Water quality - Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation (ISO 8192:2007)English version of DIN EN ISO 8192:2007-05
This International Standard specifies a method for assessing the inhibitory effect of a test material on the
oxygen consumption of activated sludge microorganisms.
This method is intended to represent the conditions in biological waste—water treatment plants. It gives
information on inhibitory or stimulatory effects after a shod exposure(usually 30 min up to 1 80 min or even
more)of the test material on activated sludge microorganisms.
This method is applicable for testing waters，waste waters，pure chemicals and mixtures of chemicals.
Concerning the chemicals，the method refers to those which are soluble under the test conditions. Special
care is necessary with materials of low water solubility，high volatility and with materials abiotically consuming
or producing oxygen.