C, H, N, D, P Class Waste Water Treatment Plants

[cremesti]

C = BOD removal
H = ????
N = Nitrification
D = Denitrification
P = Phosphorus removal

Any one know what the H stands for in European waste water pollutant reduction standards???

thanks

rami

 

[micalbrch]

Can it be Hydrogen as an abbreviation for the pH value which is the negative logarithmic value of the Hydrogen ion (H+) concentration? H = Neutralization?

 

[cremesti]

could be, might also be Hydrocarbons for oil/grease emulsion removal

but I woule like to know for sure. I cannot find the EU standard that is mentionning these classes

rami

 

[bimr]

Class +H plants indicate the elimination of carbon and nitrogen as well as the disinfection of the water in order to remove pathogens. While class +H is mandatory when the reclaimed water is to be discharged into water reserves, class C requirements are usually sufficient for small wastewater treatment plants used for domestic purposes.

http://www.research-in-germany.de/8...lants-produce-more-than-just-clean-water.html