Waterandwastewater's Sludge Level

Nov. 18, 2009
See two different manual sludge level measurements
MEASURE SLUDGE LEVELVideo 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.