What is OBR in DM plant?

What is OBR in DM plant?

OBR = output between regenerations. Q. We are operating DM plant of 2 streams of capacity 2740 m3 OBR (137 m3/hr * 20 hrs).

What are the basic components of a demineralization plant?

Demineralization – The Process of removing minerals and salts from water using ion exchange process. Demineralized water mostly contains of Calcium, Magnesium, Sodium, Chloride. The demineralized water is also called deionised water or Demin water.

How does a demineralization plant work?

Demineralized Water System finds wide application in the field of steam, power, process, and cooling. Raw Water is passed via two small polystyrene bead filled (ion exchange resins) beds. While the cations get exchanged with hydrogen ions in first bed, the anions are exchanged with hydroxyl ions, in the second one.

What is the purpose of the demineralization process?

Demineralization of water is the removal of essentially all inorganic salts by ion exchange. In this process, strong acid cation resin in the hydrogen form converts dissolved salts into their corresponding acids, and strong base anion resin in the hydroxide form removes these acids.

What is mix bed?

Mixed bed resins or mixed bed ion exchange resins are mainly used in the water purification industry for polishing process water to achieve demineralized water quality (such as after a reverse osmosis system). Mixed bed as the name states consists of strong acid cation exchange and strong base anion exchange resin.

What is the pH of demineralised water?

The pH of demineralized water should be approximately 10. The elevatd pH is because the leakage of ions leaving the demineralizer will be in the form of NaOH. Na from the cation unit and OH from the anion unit. The OH will cause the elevated pH.

How is water demineralized?

Demineralized water is made by passing the water through specially manufactured resins. The resin is designed to exchange ions in the water so that the final result leaves you with the chemical composition of pure water.

What is the difference between remineralization and demineralization?

Demineralization is the process of removing minerals ions from HA crystals of hard tissues, for example, enamel, dentin, cementum, and bone. Restoring these mineral ions again to the HA crystals is called remineralization.

What is difference between TDS and pH?

There is not any direct relation between pH and TDS. Because pH is the logarithmic amount of H(+ve) ions in water. On the other hands, TDS is the total dissolved solids in the water.

Where does demineralized water need to be processed?

Small-scale technologies, though, such as stirling dishes or small solar tower concepts, use air/gas as the HTF. Demineralized water should be processed on-site from raw water in a specific water treatment plant.

When to use demineralized water for cooling towers?

In case where the total dissolved solids (TDS) of the raw water is very high, demineralized (DM) water is used for the cooling tower make–up water. In one variation, DM water is used as the make–up water for the urea plant direct cooling tower (CT).

When to use demineralized water for boiler feed?

Demineralization (DM) Demineralized water is required particularly for boiler feed purposes. In case where the total dissolved solids (TDS) of the raw water is very high, demineralized (DM) water is used for the cooling tower make–up water. In one variation, DM water is used as the make–up water for the urea plant direct cooling tower (CT).

How is DM water used in the urea plant?

In one variation, DM water is used as the make–up water for the urea plant direct cooling tower (CT). This is because a small quantity of the circulating water is recycled in the process. DM plant consists of cation and anion exchange units followed by a mixed bed unit.

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