The turbidity value in the aeration tank is inaccurate
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The E+h turbidimeter is used in aeration tanks. It’s much worse compared to the laboratory results. The laboratory results are 6000-7000 ； The reading of the E+H instrument is just over 1000, and the bubble compensation value of the instrument has been set to its maximum
The only option is to recalibrate the turbidimeter.
Isn’t the turbidimeter calibrated at the factory? There’s no way to recalibrate it, right?
Due to the presence of fine bubbles generated by aeration, it is difficult to accurately measure the turbidity in conventional aeration tanks. In practical engineering applications, turbidity is not generally used as a parameter; instead, indicators such as SV30 are employed. Although the bubble compensation is set to maximum (the HACH meter reading is too low; could it be that the compensation is too high?) The turbidity should be higher when there are bubbles), but the impact may not necessarily be eliminated. Also, are the sampling points for the two of you the same? It is recommended to take samples from the same location and try again.