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

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

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?

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1 Answer

  1. 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

    1 Comment

    1. The chloride of system H is not swing, the  concentration is about 10,000 ppm often. We know the  chloride maybe a matter, and we plan to lower. Do you suggest the suitable chloride concentration for ​activated ​sludge system ?