Waterandwastewater's Sludge Level

MEASURE SLUDGE LEVEL
Video shows two different manual sludge level measurements. The first measurement is taken slowly, allowing water to equalize in the tube, therefore showing a reasonably accurate sludge level. The second manual measurement is taken fast, which does not allow water time to equalize in the tube, therefore a suction effect occurs that pulls the sludge with it. This gives a false reading. Therefore, the manual method is not a reliable way to measure and control sludge levels. For a direct link, go to http://tinyurl.com/yfyu6a9.

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