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Cooling Water Treatment Problems - How to Control Them

2019/4/25 9:15:52      view:

Sourcing a a water treatment service company that offers a complete range of scale and corrosion inhibitor formulations, biocides and ancillary equipment is imperative to control these problems.
Water Softeners
If the available make-up water is very hard then removal of most of the calcium, which is the principal action associated with scale formation, will reduce the tendency for scale to form. For large systems, treating all the make-up water can be too expensive and may not be required.
Base exchange water softeners contain ion exchange resins which, when in contact with water, replace calcium ions with sodium ions. The system is fully automated using very reliable control valves that automatically regenerate the softener, based either on the time in operation or volume of water treated. Where soft water is required continuously or there is a large demand, the softener should be a "duplex" design, having two exchange columns such that one is in operation while the second is being regenerated
Chemical Dosing
Control of scale and corrosion is most commonly achieved by using chemical inhibitors. To function correctly, these chemicals need to be maintained at the correct concentration in the system. However, the concentration at which they are dosed to the system has to take account of the concentration factor.
Accurate dosing of inhibitors is best achieved using a system that monitors make-up water quantity (usually from a water meter signal) and signals to a pump, the volume of chemical to add.
System Concentration Factor
Maintaining a constant system concentration factor is important for good system control; chemical treatments will have been recommended for the particular water chemistry at that concentration. At the least, variations in concentration will result in under or over concentration of treatment, which could make it ineffective or give an undesirable interaction with other treatment chemicals.
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