DM Plant

Demineralized water is water that has been filtered in such a way that most) the mineral and salt ions are separated. You may think of Calcium, Chloride, Sulfate, Magnesium and Sodium, for example. Demineralized water is also known as half water or deionized water. Salt ions are thus removed.Demineralization or deionization is the process of extracting mineral salts from water by means of an ion exchange process. Impurities that remain dissolved in water dissolve to form positive and negative charged particles known as ions. The ion-exchange vessel contains the ion-exchange resin of the form required by which the water is allowed to pass. Selective ions in the water are exchanged with ions or radicals loosely retained in the resin. They have a wide range of custom-built demineralization plants for industrial process water applications, with an inherent design for water conservation and cost savings.


High-purity water, which is basically free from ionic contaminants, is needed for many laboratory and industrial applications. Deionization will generate water of this good quality. The two most popular deionization forms are:
Deionization Two-Bed
Deionization of Mixed-Bed


Water flows into the column of cation, where upon all captions are substituted for ions of hydrogen. For each monovalent caution, to keep the water electrically balanced, e.g. Na+ is substituted for one hydrogen ion and for each divalent precaution, e.g. Two hydrogen ions, Ca2+, or Mg2+, are exchanged. When contemplating the exchange of anions, the same idea applies. Then the desalinized water flows into the column of anions. All the negatively modified ions are substituted for hydroxide ions this time, which then merge with the hydrogen ions to form water (H2O).


Aliments & Drinks
Plating plants
Paper & pulp industry

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DM Plant


As deionization is the procedure used to extract all dissolved salts from water. Deionization involves water flow through two ion exchange materials, so that all salt content can be extracted.


The industry has a rather interchangeable use of the words demineralization and deionization. Although it is normally best understood the term demineralization, deionization is particularly fitting.


Those reactions occur when the water moves through the ion exchange beds. Iones are separated from water by a sequence of chemical reactions. Cation resin contains surface hydrogen (H+) ions, which are converted to positive loaded ions in its regenerated form. Cation resin Hydroxide (OH) ions are found in the anion Resin, which are substituted by negative ions on its surface. The final product, H+ and OH-, form water molecules. The two exchanges.

After extracting impurities, two types of plants are typically integrated for continuous feed water supply to boilers. The following are:
Plant for demineralization (D M plant)
Osmosis plant reverse (R O plant)

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DM Plant

A chemical process is used to separate dissolved salt into raw water by the demineralizing facility. However, reverse osmosis plant uses a basic physical process to extract the dissolved salts. Different philtres are used to philtre sand before feeding raw water into these plants. There are two de aerators along with these plants that extract dissolved oxygen from feed water, as oxygen traces can react and corrode with boiler tubes.

The following is defined as complete arrangements and interior facilities for these plants.Water hardness sales are usually made of chlorine, coal, bi-carbonates, sodium, potassium, iron, calcium, and magnesium silicones and phosphates. There are three kinds of resin in DM plant used in the method of boiler feed treatment –
Exchange of cation resin
Resin for anion exchange
Resin of Mixed Bed

Resins are organic substances (usually high molecular-weight polymers) used for reacting and chemical processing with salts. As the name means, cation resin is exchanged, cation is modified and anion exchange resins replaced with hard-water dissolved salts.

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Further high purity of water can be obtained by Mixed Bed Deionisers, which are engineered to produce high purity of treated water. They can be used as polishing units after two beds of DM Plant to obtain high purity water. Mixed Bed Deionisers are single-column units, filled with strongly acidic cation and strongly basic anion exchange resins mixed together.

There are four distinct phases in the activity of Deionisers
Regeneration of the


During the duty period, the water enters the vessel and passes through the resin bed of the respective exchanger.


The bed is washed back after the resins are drained. Backwashing is carried out by a uniform upstream flow of water through the resin bed. The backwash phase extends the resin bed that releases any trapped particles and prevents the channelling in the resin column if it happens during the service cycle.


When ion exchange resins lose all the exchangeable ions, they require regeneration to restore them to hydrogen or hydroxyl form depending on whether they are cation or anion resins. To do this, 4-5% concentrated solution of hydrochloric acid is used for cation resin and 4-5% concentrated solution of caustic soda for anion resin.


The final stage of regeneration is the rinse of excess regenerant resins.


Compact the flow template
Total assembly with backwashing and regeneration equipment
Counter-current design for increased performance and lower operating costs
Simple to install and run
Effective architecture to accommodate a range of requirements
Flexible layout to match the 'location' conditions
Clean of Rust
Low initial costs
Low maintenance job
Easier delivery and collection methods
Suitable for a little less TDS water
Using less energy
Pleasant Consumer

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