eutech-instruments ecoscan do 6 do meter Manuel D’Utilisation

Page de 76
Instruction Manual 
DO 6 
 
 
67
 
In boiler water application, presence of oxygen in the water will increase 
corrosion and helps build up boiler scale that inhibits heat transfer.  In such 
instance it is critical to keep DO concentration to a minimum.   
Some pollutants such as acid mine drainage produce direct chemical demands 
on oxygen in the water.  DO is consumed in the oxidation-reduction reactions of 
introduced chemical compounds such as nitrate (NO
3
1-
) and ammonia (NH
4
1+
), 
sulfate (SO
4
2-
), and sulfite (SO
3
2-
) and ferrous (Fe
2
+
) and ferric (Fe
3
+
) ions.    
These are important consideration for water and wastewater treatment industry.