ProMinent DULCODOS Ammonia, Руководство по эксплуатации, Страница: 16 / 52

7 Functional description
The DULCODOS ® Ammonia system is used for the gas-tight
transfer and dilution to usual metering concentrations and then
automatic metering into the feed water.
The dosing tank (12) needs to be filled with de-ionised water to
batch a diluted usable ammonia water solution. The transfer pump
(4) semi-automatically fills concentrated ammonia water solution
(max. 25%) from the supply drum (1) into a metering vessel (9). An
appropriate amount of this concentrated solution from this metering
vessel needs to be left in the dosing tank to obtain a final concen‐
tration of between 0.1% ... 2.5%.
The manual stirrer (10) mixes the solution until it is homogeneous.
A chemical vapour lock (adsorber) (7) is fitted on the metering
vessel to prevent ammonia vapours from escaping into the envi‐
ronment.
The metering pump (5) meters the ready-to-use ammonia solution
from the dosing tank at the corresponding point of injection (6).
Metering can be provided on-demand using external control of the
metering pump.
Optional fault indicating relays on the pumps can report faults on a
control panel.
Functional description
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