Process for automatically controlling the detoxification of wast

Details Process for automatically controlling the detoxification of wast Process for automatically controlling the detoxification of wast

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.

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