{"id":454,"date":"2020-10-26T12:20:05","date_gmt":"2020-10-26T12:20:05","guid":{"rendered":"http:\/\/amwerk.bold-themes.com\/berlin\/?page_id=454"},"modified":"2024-01-09T11:31:53","modified_gmt":"2024-01-09T11:31:53","slug":"technology","status":"publish","type":"page","link":"https:\/\/selmar.it\/en\/technology\/","title":{"rendered":"Technology"},"content":{"rendered":"

Company<\/span><\/span><\/div>

Precious resources<\/span><\/span><\/h3><\/header>
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<\/p>\n

The\u00a0water<\/strong>\u00a0is the predominant physical component of the surface of our planet, and it is an essential constituent of all animal and plant kingdom. Although theoretically unlimited in form and quality of sea water, this\u00a0resource<\/strong>\u00a0is actually very\u00a0scarce<\/strong>\u00a0and therefore\u00a0precious<\/strong>.<\/p>\n

For long time man had to strive to satisfy its need for water resources and to combat the drought affecting increasingly large areas of the Earth. Today he drastically faces pollution caused by industrialization, having postponed to the future – for too long – the emergency about the safeguard and renewability of the world’s resources,\u00a0firstly<\/em>\u00a0its water and energy sources.<\/p>\n

In most cases\u00a0water is available only in limited quantities<\/strong>\u00a0and with characteristics not always adapted to the civil, agricultural, commercial and industrial use. On the one hand, therefore, it is necessary to rationalize and\u00a0reduce consumptions<\/strong>, on the other hand it is essential\u00a0to increase the availability of water<\/strong>\u00a0using technologies and techniques that allow the exploitation of\u00a0alternative water resources<\/strong>, as well as\u00a0marine<\/strong>\u00a0and\u00a0brackish<\/strong>\u00a0water. Finally, it is also important to preserve the quality of those resources, ensuring that the wastewaters re-entered in the ecosystem are properly purified.<\/p>\n

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Company<\/span><\/span><\/div>

Reverse osmosis<\/span><\/span><\/h3><\/header>
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<\/p>\n

All our facilities operate under lean manufacturing and continuous improvement principles to increase efficiencies and reduce costs while maintaining the highest level of quality. Lean methods include improving workplace organization, reducing set-up times, streamlining process flows, continuous employee training, and more. Through lean, we\u2019ve streamlined processes to ensure our clients receive the best prices, products and services in the industry. The water treatment with the\u00a0reverse osmosis technology<\/strong>\u00a0represents an universal solution adaptable in all situations in which it is necessary to improve the quality of available water\u00a0on site<\/em>\u00a0to make it suitable to the expected uses.<\/p>\n

Selmar Technologies has embraced this technology since the early 80s<\/strong>: the continuous effort in research and development, design and production of equipment RO (Reverse Osmosis) constitute\u00a0an experience of great value<\/strong>, an absolute guarantee of competence and professionalism in a sector in which the ability to analyze – with maximum precision – the specific requirements is the key to success for achieving the best results in terms of efficiency, quality and energy saving.<\/p>\n

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\"https:\/\/selmar.it\/wp-content\/uploads\/2023\/07\/membrana_osmosi_it_nosfondo.png\"<\/span><\/div><\/div><\/div><\/div>
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  • A natural principle<\/span><\/li>
  • The operation of membrane<\/span><\/li><\/ul>
    \n\t\t\t
    <\/p>\n

    The\u00a0reverse osmosis<\/strong>\u00a0is a natural principle, according to which if two solutions with different salt concentrations are shared by a semi permeable membrane, water passes from the less concentrated solution to the most concentrated one.
    \nIf an\u00a0external pressure<\/strong>\u00a0is applied to the more concentrated solution, the process become reversed and it causes the\u00a0reverse osmosis<\/strong>\u00a0phenomenon (water passes from the more concentrated solution to the less concentrated one).<\/p>\n

    \n<\/div><\/div>\n\t\t<\/div>

    \n\t\t\t
    <\/p>\n

    The reverse osmosis process is the most efficient, steadiest and modern way to process seawater and brackish water.<\/strong>\u00a0Exploiting this phisycal-chemical natural process, it is possible to obtain fresh and drinkable water with low power consumption.
    \nThis process eliminates 100% of all polluting substances and over 80% of the organic ones: the result is a\u00a0water of absolute purity<\/strong>, with a low dry residue and a total absence of limescale and heavy metals, phosphates, nitrates and nitrites, without traces of pesticides and radioactive materials, disinfected by bacteria and viruses. A\u00a0mineral water<\/strong>, with the right concentration of mineral salts, useful to the human body.<\/p>\n

    The\u00a0reverse osmosis technology<\/strong>, thanks to its\u00a0scalability<\/strong>, it proves to be\u00a0efficient and convenient<\/strong> both when applied to satisfy relatively small and discontinuous needs, in the range of 500-1000 liters per day typical of the yachting world, and for the continuous cycle treatment of quantities sufficient to ensure the needs of entire communities, cruise ships, of entire industries: hundreds of cubic meters per day.<\/p>\n

    The application of this process is modular: from the smallest single membrane desalinators to treatment systems consisting of thousands of elements (in series or parallel), efficiency is growing, thanks to the continuous development of new materials and more sophisticated membranes.<\/p>\n

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    <\/div><\/div><\/div><\/div><\/div><\/div>
    <\/div><\/div><\/div><\/div><\/div><\/section>
    <\/div><\/div>
    Technology<\/span><\/span><\/div>

    The reverse osmosis desalinators<\/span><\/span><\/h3><\/header>
    <\/div>
    • Fresh water<\/span><\/li>
    • Separate the salts<\/span><\/li><\/ul>
      \n\t\t\t
      <\/p>\n

      The\u00a0reverse osmosis desalinators<\/strong>\u00a0are universally used in the marine and shipbuilding industry to obain fresh water from the seawater, and they are widely used for civil and residential use, for industrial and agricultural field, to purify sea water, brackish water or otherwise raw waters not directly usable for their characteristics.<\/p>\n

      Regardless of the size and capacity of the system, a RO desalinators (Reverse Osmosis) performs its function through\u00a0three basic stages<\/strong>:<\/p>\n

        \n
      • pre-filtering and \/ or chemical pretreatment of the raw water<\/li>\n
      • pressurization<\/li>\n
      • the flow through the reverse osmosis section and the separation of the salts<\/li>\n<\/ul>\n

        The incoming\u00a0pre-filtering<\/strong>\u00a0eliminates all suspended particles in the seawater and reduces its turbidity, by a passage through the filters which hold them physically. Generally plastic filters are used, you can use quartzite filters when you have to process a very turbid water.
        \nThis preventive process, providing a first improvement of water quality, also has the important function to prevent that the suspended particles, flowing directly to the reverse osmosis unit, can compromise quickly its efficiency and effectiveness.
        \nWhen necessary or desirable, it may be added to a section of\u00a0chemical pre-treatment<\/strong>.<\/p>\n

        The\u00a0HP pump (High Pressure)<\/strong>\u00a0imparts to the water the proper pressure required to entry in the reverse osmosis unit. This pump (or group of pumps in medium-large size systems) has features and benefits depending on the type of water to treat (sea water or brackish water) and the required production capacity.<\/p>\n

        \n<\/div><\/div>\n\t\t<\/div>

        \n\t\t\t
        <\/p>\n

        The\u00a0reverse osmosis unit<\/strong>\u00a0separates the salts still present in the water, generating a certain percentage of fresh water – the permeate – and discharging the remaining concentrate. The ratio between permeate and concentrate provides a measure of the efficiency of the entire process, which increases with the increase of the size of the plant. The RO unit can be composed of one or a few membranes in a single vessel (the container that houses them) in small household desalinators or for boating, up to thousands of vessel in onshore plants which guarantee drinking water to entire communities.<\/p>\n

        The fresh water obtained can be further treated, if necessary, with a\u00a0UV sterilization<\/strong>, that definitively breaks down the bacterial and pathogenic load; with a\u00a0post-filtration<\/strong>\u00a0active carbon, to improve the organoleptic characteristics; with a\u00a0chemical post-treatment<\/strong>\u00a0(chlorination, for example), for greater safety of preservation in the storage tanks.<\/p>\n

        The entire process is managed by an\u00a0electronic control<\/strong>\u00a0and by an instrumentation of manual or automatic command and control, depending on the complexity of the machine or plant.<\/p>\n

        Any desalinator needs a\u00a0complementary flushing system<\/strong>\u00a0(manual or automatic), useful to conduct periodic washes with fresh water, and to ensure efficiency and durability of the machine and its components.<\/p>\n

        The choice of a desalinator in standard configuration or the design and production of a specific installation are always subordinated to the capacity of which you need, the characteristics of raw water to treat and the quality of fresh water you want to obtain<\/strong>.<\/p>\n

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