Online evaluation method for sludge dewatering performance
A sludge dehydration and evaluation method technology, applied in water/sludge/sewage treatment, sludge treatment, sludge oxidation treatment, etc., can solve the problems of cumbersome testing, difficult online testing, and limited application, and achieve real-time online Evaluate, facilitate the effect of standardization
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Embodiment 1
[0047] The remaining activated sludge was taken from an anaerobic / aerobic biological reaction process with a daily water treatment capacity of 1 million tons in a reclaimed water plant in Beijing, and the sludge concentration was 18g / L. Add different doses of FeCl to the sludge 3 coagulant to obtain sludge with different dewatering properties. An electrochemical impedance meter connected to a conductivity electrode is used to perform a frequency sweep test on the sludge, and the test process is consistent with that described in the specific embodiment. Income d s / f c The relationship with the traditional indicators CST and SRF for evaluating sludge dewatering performance is shown in the attached Figure 4 shown. attached by Figure 4 It can be seen that d s / f c There is a significant linear relationship with the traditional off-line indicators CST and SRF that feedback the sludge dewatering performance, and the linear fitting R 2 are all greater than 0.94, and the p-...
Embodiment 2
[0049] Get the same remaining activated sludge as the original sludge in Example 1 for conditioning, and the difference from Example 1 is that Example 2 adopts the conditioning method of oxidative cracking-reflocculation, that is, potassium permanganate with different doses The sludge was oxidized and decomposed, and then the oxidation was terminated with ferrous chloride with a molar ratio of 3 times potassium permanganate, and ferric iron was generated in situ for flocculation. The sludge with different dosages of conditioning agents was subjected to a frequency sweep test, and the test process was consistent with that described in the specific embodiment. Income d s / f c The relationship with the traditional indicators CST and SRF for evaluating sludge dewatering performance is shown in the attached Figure 5 shown. attached by Figure 5 It can be seen that d s / f c There is also a significant linear relationship with the traditional off-line indicators CST and SRF th...
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