Method for improving dewatering property of remained active sludge of sewage treatment plant
A technology for residual activity and sludge dewatering, which is applied in the oxidation treatment of sludge, water/sludge/sewage treatment, sludge treatment, etc., and can solve the problems of large dosage of inorganic coagulants and high price of polyacrylamide. , to achieve the effect of reducing transportation costs, reducing the volume of mud cakes, and high efficiency
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[0023] A method for improving the dehydration performance of excess activated sludge in a sewage treatment plant, characterized in that: the strong oxidation of peracetic acid and the flocculation of cationic polyacrylamide are used to reduce the water content of the treated mud cake and reduce the sludge volume, including the following steps:
[0024] (1) Pass the remaining activated sludge to be treated through a 40-mesh sieve to remove large suspended particles, let it stand for 20-30 minutes, and discard the supernatant; the above-mentioned remaining activated sludge to be treated is taken from the reclaimed water treatment station of Huaqiao University Xiamen Campus secondary settling tank;
[0025] (2) in the material of step (1) gained, add the peracetic acid solution of 103.5mg / gMLSS, with the stirring reaction 30min of the rotating speed of 200r / min with six mixers;
[0026] (3) Add 20-70mg / L (preferably 40-50mg / L) of 0.1% cationic polyacrylamide aqueous solution to ...
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