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METTLER TOLEDO Thornton is a leading supplier for on-line pure water treatment measurements for the pharmaceutical, microelectronics and steam and power generation industries. Thornton also serves these and related industries through system fabricators who incorporate high quality instrumentation into their pure water treatment system designs.
The new edition of our Power Industry brochure addresses all areas of power plants where precise water analytics are needed.
Get an overview of METTLER TOLEDO Thornton sensors and analyzers to keep power plant water running efficiently.
With very hard water conditions it is advantageous to reduce the hardness concentration before reverse osmosis or deionization to prevent scaling or difficult regeneration in these processes. Calcium, magnesium and other hardness ions are exchanged for sodium in a cation resin bed. The resin is regenerated with brine with its concentration controlled via a high range conductivity measurement.
Deionization by ion exchange enables thorough removal of ionic contaminants. Cation resins remove positive ions and are frequently monitored by sodium measurement to detect the first breakthrough when the cation bed is depleted. Anion resins remove negative ions and are frequently monitored by silica or conductivity for breakthrough. Separate cation and anion beds are efficiently regenerated by acid and caustic which can have their dilution controlled by high range conductivity measurements with direct concentration readout. Mixed cation/anion bed exchangers are capable of removing the last traces of ions and are often monitored by sodium, silica and conductivity.
CEDI is an electrically driven purification process combining ion exchange resin and ion-selective membranes to provide similar performance to mixed bed deionization but without chemical regeneration. Instead, the resin is electrically regenerated. Conductivity and flow measurements monitor system performance and ensure water quality.
Total Organic Carbon (TOC) measurement confirms organics reduction. Ozone measurement ensures that all ozone is decomposed.