

  • The future for desalination in the UK

    Documento sin título In this feature article, Anthony Bennett, Technical Director at Clarity, reports on developments in the application ...


    By Clarity Authoring

  • Seawater desalination for methanex

    Methanex has a large methanol production facility in Punta Arenas, Chile. In this region of the world, fresh water is not available, and the facility requires seawater desalination to provide drinking water and process water. When the facility underwent renovation and expansion of their facilities, Aqua-Chem ICD provided a total of five (5) new Once through Multi-stage Flash plants. The ...

  • Desalination pre‐treatment with LFNano

    EconoPure Water Systems EconoPure Water Systems designs and manufactures highly economical, scalable, low‐fouling. membrane systems. The Company leverages the proprietary low‐fouling nanofiltration. (“LFNano”) system consisting of a unique membrane element that is designed to avoid. particulate fouling, biofouling, and scaling. As the name suggests, the LFNano ...

  • Sea water desalination for sagunto, Spain

    The Problem The Sagunto locality is situated in the region of the Camp of Morvedre in Spain. In recent years, a strong industrial growth has been anticipated in the zone. This has provoked a growing requirement for water in the Municipal Region of Sagunto. For this situation, the Sagunto Council planed to cover part of the future hydraulic deficit for short and long term with the ...

  • Carbon nanotube membrane for water desalination

    This is a review of carbon nanotube membranes with an emphasis on their water desalination applications. Particular attention is given to carbon nanotube preparation, types and properties. The concept of desalination in the context of carbon nanotubes is discussed. The different processes for the manufacture of carbon nanotube membranes are electric arc discharge, laser ablation and Chemical ...


    By Inderscience Publishers

  • Breakthrough in energy efficient desalination technology

    Saltworks' proof-tested process employs an innovative thermo-ionic energy conversion system. The energy reduction is achieved by harnessing low temperature heat and atmospheric dryness to overcome the desalination energy barrier. The system works best in the dry regions that need water. Saltworks President Joshua Zoshi said, 'a desalination technology powered by atmospheric dryness is very much ...


    By GLOBE Foundation

  • Innovative seawater intake for reverse osmosis desalination plants

    Seawater desalination plants typically consist of four major unit operations: seawater intake, pretreatment, Reverse Osmosis (RO) stage, and posttreatment and brine discharge. The best way is to go through vertical beach wells, but the increase of the production capacity of the plants built in recent years makes open intake the only solution. These open ocean intakes draw seawater through the ...


    By Inderscience Publishers

  • Thermocline-driven desalination: the technology and its potential

    Seawater desalination technology is emerging as freshwater requirements are alarmingly increasing all over the world. Conventional technologies such as reverse osmosis and multistage flash evaporation have their limitations, such as chemical treatment and scaling. Low-Temperature Thermal Desalination (LTTD) is an attractive technology with vast potential. It makes use of the ocean temperature ...


    By Inderscience Publishers

  • Mild desalination of various raw water streams

    For chemical industries, fresh water availability is a pre-requisite for sustainable operation. However, in many delta areas around the world, fresh water is scarce. Therefore, the E4Water project (www.e4water.eu) comprises a case study at the Dow site in Terneuzen, The Netherlands, which is designed to develop commercial applications for mild desalination of brackish ...


    By IWA Publishing

  • Process control in multi-stage flash desalination industry

    Process control is an essential part of the desalination industry that requires to be operated under optimum conditions to increase the lifetime of the plant and reduce the unit product cost. Improved process control is a cost-effective approach to energy conservation and increased process profitability. The Multi-Stage Flash (MSF) plant involves many complicated operations related to steam, ...


    By Inderscience Publishers

  • Bench-scale testing of SW desalination using NF

    A majority of Southern California municipalities, including the City of Long Beach, depend on water purchased from the Metropolitan Water District of Southern California. However, due to over-allocation of the Colorado River, this water supply could potentially be restricted in the future. Consequently, the Long Beach Water Department (LBWD) is considering the construction of a 10 million gallon ...


    By Toray Chemical Korea

  • Fouling and cleaning of seawater reverse osmosis membranes in Kalpakkam nuclear desalination plant

    A seawater reverse osmosis plant of 1800 m³/day capacity is part of the 6300 ³/day capacity nuclear desalination demonstration project at Kalpakkam. The plant was commissioned in October 2002 and is in continuous operation. This paper deals with types of foulants, membrane cleaning procedures and the improvement in the reverse osmosis system after cleaning. This paper also describes the analysis ...


    By Inderscience Publishers

  • Comparison of environmental impact and energy efficiency of desalination processes by LCA

    In this study two desalination technologies have been compared by means of LCA with the focus on energy supply with a variety of scenarios based on different assumptions. The studied technologies are reverse osmosis and the newly developed technology Memstill where electrical energy demand is reduced by using external thermal energy source and use of chemicals is reduced. The scenarios are chosen ...


    By IWA Publishing

  • Optimizing scale inhibition costs in reverse osmosis desalination plants

    Over the last few decades, advancements in technology and engineering design have allowed for the construction of reverse osmosis (RO) plants with increased production capacities that could operate at reasonable energy costs. Yet the portion of the operating cost related to consumable scale inhibition chemicals has not changed dramatically due to the disregard by the water treatment community for ...

  • Freezingmelting process and desalination: review of present status and future prospects

    The main factors affecting the use of freezing-melting (FM) process are the capital cost and the process complexity. The FM technology was successful when these two factors were compensated by other advantages. The success in food industry was mainly due to its ability of producing high-quality products compared to the available thermal technology in the market. In chemical industry it is ...


    By Inderscience Publishers

  • Design, operating and research experience at the Penneshaw Seawater Desalination Plant, South Australia

    Abstract This paper provides a historical perspective of the plant, including performance problems and how they were overcome, as well as key learnings from selected process R&D studies. The South Australian Water Corporation (SA Water) is a wholly-owned public water utility, responsible for the management of water and wastewater supply, treatment and distribution infrastructure, for ...


    By MASAR Technologies, Inc.

  • Electrochlorination system: a unique method of prevention of biofouling in seawater desalination

    Desalination plants require huge volumes of seawater for the generation of fresh water. Seawater contains large amounts of microbiological fluids which, when passed through the piping system, form biofouling in the inner surface of the pipeline, which results in the reduction of the flow rate of water without proper chemical treatment. Chlorine is the most commonly used disinfectant for water ...


    By Inderscience Publishers

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