The nitration reaction of high chloride (~10,000 ppm) activated sludge system

Question

Dear all,
The nitration reaction of activated sludge system H (chloride~10,000 ppm) is not stable (data as attach files), we have to pump the L system activated sludge to promote the nitration reaction ability once in a while. we want to know the difference of system H and L, and to review the data of NH3-N reduction rate,
a.The ammonia oxidation bacteria (AOB) should be in the activated sludge system H.
b.The NO2-N do not react to NO3-N completely in the system H, while the system L is little NO2-N remain  .
c.Some impurities, maybe the chloride, sulfide or others ( we do not know) to injure or inhibit the microorganism NOB or AOB of system H.
The questions list below and ask for dear all:
1.Anyone have the similar experience ?
2.The activated sludge of the H system come from L system, What is the impurities could effect the microorganism NOB or AOB, and make the different for nitration reaction rate?
3.Any suggests for us to improve?

Sean Roop · Answer

Do you have a constant Salinity feeding the system?  If not that is a major problem.  Notification is just your first indication that things are getting ready to go to hell in a handbasket. What you have is a swing salinity that causes osmotic pressure inside the carbonaceous bacterial cells and inhibits the degradation of nitrogen compounds via into soma and nitrobacteria (nitrifiers).  I have seen this across well and gas when they put in a scrubber mandate for FCCUs.  You can aluminate this by locating the high salinity (chloride) stream, segregating and % of flow feed to the main feed.  Keep your conductivity constant.  You will probably see float come up and down on the clarifiers as well. Thanks Sean

The nitration reaction of high chloride (~10,000 ppm) activated sludge system

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