If you want to know the ...
Published by Walter Cao, Unemployed - seeking working - Job Seeker
If you want to know the reason, you must provide a lots of information. To maintain the concentration of MLSS, reduce the volume of waste sludge at the moment.
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The WAS is critical either set by a timer or a MLSS probe or by level control. Check this first and reduce slowly over say a week and MLSS should increase. More info is required but check food to mass ratio, and sludge age. I assume that the returned sludge is from final settlement tanks and a portion of this is wasted (WAS)..check level of hydrostats so that water is not being returned...
Published by Raymond Dove