Analyzers, in-situ sensorsand samplers

Liquid analysis – Water & Wastewater

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Drinking water treatment The treated water is pressurized or pumped into an elevated tank. Depending on the conditions, chlorine is injected into the pipe as a disinfectant and the water is then fed into the drinking water system. The water quality undergoes a thorough analysis at the waterworks outlet. What is measured? • The amount of free available chlorine reflects the disinfection quality of the water > CM44, CCS51D • Physical variables such as pH and turbidity are measured to ensure that water quality complies with legal regulations > CM44 • The amount of iron and aluminum in the water also provides information on compliance with legal regulations > CA80FE, CA80AL • Water hardness is measured to classify drinking water > CA80HA

Ultrapure water treatment Ionic salts are removed from the treated water. The water is softened and gas is removed. This results in ultrapure water for industrial processes or boiler feedwater for power stations. As they have already been treated, the return water and condensate are directed back into the water system. What is measured? • At high pressures and temperatures, residual oxygen can cause excessive corrosion and thus has to be monitored > CM44 • The difference in conductivity provides information about the operation of the ion exchanger and the pH value > CM44 • Ammonia is used as a corrosion inhibitor. It is measured to ensure optimum dosing > CA80AM • Silica can cause buildup on the turbine blades. For this reason, it is very important to monitor the amount of silicate in power plants > CA80SI • Sodium content detects dissolved impurities and is an early indication of condenser leaks or malfunction of ion exchangers > CA76NA

Iron, nitrate, SAC, aluminum, free and bound chlorine

Ammonium, ammonia, silica, sodium

Ion exchanger

Storage

Pressure tank (pressure increase)

Degassing

Disinfection

Drinking water

Ultrapure water

Recirculation of process water for reprocessing

Drinking water treatment

Ultrapure water treatment