Terminology for softening and desalination of industrial water
Softened water removes most or all of the calcium and magnesium ions.
Demineralized water of desalted water is a general term for finished water after removing impurities in water such as suspended solids, inorganic precipitation and anions through different water treatment process systems.
High-purity water, ultra-high purity water mainly refers to water whose conductivity is less than 0.1us/cm, pH value is 6.8-7.0 and other impurities and bacteria are removed at 250 C.
In addition to desilication of silicon, silica removal uses ion exchange or other methods to remove silicon dioxide from water.
The process of removing or reducing bicarbonate ions in water by chemical or ion exchange method.
Acid cleaning is a process of removing water-insoluble sediments from equipment or ion exchangers.
The lime slurry lime is digested and mixed with water to form a paste slurry.
Lime milk of lime lime slurry is a turbid liquid diluted with water.
Resin contaminated resin fouling resin surface and pore accumulated dirt or resin exchange group adsorbed irreversible ion exchange pollutants.
Resin degradation resin degradation anion resin is affected by oxidant and high temperature. Its quaternary amines gradually change to tertiary, secondary and primary amines, which weakens its alkalinity and shows a decrease in the number of strong base exchange groups.
Ion exchanger is a material that can exchange ions with water. There are ion exchange resins, sulfonated coal and so on.
Ion exchange resin is an ion exchange resin produced by the polymerization of crosslinking agents of macromolecule compounds.
The main exchange groups of weak-base exchange resin are primary, secondary and tertiary amine anion exchange resins.
The strong-base anion exchange resin is an anion exchange resin with quaternary amines as its main exchange group.
The main exchange groups of weak-acid exchange resin are as-COOH or phenolic cation exchange resins.
Storng-acid cation exchange resin is a strong acidic cation exchange resin whose main exchange group is sulfonic acid group (-SO3H).
The gel type ion exchange resin gel - type ion exange resin resin has only chemical structural pores. When the resin is immersed in water, the pores of the resin particles are displayed in the process of swelling.
Macroporous ion exchange resin macro-reticular type on exchange resin macroporous resin has discontinuous and discrete holes. It does not show swelling in aqueous solution. MR for short.
Sulfonated coal fine bituminous coal is treated with fuming sulfuric acid to obtain ion exchanger.
The post-treatment post-treatment system, which is connected behind the desalination system, is usually composed of filter, precision filter, ultraviolet sterilization and reverse osmosis device. It is mostly installed near the water point.
Regemeration ion exchanger is regenerated to restore its prototype exchange capacity and process.
Regeneration liquid displacement rinse displocement ion exchanger is a step in the regeneration process. When the ion exchanger is regenerated, after stopping injecting regenerated liquid, the process of extruding the local liquid in the ion exchanger is continued to inject water (the flow rate of water is the same as that of regenerated liquid).
Two sodium ion exchangers are connected in series with two sodium ion exchangers.
The ion exchange process of co-current regeneration regeneration solution and treatment water flowing through the ion exchange layer is opposite to that of treatment water flowing through the ion exchange layer. SS for short.
The flow direction of counter-current regeneration regeneration regeneration liquid through ion exchange layer is opposite to that of treatment water through ion exchange layer. C.C.R.
Up-flow regeneration is one of the convective regeneration forms. During regeneration, the regenerated liquid flows up and down through the ion exchanger layer, while the treated water flows up and down through the ion exchanger layer during operation. C.C.R.
Floating bed fluidized bed convection regeneration ion exchanger is one of the forms. When regenerated, the regenerated liquid flows from top to bottom through the ion exchange layer, and the treated water flows from bottom to top through the compacted suspended ion exchange layer. The floating bed world situation NS for short.
Mixed ion exchanger Mixed bed ion exchange resins, both positive and negative, are sufficiently mixed in an ion exchanger, and simultaneously carry out both positive and anion exchange equipment. Mixed bed for short.
Air hold down C.C.C. and air blanket C.C.R. In the process of counter-current regeneration, the upper space is filled with compressed air to maintain the stability of the bed.
Water hold down C.C.R. Water blanket C.C.R. In the process of countercurrent regeneration, the upper space of exchanger layer uses pressure water to maintain the stable bed bottom.
No top pressure countercurrent regeneration atmospheric press bed C.C.R. In the process of countercurrent regeneration, there is no top pressure measure in the upper space of the exchanger layer (atmospheric ventilation). Intermediate drainage devices with low flow velocity and small resistance of regeneration liquid or pressure grease layer are taken to maintain the stable and undisturbed bed.
When ion exchange bed expansion is backwashed, the percentage of expansion of exchanger layer occurs when water flows backward through the exchanger layer.
The mobile bed moving bed ion exchange resin is a periodically flowing ion exchange device between exchanger, regenerator and cleaning tower.
Regenerant consumption chemical consumption, regenerant consumption recovery of failed ion exchange