Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1979-12-04
1981-07-28
Wyse, Thomas G.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210759, 210903, C02F 172
Patent
active
042809142
ABSTRACT:
In the detoxification of waste waters containing nitrite ions by means of hydrogen peroxide the addition of hydrogen peroxide is automatically controllable by adding the hydrogen peroxide continuously or in portions with continuous measurement of the pH and stopping the addition when no further reduction of the pH is caused by it. By control of the hydrogen peroxide addition through the change of the pH it is guaranteed that sufficient hydrogen peroxide is added to reach a complete detoxification of the waste water while on the other hand there is not wasted hydrogen peroxide unnecessarily.
Fischer Joachim
Knorre Helmut
Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
Wyse Thomas G.
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