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It is essential that the resins are filled into the correct vessels. Preliminary Vessel Inspection site rencontre pour ado nord If available check plant documentation and vessel drawings. If not available, record technical data of the vessels including vessel diameter, cylindrical shell height, type of distributor system, type and number of Femme cherche homme tunisien pour mariage, density of nozzles, height of collector system, position of sight glasses etc.
When an old resin bed is being replaced it is essential that, before the new resin is installed, the unit is first inspected to ensure all the old resin and any debris has been removed completely. Removal of debris, any old underbedding, and old resin can be done by the siphoning technique. Also important is that the vessel internals have been checked to ensure there are no signs of damage, blockage, or excessive movement in the distribution and collection systems.
It is recommended — where possible — to check the pressure drop of the empty filter at the service flow rate. One simple means of transferring resin is through the use of eduction systems. Where this is not available fill, regenerate and commission cation vessel first in order to produce decationized water for the filling and commissioning of the anion vessel. Use of raw water can result in magnesium hydroxide precipitation in contact with caustic or OH- form anion resin.
The resin may be stored in the plastic bag in which it was shipped, provided it is kept tightly sealed or transferred to a glass container. Although freezing does no harm, repeated freezing and thawing should be avoided. The slimes arising from this proliferation may choke the resin bed and cause flow, quality and capacity problems.
Backwash all resin beds to remove debris and suspended contaminants. Keep the resin in the exhausted rather than regenerated form. If necessary, convert the resin to the completely exhausted form, using dilute solutions of acid for the anion resin, caustic soda for strongly acidic resins. Rinse all resins with clean water. If organic contamination is suspected, clean anion resins with alkaline brine. If required, all the necessary spare parts can be provided by Lenntech.
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