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Filtration through activated charcoal is and continues to be the final process for drinking water treatment also in the most advanced fine filter water-works. Even the residues of medicaments and hormones can be effectively removed from the water in this way. The process runs under excess pressure in four closed filter vessels switched in parallel. This last step on the way to clean drinking water is also subject to specific requirements with which the valves in the plant must comply in a practical way.
800 Nm³/h startup air release, 2.800 Nm³/h air intake during discharge and 10 Nm³/h operational air release: This range must be covered by a valve solution at solely 0.12 bar operating pressure. In the closed system of the activated charcoal filtration this can be achieved by a combination of two proven Mankenberg components.
For bleeding in the startup and operation phase, one EB 1.74 DN 100 per each of the four activated charcoal vessels has been installed. The vacuum breaker VV 34 DN 200 ensures fast air intake during the discharge phase in this section. Just like for any other Mankenberg solution, different types of connections offer many possibilities for individual planning or adaptation to existing systems.
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